{"product_id":"value-collection-581138pr-hex-socket-cap-screw-4-48-unf","title":"Value Collection 581138PR Hex Socket Cap Screw 4-48 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581138PR is a hex socket cap screw designed for applications requiring a compact, high-strength threaded fastener. It features a 4-48 UNF thread size, a 1\/8 inch length under the head, and a 3\/32 inch hex drive. Constructed from alloy steel with a black oxide finish, this fastener delivers solid tensile strength and moderate corrosion resistance in a small form factor. Fully threaded along its length, it provides maximum thread engagement for its size. It meets ASME\/ANSI B18.3 and ASTM A574 standards, confirming dimensional and mechanical compliance for precision and structural applications.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for light mechanical assemblies, instrument panels, electronic enclosures, and precision equipment where a small-diameter, fine-thread fastener is required. The 4-48 UNF thread form is common in instrumentation, optical mounts, and close-tolerance machine work. The black oxide coating helps reduce light reflection and provides mild protection in dry or low-humidity environments. Sold in quantities of 100 per order, this screw is appropriate for production builds, maintenance stock, and bench-level repair work performed by machinists, technicians, and mechanical contractors.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-48 UNF fully threaded for maximum thread engagement in thin or shallow bosses\u003c\/li\u003e\n  \u003cli\u003e3\/32 inch hex drive accepts standard hex key or Allen wrench for torquing in tight clearances\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction provides high tensile strength relative to screw size\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish reduces surface reflection and offers mild corrosion resistance in dry environments\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM A574 standards for dimensional accuracy and mechanical properties\u003c\/li\u003e\n  \u003cli\u003eMinimum order quantity of 100 units supports production and stocking applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard-dimension replacement or production fastener for any application requiring a 4-48 UNF hex socket cap screw with a 1\/8 inch length under head and 3\/32 inch drive, per ASME\/ANSI B18.3 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists or mechanical technicians using a 3\/32 inch hex key or T-handle Allen driver. Ensure the mating tapped hole is clean and free of debris before threading. Do not exceed the design torque range for 4-48 UNF alloy steel fasteners as determined by the assembly engineer or applicable specification. Black oxide coatings do not substitute for corrosion-resistant finishes in wet or outdoor environments.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-48 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/32 inches\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 and ASTM A574\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.001 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 100\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: 581138PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51709012410674,"sku":"581138PR","price":4715.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/25e009a10d2df368fca37fc8d5685182.jpg?v=1788449976","url":"https:\/\/voomisupply.com\/products\/value-collection-581138pr-hex-socket-cap-screw-4-48-unf","provider":"Voomi Supply","version":"1.0","type":"link"}