{"product_id":"🔩-expansion-screw-petal-nuts-strong-secure-fastening","title":"🔩 Expansion Screw Petal Nuts – Strong \u0026 Secure Fastening","description":"\n\u003cstyle\u003e\n\/* Petal Expansion Screws — Premium DTC Shopify V4.1 *\/\n.pnp26{--pnp-bg:#f4f8fa;--pnp-paper:#fff;--pnp-ink:#243c49;--pnp-body:#4e6672;--pnp-line:#d7e5eb;--pnp-blue:#216c8c;--pnp-ice:#e7f2f7;--pnp-warm:#b47742;display:block;box-sizing:border-box;container-type:inline-size;isolation:isolate;max-width:880px;width:100%;min-width:0;margin:0 auto;padding:11px;overflow:hidden;background:var(--pnp-bg);color:var(--pnp-ink)}\n.pnp26 *,.pnp26 *::before,.pnp26 *::after{box-sizing:border-box;min-width:0}\n.pnp26 h2,.pnp26 h3,.pnp26 p,.pnp26 dl,.pnp26 dt,.pnp26 dd,.pnp26 figure{margin:0;max-width:100%;overflow-wrap:anywhere}\n.pnp26 img{display:block;width:100%;max-width:100%;height:auto;object-fit:contain}\n.pnp26 a{color:inherit}\n.pnp26 .pn-stack{display:grid;gap:15px;min-width:0}\n.pnp26 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rgba(10,32,47,.28)}\n}\n@media (prefers-reduced-motion:reduce){\n.pnp26 .pn-grad,.pnp26 .pn-moving{animation:none!important}\n.pnp26 .pn-card,.pnp26 .pn-mini,.pnp26 .pn-button{transition:none!important}\n}\n\u003c\/style\u003e\n\n\u003csection class=\"pnp26\" id=\"pnp26-petal-nuts\" aria-label=\"Petal expansion screws and metal anchor fasteners product details\"\u003e\n\u003cdiv class=\"pn-stack\"\u003e\n\n\u003c!-- 01 \/ HERO --\u003e\n\u003cdiv class=\"pn-card pn-hero\"\u003e\n\u003cspan class=\"pn-kicker\"\u003eTHE SMALL FASTENER WITH A SMARTER GRIP\u003c\/span\u003e\n\u003ch2 class=\"pn-h1\"\u003eSmall Screw.\u003cbr\u003e\u003cspan class=\"pn-grad\"\u003eA More Secure Hold.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eA loose connection can make a great DIY project feel unfinished. These zinc-plated petal expansion anchors open behind suitable thin panels as you tighten—creating a wider gripping surface where an ordinary screw alone may struggle.\u003c\/p\u003e\n\u003cdiv class=\"pn-tags\"\u003e\n\u003cspan class=\"pn-tag\"\u003e🔩 Expanding Petal Grip\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e✨ Zinc-Plated Steel\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e📦 20 Pieces \/ Pack\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"pn-photo\"\u003e\n\u003cimg src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/spp_shopify20260727214715_079dbac301056306b62ddf4181f1d507_25e5c45e-7ab7-4556-b7a9-23fe33b1fb20.jpg?v=1787222387\u0026amp;width=1946\" alt=\"Silver petal expansion anchors beside a screw installed through a metal panel with petals opened behind it\" loading=\"eager\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 02 \/ MARQUEE --\u003e\n\u003cdiv class=\"pn-marquee\" aria-label=\"Product advantages\"\u003e\n\u003cdiv class=\"pn-moving\" aria-hidden=\"true\"\u003e\n\u003cdiv class=\"pn-moving-unit\"\u003e\n\u003cspan\u003eINSERT\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003eTIGHTEN\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003ePETALS EXPAND\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003eGET A FIRMER GRIP\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003e20-PIECE PACK\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-moving-unit\"\u003e\n\u003cspan\u003eINSERT\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003eTIGHTEN\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003ePETALS EXPAND\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003eGET A FIRMER GRIP\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003cspan\u003e20-PIECE PACK\u003c\/span\u003e\u003cb\u003e◆\u003c\/b\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- 03 \/ PAIN --\u003e\n\u003cdiv class=\"pn-card pn-ice\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e01 \/ THE DIFFERENCE IS BEHIND THE PANEL\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eA Screw Can Only Do So Much. \u003cspan class=\"pn-grad\"\u003eGive It a Better Anchor.