{"product_id":"value-collection-581049pr-hex-socket-cap-screw-2-56-unc","title":"Value Collection 581049PR Hex Socket Cap Screw 2-56 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581049PR is a hex socket cap screw designed for applications requiring a compact, high-strength fastener in tight spaces. Manufactured from alloy steel with a black oxide finish, this screw features a 2-56 UNC thread and measures 7\/8 inches in length under the head. It is partially threaded, making it suited for clamped-joint applications where thread engagement into a tapped hole is preferred. The 5\/64 inch hex drive accepts a standard hex key or Allen wrench. This fastener meets ASME\/ANSI B18.3 and ASTM A574 standards, confirming dimensional accuracy and mechanical strength. It is used by machinists, assembly technicians, and maintenance professionals across precision manufacturing and mechanical assembly environments.\u003c\/p\u003e\n\u003cp\u003eThis screw is commonly used in light-duty mechanical assemblies, instrument enclosures, fixture work, and electronic equipment where a small-diameter machine screw with a recessed drive head is required. The 2-56 UNC thread is one of the finer unified coarse designations at this diameter, providing good thread engagement in thin or precision-tapped components. The black oxide coating offers a degree of corrosion resistance and reduces light reflection, which can be relevant in optical or electronic assembly contexts. Installation requires a 5\/64 inch hex key.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e2-56 UNC thread for use in precision-tapped holes at this small diameter\u003c\/li\u003e\n  \u003cli\u003e7\/8 inch length under head with partial threading for clamped-joint fastening\u003c\/li\u003e\n  \u003cli\u003e5\/64 inch hex socket drive compatible with standard hex keys\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASTM A574 mechanical strength requirements\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for mild corrosion resistance and low-reflectance appearance\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME\/ANSI B18.3 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard-stock fastener for any tapped 2-56 UNC hole requiring a hex socket cap screw per ASME\/ANSI B18.3 dimensional specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed using a 5\/64 inch hex key or Allen wrench. Ensure the mating tapped hole is clean and free of debris before threading the screw. De-energize or power down any equipment before fastener replacement or adjustment on assemblies involving electrical components. Do not overtighten small-diameter screws in soft materials such as aluminum or plastic, as thread stripping can occur.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 2-56 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 7\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex Socket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 5\/64 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM A574\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 581049PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51697007821106,"sku":"581049PR","price":2808.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/25bea0670660ffaf4d2653b3c991618c.jpg?v=1788348403","url":"https:\/\/voomisupply.com\/products\/value-collection-581049pr-hex-socket-cap-screw-2-56-unc","provider":"Voomi Supply","version":"1.0","type":"link"}