{"product_id":"metal-expansion-screws-anchor-bolts-carbon-steel-self-tapping","title":"Metal Expansion Screws \u0026 Anchor Bolts | Carbon Steel 20–100 Sets","description":"\n\u003ch2\u003eMetal Expansion Screws \u0026amp; Anchor Bolts – Carbon Steel Fasteners for Concrete \u0026amp; Masonry\u003c\/h2\u003e\n\u003cp\u003eBuilt for professionals and DIY enthusiasts alike, these \u003cstrong\u003emetal expansion tube screws\u003c\/strong\u003e deliver rock-solid anchoring in concrete, brick, drywall, and masonry surfaces. Made from durable \u003cstrong\u003eplain carbon steel\u003c\/strong\u003e, each set pairs a self-tapping screw with a matching expansion tube to create a reliable, load-bearing fastening point — no specialist tools required.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose These Expansion Screws?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Strength Carbon Steel:\u003c\/strong\u003e Engineered for long-lasting performance in demanding construction and renovation environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Tapping Design:\u003c\/strong\u003e The tapered screw thread cuts into the expansion tube automatically as you drive it, locking the anchor firmly in place.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Sizing:\u003c\/strong\u003e Available in 8mm and 10mm to suit a wide range of wall thicknesses and fixing requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBulk Value Packs:\u003c\/strong\u003e Choose from 20, 50, or 100 sets — ideal for small repairs, large renovation projects, or keeping workshop stock well stocked.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application:\u003c\/strong\u003e Perfect for securing shelving, fixtures, electrical conduit, frames, and general home or room decoration anchoring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Easy to Handle:\u003c\/strong\u003e Compact form factor makes installation quick and straightforward, even in tight spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlain Carbon Steel (Iron)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSizes Available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8mm \/ 10mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eScrew Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelf-Tapping Expansion Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 Sets, 50 Sets, or 100 Sets (screws + expansion tubes)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConcrete, Brick, Masonry, Drywall, Home \u0026amp; Room Decoration\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e20-Set Pack:\u003c\/strong\u003e 20 × Self-Tapping Screws + 20 × Expansion Tubes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e50-Set Pack:\u003c\/strong\u003e 50 × Self-Tapping Screws + 50 × Expansion Tubes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100-Set Pack:\u003c\/strong\u003e 100 × Self-Tapping Screws + 100 × Expansion Tubes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Need\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-inch-threaded-brass-ball-valve-water-gas-oil-flow-control\"\u003e1-Inch Threaded Brass Ball Valve – Water, Gas \u0026amp; Oil Flow Control\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-300mm-adjustable-pcb-holder-360-rotation-soldering-stand-clamp\"\u003e0–300mm PCB Holder Stand | 360° Rotation Soldering Clamp\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-5-inch-ultra-quiet-nylon-drawer-pulley-mini-cabinet-caster-wheel\"\u003e0.5\" Ultra Quiet Nylon Drawer Pulley Mini Cabinet Caster Wheel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor general guidelines on safe fastening and construction practices, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Autoclaved_aerated_concrete\" target=\"_blank\" rel=\"noopener\"\u003eAutoclaved aerated concrete\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What surfaces are these metal expansion screws suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: These carbon steel expansion screws are designed for use in concrete, brick, masonry, and drywall surfaces. They are ideal for securing shelves, fixtures, conduit, frames, and general home decoration fastenings in both indoor and outdoor settings.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between the 8mm and 10mm sizes?\u003c\/h4\u003e\n\u003cp\u003eA: The size refers to the diameter of the expansion tube and drill hole required. 8mm anchors are suited to lighter fixtures and thinner walls, while 10mm anchors provide greater holding strength for heavier loads and thicker concrete or masonry.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I install these self-tapping expansion screws?\u003c\/h4\u003e\n\u003cp\u003eA: Drill a hole in the wall matching the tube diameter (8mm or 10mm), insert the expansion tube flush with the surface, align your fixture, and drive the self-tapping screw through. As the screw is tightened, the tube expands outward to grip the surrounding material securely.\u003c\/p\u003e\n\u003ch4\u003eQ: Are these screws suitable for outdoor use?\u003c\/h4\u003e\n\u003cp\u003eA: These screws are made from plain carbon steel. For prolonged outdoor or high-moisture environments, we recommend applying a protective coating or using them in sheltered locations to maintain longevity.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What surfaces are these metal expansion screws suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These carbon steel expansion screws are designed for use in concrete, brick, masonry, and drywall surfaces. They are ideal for securing shelves, fixtures, conduit, frames, and general home decoration fastenings in both indoor and outdoor settings.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between the 8mm and 10mm sizes?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The size refers to the diameter of the expansion tube and drill hole required. 8mm anchors are suited to lighter fixtures and thinner walls, while 10mm anchors provide greater holding strength for heavier loads and thicker concrete or masonry.\"}}, {\"@type\": \"Question\", \"name\": \"How do I install these self-tapping expansion screws?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Drill a hole in the wall matching the tube diameter (8mm or 10mm), insert the expansion tube flush with the surface, align your fixture, and drive the self-tapping screw through. 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For prolonged outdoor or high-moisture environments, we recommend applying a protective coating or using them in sheltered locations to maintain longevity.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Crafts, DIY \u0026 Stationery\", \"item\": \"https:\/\/oasis-select.com\/collections\/crafts-diy-stationery\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Metal Expansion Screws \u0026 Anchor Bolts | Carbon Steel 20–100 Sets\", \"item\": \"https:\/\/oasis-select.com\/products\/metal-expansion-screws-anchor-bolts-carbon-steel-self-tapping\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"M8 100Sets","offer_id":47755126603881,"sku":"14:10#M8 100Sets","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M6 100Sets","offer_id":47755126636649,"sku":"14:366#M6 100Sets","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M6 50Sets M8 50Sets","offer_id":47755126669417,"sku":"14:200006151#M6 50Sets M8 50Sets","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M6 10Sets M8 10Sets","offer_id":47755126702185,"sku":"14:496#M6 10Sets M8 10Sets","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M8 50pcs","offer_id":47755126734953,"sku":"14:200005536#M8 50pcs","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M6 50pcs","offer_id":47755126767721,"sku":"14:193#M6 50pcs","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M8 100pcs","offer_id":47755126800489,"sku":"14:365458#M8 100pcs","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M8 50Sets","offer_id":47755126833257,"sku":"14:175#M8 50Sets","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M6 100pcs","offer_id":47755126866025,"sku":"14:173#M6 100pcs","price":70.96,"currency_code":"USD","in_stock":true},{"title":"M6 50Sets","offer_id":47755126898793,"sku":"14:29#M6 50Sets","price":70.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sef0415f6678f4a4d8e3bd9ab6d31f580b.webp?v=1783266967","url":"https:\/\/oasis-select.com\/products\/metal-expansion-screws-anchor-bolts-carbon-steel-self-tapping","provider":"Oasis Select","version":"1.0","type":"link"}