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eOn suitable thin or hollow-backed panels, the material around a hole may not give a regular screw enough purchase. A petal expansion anchor is designed to open on the other side, adding a larger contact area for a more confident fastening.\u003c\/p\u003e\n\u003cdiv class=\"pn-callout\"\u003eThe smart part is what you don't see: the metal petals spreading behind the panel.\u003c\/div\u003e\n\u003cfigure class=\"pn-photo\"\u003e\n\u003cimg src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/spp_shopify20260727214715_3100f68f8ed3c80b5d95332a06bc76c4_fb90548a-f616-4ed6-a9cb-24049d315c6b.jpg?v=1787222387\u0026amp;width=1946\" alt=\"Detailed comparison of collapsed petal screw sleeve and opened anchor behind metal sheet\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 04 \/ MECHANISM GIF --\u003e\n\u003cdiv class=\"pn-card pn-silver\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e02 \/ WATCH THE GRIP TAKE SHAPE\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eTighten the Screw. \u003cspan class=\"pn-grad\"\u003eSee the Petals Open.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eAs the screw is tightened, the metal sleeve compresses and its slotted sections fold outward. That expansion creates the signature petal-shaped anchor behind the mounting surface.\u003c\/p\u003e\n\u003cdiv class=\"pn-tags\"\u003e\n\u003cspan class=\"pn-tag\"\u003e① Insert the Anchor\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e② Turn the Screw\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e③ Expand Behind the Panel\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"pn-photo pn-photo--gif\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/9784\/0893\/files\/spp_shopify20260727214702_c953646e77de28190a2debcd096e90cb.gif?v=1785160027\" alt=\"Original animation showing the metal petal nut expanding as its screw is tightened\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 05 \/ INSTALL --\u003e\n\u003cdiv class=\"pn-card pn-ice\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e03 \/ AN INSTALLATION THAT MAKES SENSE\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eDrill. Insert. \u003cspan class=\"pn-grad\"\u003eTighten.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eThe mechanism is straightforward, making these anchors useful for prepared DIY repairs and panel-fastening jobs. Use the drill-hole size matched to your selected version.\u003c\/p\u003e\n\u003cdiv class=\"pn-steps\"\u003e\n\u003cdiv class=\"pn-step\"\u003e\n\u003cspan class=\"pn-number\"\u003e01\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePrepare a correctly sized hole\u003c\/strong\u003e\u003cspan\u003eUse the recommended bit diameter for the size you ordered.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-step\"\u003e\n\u003cspan class=\"pn-number\"\u003e02\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInsert the petal anchor\u003c\/strong\u003e\u003cspan\u003eSeat the sleeve through the panel with the flange resting against the surface.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-step\"\u003e\n\u003cspan class=\"pn-number\"\u003e03\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTighten to set the grip\u003c\/strong\u003e\u003cspan\u003eTurn the screw to expand the metal petals behind the panel.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-step\"\u003e\n\u003cspan class=\"pn-number\"\u003e04\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFinish your connection\u003c\/strong\u003e\u003cspan\u003eCheck that the fastening is seated and firmly secured for its intended use.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"pn-photo\"\u003e\n\u003cimg src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/spp_shopify20260727214715_055cc63696cda4fac6bdb4e1c7efda21_50e616ab-f20b-4d3c-8a09-fc692f9c3029.jpg?v=1787222387\u0026amp;width=1946\" alt=\"Four photographs showing a drilled opening, anchor placement and petal expansion behind a metal panel\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 06 \/ STEEL --\u003e\n\u003cdiv class=\"pn-card\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e04 \/ BUILT WITH PRACTICAL MATERIALS\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eCarbon Steel Strength. \u003cspan class=\"pn-grad\"\u003eClean Zinc-Plated Finish.