{"product_id":"value-collection-581567pr-hex-socket-cap-screw-1-2-13-unc","title":"Value Collection 581567PR Hex Socket Cap Screw 1\/2-13 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581567PR is a partially threaded hex socket cap screw designed for high-strength bolted connections in mechanical, structural, and industrial assembly applications. It features a 1\/2-13 UNC thread size and measures 12 inches in length under the head, making it suitable for deep-reach fastening where standard-length fasteners fall short. The screw is machined from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and reduces light glare on tooled surfaces. A 3\/8-inch hex drive socket is required for installation. Machinists, millwrights, and mechanical contractors are the primary installers of this fastener.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is used in general industrial machinery assembly, jig and fixture builds, heavy equipment maintenance, and structural steel fabrication where a recessed-drive, high-tensile fastener is specified. The 1\/2-13 UNC coarse thread pattern seats quickly and holds reliably in steel and cast-iron tapped holes. The 12-inch under-head length suits thick stack-ups, long-reach clamping, and through-bolt configurations that require extended grip length. It meets ASME\/ANSI B18.3 and ASTM A574 standards, confirming dimensional and mechanical property compliance for critical fastener applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2-13 UNC coarse thread for fast engagement in steel and cast-iron tapped holes\u003c\/li\u003e\n  \u003cli\u003e12-inch length under head accommodates thick stack-ups and long-reach installations\u003c\/li\u003e\n  \u003cli\u003ePartial threading leaves a smooth shank section for shear-load and alignment applications\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction provides high tensile and shear strength\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish offers mild corrosion resistance and low-reflectance surface\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM A574 standards for dimensional and mechanical compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard ASME\/ANSI B18.3 hex socket cap screw for use in any tapped hole or nut accepting a 1\/2-13 UNC thread. Compatible with standard 3\/8-inch hex drive socket tools and bits.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists, millwrights, or mechanical contractors using a 3\/8-inch hex drive socket or Allen-style key. Ensure the mating tapped hole is clean, free of debris, and cut to 1\/2-13 UNC specification before driving the fastener. Apply thread lubricant or anti-seize compound as required by the assembly specification, particularly when threading into dissimilar metals. De-energize and lock out all equipment before replacing or installing fasteners on operating machinery in accordance with applicable OSHA lockout\/tagout procedures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 12 inches\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: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\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: 0.65 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: 581567PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51714708144434,"sku":"581567PR","price":2195.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/38ce3c883fb59d4522642d12e9141528.jpg?v=1788505179","url":"https:\/\/voomisupply.com\/products\/value-collection-581567pr-hex-socket-cap-screw-1-2-13-unc","provider":"Voomi Supply","version":"1.0","type":"link"}