{"product_id":"value-collection-93051-button-socket-cap-screw-4-40-x-5-16","title":"Value Collection 93051 Button Socket Cap Screw 4-40 X 5\/16","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 93051 is a button socket cap screw designed for precision fastening applications where a low-profile head and high corrosion resistance are required. Threaded 4-40 UNC with a 5\/16 inch length under head, the screw is fully threaded and drives with a 1\/16 inch hex socket. Made from 18-8 stainless steel with a bright uncoated finish, it meets ANSI\/ASME B18.3 and ASTM F837 standards. Machinists, maintenance technicians, and assembly professionals install these in light-duty mechanical assemblies, electronics enclosures, and instrumentation hardware.\u003c\/p\u003e\n\u003cp\u003eThis fastener is suited for light mechanical assemblies requiring a flush, rounded head profile with minimal protrusion. The 4-40 UNC thread standard is common in small-format instrumentation, electronics chassis, and precision mechanical devices. The 18-8 stainless steel construction handles mildly corrosive environments including indoor industrial and marine-adjacent settings. Right-hand thread direction and a Class 3A thread fit make it compatible with standard 4-40 tapped holes across a wide range of materials including aluminum, steel, and thermoplastics.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eButton head profile provides low clearance and a smooth, rounded top surface\u003c\/li\u003e\n  \u003cli\u003e18-8 stainless steel construction resists corrosion in mildly aggressive environments\u003c\/li\u003e\n  \u003cli\u003eFully threaded 4-40 UNC at 5\/16 inch length under head for maximum thread engagement in thin materials\u003c\/li\u003e\n  \u003cli\u003e1\/16 inch hex socket drive compatible with standard ball-end hex keys and hex bits\u003c\/li\u003e\n  \u003cli\u003eClass 3A thread fit ensures consistent engagement with standard tapped holes\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI\/ASME B18.3 and ASTM F837 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard-use fastener for any application requiring a 4-40 UNC button socket cap screw with a 5\/16 inch length under head.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall using a calibrated 1\/16 inch hex key or hex bit driver. Ensure the mating tapped hole meets 4-40 UNC Class 3B tolerance before driving. Do not exceed the torque capacity of the 18-8 stainless steel material, as stainless fasteners at small diameters are susceptible to galling — apply an appropriate anti-seize compound when driving into stainless or aluminum. Power down any equipment before accessing fastened panels or enclosures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Fit Class\u003c\/strong\u003e: 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Button\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.0590 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: 1\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: 18-8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ANSI\/ASME B18.3 and ASTM F837\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: 93051\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51720614314290,"sku":"93051","price":1509.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/03879d8c9a2d767cb77a4d73078bbf80.jpg?v=1788566959","url":"https:\/\/voomisupply.com\/products\/value-collection-93051-button-socket-cap-screw-4-40-x-5-16","provider":"Voomi Supply","version":"1.0","type":"link"}