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eMade from carbon steel with a silver zinc-plated surface, these metal expansion nuts combine a solid fastener construction with a protective finish designed to help resist everyday surface corrosion.\u003c\/p\u003e\n\u003cdiv class=\"pn-tags\"\u003e\n\u003cspan class=\"pn-tag\"\u003e⚙️ Carbon Steel\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e✦ Zinc-Plated Surface\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e🔩 Cross-Head Screw\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"pn-photo\"\u003e\n\u003cimg src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/spp_shopify20260727214716_e54debcf8b786a29afaeec1419c96649_34e1ca27-c9a0-43f5-8d00-250b5fd436b9.jpg?v=1787222387\u0026amp;width=1946\" alt=\"Multiple silver zinc-plated petal expansion screw anchors spread out on a white background\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 07 \/ USE CASE --\u003e\n\u003cdiv class=\"pn-card pn-silver\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e05 \/ SMALL HARDWARE, MANY PRACTICAL JOBS\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eFor the Fixes and Projects \u003cspan class=\"pn-grad\"\u003eAround Your Space.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eUse petal expansion fasteners for suitable thin-panel connections in furniture, brackets, fixtures, and DIY assemblies. The anchor works by gripping behind the panel—not by simply cutting threads into the surface.\u003c\/p\u003e\n\u003cdiv class=\"pn-uses\"\u003e\n\u003cdiv class=\"pn-use\"\u003e🪛 Furniture \u0026amp; Cabinet Projects\u003c\/div\u003e\n\u003cdiv class=\"pn-use\"\u003e🧰 Thin-Panel Bracket Fixing\u003c\/div\u003e\n\u003cdiv class=\"pn-use\"\u003e🏠 Repairs \u0026amp; Home DIY\u003c\/div\u003e\n\u003cdiv class=\"pn-use\"\u003e⚙️ Suitable Sheet-Material Assemblies\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"pn-photo\"\u003e\n\u003cimg src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/spp_shopify20260727214715_702d170efec106fdb70b04d4391187a2_506620ac-5bd1-469e-a968-0daccd5e41f0.jpg?v=1787222387\u0026amp;width=1946\" alt=\"Technician fastening a fixture panel with petal expansion screws in a repair setting\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 08 \/ HANDS-ON --\u003e\n\u003cdiv class=\"pn-card pn-ice\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e06 \/ PRACTICAL TOOL COMPATIBILITY\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eFamiliar Tools. \u003cspan class=\"pn-grad\"\u003eA Smarter Fastening Method.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eThe pictured cross-head design works with an appropriately fitting screwdriver bit, while compatible powered tools can help speed up repetitive assembly. A neat way to add the expanding-anchor principle to your toolbox.\u003c\/p\u003e\n\u003cdiv class=\"pn-callout\"\u003eNo elaborate new fastening system—just the correct hole, a suitable driver and the expansion anchor.\u003c\/div\u003e\n\u003cfigure class=\"pn-photo\"\u003e\n\u003cimg src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/spp_shopify20260727214715_ca0dd16918a6f7e22d49e116af521f04_4f2dbc32-6c75-4922-bfa9-0fca957ef73d.jpg?v=1787222387\u0026amp;width=1946\" alt=\"Close-up of driver bit tightening a petal expansion bolt during a thin panel installation\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 09 \/ SIZE CHOICES --\u003e\n\u003cdiv class=\"pn-card\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e07 \/ FIND THE RIGHT SIZE FOR THE JOB\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eFour Useful Sizes. \u003cspan class=\"pn-grad\"\u003eOne Smart Expansion Design.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eChoose the thread size and length that matches your project. The seller supplies four options, with a different recommended hole diameter for M4, M5 and M6. Each size comes in a pack of 20.