{"product_id":"machine-screws-flat-head-spanner-brass-1-4-20-x-1-1-2_1424smfb","title":"1\/4\"-20 X 1-1\/2\" Tamper Resistant Machine Screws | Flat Head | Spanner Drive | Brass (100\/Pkg.)","description":"\u003cdiv\u003eBrass flat head machine screws provide flush fastening for industrial assemblies. They offer corrosion resistance and a clean surface profile for electronics enclosures, cabinetry, and metal-to-metal interfaces. \u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDimensions\u003c\/strong\u003e: Length 38.1 mm (1-1\/2 inch); Diameter 6.35 mm (1\/4 inch)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Brass\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDrive type\u003c\/strong\u003e: Spanner drive\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial grade\u003c\/strong\u003e: Brass\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThread type\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFlush surface and head profile\u003c\/strong\u003e: Flat head seats flush into panels, reducing protrusion and snag risk in enclosures and control interfaces.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCorrosion resistance\u003c\/strong\u003e: Brass composition provides inherent resistance to corrosion in indoor and mildly corrosive environments when paired with compatible alloys.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpanner drive efficiency\u003c\/strong\u003e: Spanner drive enables rapid, tool-friendly tightening with minimized cam-out in high-throughput production settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThread engagement strength\u003c\/strong\u003e: Coarse 1\/4-20 thread offers robust holding power in thin gauge metals and metal-to-metal joints typical of electronics housings and cabinetry.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial compatibility\u003c\/strong\u003e: Best paired with brass or compatible alloys to maintain galvanic compatibility and uniform aesthetics across fastened joints.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTypical applications\u003c\/strong\u003e: Electronics enclosures, cabinetry, appliances, and general hardware assemblies requiring flush fastening and corrosion resistance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInstallation considerations\u003c\/strong\u003e: Ensure clearance for spanner driver and verify material thickness to achieve full thread engagement; plan for pre-tap when working with thicker panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50425550799127,"sku":"1424SMFB","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0606SMFB_b1b7e30f-d784-43c5-8a6b-f9c57a46738f.jpg?v=1746140693","url":"https:\/\/mutualscrew.com\/products\/machine-screws-flat-head-spanner-brass-1-4-20-x-1-1-2_1424smfb","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}