{"product_id":"cap-screws-button-socket-steel-black-oxide-4-40-x-1-4","title":"#4-40 X 1\/4\" Button Head Cap Screws | Steel Black Oxide (1 \/ Pkg.)","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eCap Screws Button Socket Steel Black Oxide 4-40 X 1\/4\u003c\/b\u003e delivers a compact, high-strength fastener designed for precision assemblies and equipment builds where a flush, clean appearance matters.\u003c\/p\u003e \u003ch3\u003eProduct Features\u003c\/h3\u003e \u003cp\u003e\u003cb\u003eMaterial:\u003c\/b\u003e Steel — built for durability and load-bearing performance in a variety of applications.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eFinish:\u003c\/b\u003e Black oxide coating provides corrosion resistance, reduces glare, and gives a sleek, professional look.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eHead Type:\u003c\/b\u003e Button head ensures a low-profile capture in tight spaces while maintaining structural integrity.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eDrive Style:\u003c\/b\u003e Socket cap screw with internal hex drive for secure tightening and a clean exterior.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eThread Size and Length:\u003c\/b\u003e 4-40 thread with 1\/4 inch length (0.25\"), suitable for light-to-medium duty fastening in electronics, mechanical assemblies, and machinery.\u003c\/p\u003e \u003cp\u003e\u003cb\u003eApplication:\u003c\/b\u003e Ideal for machine components, electronics enclosures, chassis, hobby projects, and assemblies where a smooth surface is essential.\u003c\/p\u003e \u003ch3\u003eWhy Choose Cap Screws Button Socket Steel Black Oxide 4-40 X 1\/4\u003c\/h3\u003e \u003cp\u003eTrusted for consistent performance, these fasteners pair well with compatible nuts and threaded holes. The black oxide finish minimizes visual distraction in visible installations while providing additional corrosion resistance in mild environments. Precision-machined threads ensure smooth engagement and reliable mating with compatible hardware.\u003c\/p\u003e \u003cp\u003eUpgrade your toolkit with these cap screws to ensure a clean, professional finish in your next build or repair project. Add to cart now to secure fast, lasting joins that stay put under vibration and use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Mutual Screw","offers":[{"title":"Default Title","offer_id":50350676345111,"sku":"0404CSBKC","price":9.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/0404CSB188BYW_8b2df955-b532-43f7-a11b-25a4fa245bc3.jpg?v=1747423226","url":"https:\/\/mutualscrew.com\/products\/cap-screws-button-socket-steel-black-oxide-4-40-x-1-4","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}