\u003c\/p\u003e\n\n\u003cdiv class=\"pn-sizes\"\u003e\n\u003cdiv class=\"pn-size\"\u003e\n\u003cimg class=\"pn-size-img\" src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/ChatGPT_Image_2026_8_20_21_31_32.jpg?v=1787277579\u0026amp;width=1946\" alt=\"M4 by 20 mm petal expansion nut dimension diagram and 8 mm recommended drill size\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003cdiv class=\"pn-size-info\"\u003e\n\u003cdiv class=\"pn-size-header\"\u003e\n\u003cstrong\u003eM4 × 20 mm\u003c\/strong\u003e\u003cb\u003e20 PCS\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cp\u003eCompact M4 choice for suitable thin-panel installation.\u003c\/p\u003e\n\u003cdiv class=\"pn-size-data\"\u003e\n\u003cspan\u003eDrill hole: 8 mm\u003c\/span\u003e\u003cspan\u003eSleeve: 16 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pn-size\"\u003e\n\u003cimg class=\"pn-size-img\" src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/ChatGPT_Image_2026_8_20_21_31_26.jpg?v=1787277576\u0026amp;width=1946\" alt=\"M4 by 25 mm expansion nut dimension diagram with 8 mm drill hole\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003cdiv class=\"pn-size-info\"\u003e\n\u003cdiv class=\"pn-size-header\"\u003e\n\u003cstrong\u003eM4 × 25 mm\u003c\/strong\u003e\u003cb\u003e20 PCS\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cp\u003eLonger M4 thread option with the same nominal drill-hole diameter.\u003c\/p\u003e\n\u003cdiv class=\"pn-size-data\"\u003e\n\u003cspan\u003eDrill hole: 8 mm\u003c\/span\u003e\u003cspan\u003eSleeve: 20 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pn-size\"\u003e\n\u003cimg class=\"pn-size-img\" src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/ChatGPT_Image_2026_8_20_21_31_37.jpg?v=1787277580\u0026amp;width=1946\" alt=\"M5 by 25 mm petal expansion nut diagram with 10 mm outer sleeve diameter\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003cdiv class=\"pn-size-info\"\u003e\n\u003cdiv class=\"pn-size-header\"\u003e\n\u003cstrong\u003eM5 × 25 mm\u003c\/strong\u003e\u003cb\u003e20 PCS\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cp\u003eMid-size M5 thread and larger expansion sleeve.\u003c\/p\u003e\n\u003cdiv class=\"pn-size-data\"\u003e\n\u003cspan\u003eDrill hole: 10 mm\u003c\/span\u003e\u003cspan\u003eSleeve: 20 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pn-size\"\u003e\n\u003cimg class=\"pn-size-img\" src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/ChatGPT_Image_2026_8_20_21_36_22.jpg?v=1787277579\u0026amp;width=1946\" alt=\"M6 by 25 mm petal expansion nut dimensions and 12 mm recommended drill hole\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003cdiv class=\"pn-size-info\"\u003e\n\u003cdiv class=\"pn-size-header\"\u003e\n\u003cstrong\u003eM6 × 25 mm\u003c\/strong\u003e\u003cb\u003e20 PCS\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cp\u003eLarger M6 thread option with a wider expansion sleeve.\u003c\/p\u003e\n\u003cdiv class=\"pn-size-data\"\u003e\n\u003cspan\u003eDrill hole: 12 mm\u003c\/span\u003e\u003cspan\u003eSleeve: 20 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"pn-small\"\u003eThe seller's four diagrams list a reference panel thickness of 0–5 mm. Select the matching product option above before checkout; size cards here are informational only.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- 10 \/ PACK VALUE --\u003e\n\u003cdiv class=\"pn-card pn-silver\"\u003e\n\u003cspan class=\"pn-kicker\"\u003e08 \/ STOCK THE TOOLBOX\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003e20 Pieces. \u003cspan class=\"pn-grad\"\u003eReady for More Than One Fix.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eOne project rarely ends with a single screw. Keep a useful supply of matching expansion fasteners on hand for planned installations, replacements and future DIY jobs.