{"product_id":"value-collection-721159pr-flat-socket-cap-screw-1-4-28","title":"Value Collection 721159PR Flat Socket Cap Screw 1\/4-28","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 721159PR is a flat socket cap screw designed for precision fastening applications where a flush or countersunk head profile is required. Sized at 1\/4-28 UNF x 2-1\/4 inches overall length, this screw features an 82-degree flat head driven by a 5\/32-inch hex socket. Constructed from alloy steel with a black oxide finish, it delivers solid mechanical strength and moderate corrosion resistance. The partially threaded shank allows for controlled clamping force in assemblies where the unthreaded portion serves as a shoulder or alignment reference. Installation requires a standard 5\/32-inch hex key or Allen driver.\u003c\/p\u003e\n\u003cp\u003eThis flat socket cap screw is suited for use in mechanical assemblies, tooling fixtures, machine components, and fabrication applications across manufacturing, maintenance, and industrial trades. The 82-degree countersunk head seats flush with or below the surface, making it appropriate for installations where head protrusion is not acceptable. The UNF fine-thread pitch provides precise thread engagement and resistance to loosening in vibration-prone environments. Licensed trades, machinists, and maintenance technicians commonly specify this fastener type for equipment assembly and repair work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat head for flush countersunk installations\u003c\/li\u003e\n  \u003cli\u003e5\/32-inch hex socket drive for precise torque application\u003c\/li\u003e\n  \u003cli\u003e1\/4-28 UNF fine-thread specification for tight thread engagement\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank for controlled clamping and alignment\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction for high tensile strength\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for mild corrosion protection and reduced light reflection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard-spec fastener for mechanical assemblies requiring a 1\/4-28 UNF flat socket cap screw meeting ASME\/ANSI B18.3 and ASTM F835 standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists, millwrights, or qualified maintenance technicians using a calibrated 5\/32-inch hex key or driver bit. Ensure the mating countersink angle matches 82 degrees before installation to achieve proper head seating and avoid fastener damage. De-energize and lock out all equipment before servicing any assembly containing this fastener. Do not exceed the rated mechanical load for the 1\/4-28 thread class specified for the assembly.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: 82-degree Flat\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\/32 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\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM F835\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\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: 721159PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51690419192114,"sku":"721159PR","price":1601.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f8ee9c2383a3c2bc13f4b4c4aa4d8a0f.jpg?v=1788269960","url":"https:\/\/voomisupply.com\/products\/value-collection-721159pr-flat-socket-cap-screw-1-4-28","provider":"Voomi Supply","version":"1.0","type":"link"}