{"product_id":"value-collection-581028pr-hex-socket-cap-screw-1-72-unf","title":"Value Collection 581028PR Hex Socket Cap Screw 1-72 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 581028PR is a hex socket cap screw designed for precise fastening in tight-clearance applications. Manufactured from alloy steel with a black oxide finish, this screw measures 1\/2 inch in length under the head and is threaded 1-72 UNF — an extra-fine unified thread commonly used in instrument assemblies, optical equipment, and small mechanical components. The 1\/16-inch hex drive allows use with a standard ball-end or straight hex key in confined spaces. Fully threaded along its entire shank, it provides consistent clamping force across the full engaged length. Installation requires a 1\/16-inch hex key or driver bit.\u003c\/p\u003e\u003cp\u003eThis fastener is suited for light industrial, precision instrument, and small-equipment assembly work where a fine thread pitch and compact head profile are required. The 1-72 UNF thread size is standard in applications demanding controlled torque and resistance to vibration-induced loosening. Black oxide finish provides mild corrosion resistance and reduces light reflection on finished assemblies. Typically installed by machinists, instrument technicians, or precision assembly workers in production or field-service environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-72 UNF extra-fine thread for precise engagement and vibration resistance\u003c\/li\u003e\n\u003cli\u003eFully threaded shank for maximum thread engagement over the full 1\/2-inch length\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASME\/ANSI B18.3 and ASTM A574 standards\u003c\/li\u003e\n\u003cli\u003eBlack oxide coating provides mild corrosion resistance and low-reflectance appearance\u003c\/li\u003e\n\u003cli\u003e1\/16-inch hex drive for use in confined or recessed fastening locations\u003c\/li\u003e\n\u003cli\u003eMinimum order quantity of 100 pieces supports production and assembly line use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 1-72 UNF hex socket cap screw conforming to ASME\/ANSI B18.3 and ASTM A574, suitable for tapped holes requiring a 1-72 thread form in precision instrument and small mechanical assemblies.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed with a 1\/16-inch hex key or socket driver; confirm the mating tapped hole is clean and free of debris before driving. De-energize or power down any equipment before servicing fasteners on live assemblies. Do not exceed the design torque for the tapped material — alloy steel screws into softer substrates such as aluminum or plastic can strip threads if overtightened. Follow applicable mechanical assembly standards for the equipment type being serviced.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-72 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1\/2 inch\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: 1\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully Threaded\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\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 100 pieces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 581028PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51698960924978,"sku":"581028PR","price":6738.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c9d7de93e418090181f0bd16ba3b802b.jpg?v=1788370397","url":"https:\/\/voomisupply.com\/products\/value-collection-581028pr-hex-socket-cap-screw-1-72-unf","provider":"Voomi Supply","version":"1.0","type":"link"}