\u003c\/p\u003e\n\u003cdiv class=\"pn-pack\"\u003e\n\u003cstrong\u003e20 PCS\u003c\/strong\u003e\n\u003cspan\u003ePer selected size pack · M4 × 20 \/ M4 × 25 \/ M5 × 25 \/ M6 × 25 mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"pn-photo\"\u003e\n\u003cimg src=\"https:\/\/bvuyomi.com\/cdn\/shop\/files\/spp_shopify20260727214715_3e25fd3e822af7f4569f3e1b8ef034dd_91cf9114-52d7-4ec2-baa9-a7ea6e4e3cbe.jpg?v=1787222387\u0026amp;width=1946\" alt=\"Collection of petal expansion anchors and screwdriver shown in home hardware installation scene\" loading=\"lazy\" decoding=\"async\"\u003e\n\u003c\/figure\u003e\n\u003c\/div\u003e\n\n\u003c!-- 11 \/ HIGHLIGHTS --\u003e\n\u003cdiv class=\"pn-card pn-ice\"\u003e\n\u003cspan class=\"pn-kicker\"\u003ePRODUCT HIGHLIGHTS\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eThe Right Details \u003cspan class=\"pn-grad\"\u003eMake a Better Connection.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cdiv class=\"pn-benefits\"\u003e\n\u003cdiv class=\"pn-mini\"\u003e\n\u003cspan class=\"pn-icon\"\u003e✳️\u003c\/span\u003e\n\u003ch3 class=\"pn-h3\"\u003eExpanding Metal Petals\u003c\/h3\u003e\n\u003cp\u003eOpen behind suitable panels to create a wider gripping area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-mini\"\u003e\n\u003cspan class=\"pn-icon\"\u003e⚙️\u003c\/span\u003e\n\u003ch3 class=\"pn-h3\"\u003eZinc-Plated Carbon Steel\u003c\/h3\u003e\n\u003cp\u003eDurable metal construction with a protective silver finish.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-mini\"\u003e\n\u003cspan class=\"pn-icon\"\u003e📦\u003c\/span\u003e\n\u003ch3 class=\"pn-h3\"\u003eFour Size Choices\u003c\/h3\u003e\n\u003cp\u003eSelect M4, M5 or M6 sizes in practical 20-piece packs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- 12 \/ SPECIFICATIONS --\u003e\n\u003cdiv class=\"pn-card\"\u003e\n\u003cspan class=\"pn-kicker\"\u003ePRODUCT SPECIFICATIONS\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eChoose with \u003cspan class=\"pn-grad\"\u003eConfidence.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cdl class=\"pn-specs\"\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003ePetal Expansion Screw Anchor \/ Expanding Metal Nut\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eExpansion Method\u003c\/dt\u003e\n\u003cdd\u003eSlotted metal sleeve expands into petals as the screw is tightened\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eCarbon steel with zinc-plated finish, as listed by the seller\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eSize Options\u003c\/dt\u003e\n\u003cdd\u003eM4 × 20 mm; M4 × 25 mm; M5 × 25 mm; M6 × 25 mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eRecommended Drill Hole\u003c\/dt\u003e\n\u003cdd\u003eM4: 8 mm; M5: 10 mm; M6: 12 mm, per original size diagrams\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eReference Panel Thickness\u003c\/dt\u003e\n\u003cdd\u003e0–5 mm shown in seller's specification images\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eSleeve Length\u003c\/dt\u003e\n\u003cdd\u003eM4 × 20: 16 mm; other listed 25 mm variants: 20 mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eFinish Color\u003c\/dt\u003e\n\u003cdd\u003eSilver \/ zinc-plated metal\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003ePackage Quantity\u003c\/dt\u003e\n\u003cdd\u003e20 pieces per selected size pack\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pn-spec\"\u003e\n\u003cdt\u003eApplication Style\u003c\/dt\u003e\n\u003cdd\u003eSuitable predrilled thin panels and accessible rear-cavity fastening arrangements\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\n\u003c\/div\u003e\n\n\u003c!-- 13 \/ FAQ --\u003e\n\u003cdiv class=\"pn-card pn-ice\"\u003e\n\u003cspan class=\"pn-kicker\"\u003eQUESTIONS BEFORE YOU START\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eHelpful Answers for \u003cspan class=\"pn-grad\"\u003eYour Next Project.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cdiv class=\"pn-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do petal expansion nuts work?\u003c\/summary\u003e\n\u003cp\u003eWhen you tighten the screw, the slotted metal sleeve compresses and spreads outward behind the panel into a petal-like shape. This helps create a wider bearing surface for the connection.