{"product_id":"type-a-sheet-metal-screws-indented-hex-washer-head-slotted-drive-steel-zinc-plated-5-16-20-x-1-3-4_3128awkc","title":"5\/16 X 1-3\/4\" Type A Self Tapping Sheet Metal Screws | Indented Hex Washer Head | Unslotted Drive | Steel Zinc \u0026 Bake (900\/Pkg.)","description":"\u003cdiv\u003eType A self tapping sheet metal screws provide reliable thread formation in metal substrates with high torque transfer. Indented hex washer head, unslotted drive, zinc plated baked finish, 5\/16″ diameter by 1-3\/4″ length; package quantity 900 pieces. \u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 5\/16″\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 1-3\/4″\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc plating with baked-on finish\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDrive type\u003c\/strong\u003e: Unslotted\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThread type\u003c\/strong\u003e: Self tapping\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSelf tapping\u003c\/strong\u003e: Forms mating threads in sheet metal during drive, eliminating pre-drilling for appropriate thicknesses and enabling rapid assembly.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHead geometry\u003c\/strong\u003e: Indented hex washer head provides flush seating and distributes clamping force across the surface to reduce pull-through on thinner panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDrive type\u003c\/strong\u003e: Unslotted hex drive requires a hex driver, delivering higher torque transfer and improved tool engagement compared to slotted variants.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Zinc plating with baked-on finish offers corrosion protection for indoor environments and helps resist wear during handling.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel provides reliable mechanical strength and compatibility with common metal substrates used in enclosures, panels, and housings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal applications\u003c\/strong\u003e: Electrical enclosures, metal panels, automotive interior trims, appliance housings, and HVAC components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":52814957576471,"sku":"3128AWKC","price":351.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0608AWKC_43.webp?v=1776637532","url":"https:\/\/mutualscrew.com\/products\/type-a-sheet-metal-screws-indented-hex-washer-head-slotted-drive-steel-zinc-plated-5-16-20-x-1-3-4_3128awkc","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}