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich size options can I order?\u003c\/summary\u003e\n\u003cp\u003eThe store lists four variants: M4 × 20 mm, M4 × 25 mm, M5 × 25 mm and M6 × 25 mm. Each selected size is offered in a 20-piece pack.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat size drill bit should I use?\u003c\/summary\u003e\n\u003cp\u003eAccording to the seller's size graphics, use an 8 mm bit for the M4 options, 10 mm for M5 × 25 mm, and 12 mm for M6 × 25 mm.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I install them with a screwdriver?\u003c\/summary\u003e\n\u003cp\u003eThe pictured fastener uses a cross-head screw that can be tightened with a properly fitting driver bit. Compatible powered tools may also be used for repetitive work.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these for solid concrete or brick?\u003c\/summary\u003e\n\u003cp\u003eThe product works by opening behind a panel, so it is intended for fastening arrangements with suitable panel thickness and sufficient space for the sleeve to expand. A solid masonry anchor is a different fastening design.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre the nuts stainless steel?\u003c\/summary\u003e\n\u003cp\u003eNo. The seller lists carbon steel with a zinc-plated finish, which is not the same material as stainless steel.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is included in one pack?\u003c\/summary\u003e\n\u003cp\u003eOne selected size pack contains 20 petal expansion fasteners, as shown in the size options. Tools and objects displayed in application photos are not part of the pack.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use them for load-bearing structural work?\u003c\/summary\u003e\n\u003cp\u003eThe seller has not published a verified load rating for these anchors. For safety-critical or structural installations, use fastening systems with appropriate tested load ratings and engineering guidance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- 14 \/ CTA --\u003e\n\u003cdiv class=\"pn-card pn-last\"\u003e\n\u003cspan class=\"pn-kicker\"\u003eBUILD BETTER CONNECTIONS\u003c\/span\u003e\n\u003ch2 class=\"pn-h2\"\u003eGive the Next Fix \u003cspan class=\"pn-grad\"\u003ea Firmer Finish.\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"pn-copy\"\u003eA clever expanding design, zinc-plated steel construction and practical size options—ready for the little projects that deserve a better hold.\u003c\/p\u003e\n\u003ca class=\"pn-button\" href=\"#\" aria-label=\"Return to the product size options and purchase area at the top of the page\"\u003eChoose Your 20-Piece Pack ↑\u003c\/a\u003e\n\u003cp class=\"pn-foot\"\u003eBack to the available sizes, bundle choices and purchasing controls above.\u003c\/p\u003e\n\u003cdiv class=\"pn-tags\"\u003e\n\u003cspan class=\"pn-tag\"\u003e🔩 Petal Expansion\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e⚙️ M4 \/ M5 \/ M6\u003c\/span\u003e\n\u003cspan class=\"pn-tag\"\u003e📦 20 PCS Per Pack\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/section\u003e\n","brand":"WRQ","offers":[{"title":"M4*20mm（20PCS）","offer_id":67824346333550,"sku":"NC02232608214314-M4*20成套*20","price":14.99,"currency_code":"USD","in_stock":true},{"title":"M4*25mm（20PCS）","offer_id":67824346366318,"sku":"NC02232608214314-M4*25成套*20","price":15.99,"currency_code":"USD","in_stock":true},{"title":"M5*25mm（20PCS）","offer_id":67824346399086,"sku":"NC02232608214314-M5*25成套*20","price":16.99,"currency_code":"USD","in_stock":true},{"title":"M6*25mm（20PCS）","offer_id":67824346431854,"sku":"NC02232608214314-M6*25成套*20","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/6499\/4414\/files\/spp_shopify20260727214715_079dbac301056306b62ddf4181f1d507_25e5c45e-7ab7-4556-b7a9-23fe33b1fb20.jpg?v=1787222387","url":"https:\/\/bvuyomi.com\/products\/%f0%9f%94%a9-expansion-screw-petal-nuts-strong-secure-fastening","provider":"Bvuyomi","version":"1.0","type":"link"}