{"product_id":"value-collection-40881-3-button-socket-cap-screw","title":"Value Collection -40881-3 Button Socket Cap Screw","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION -40881-3 is a button socket cap screw designed for secure, low-profile fastening in mechanical assemblies, fixtures, and equipment. It features a 5\/16-18 UNC thread with a 1-1\/2 inch length under head and is fully threaded for maximum thread engagement. The alloy steel construction with a black oxide finish delivers corrosion resistance and durability in demanding service environments. A 3\/16 inch hex socket drive provides reliable torque transfer during installation. This fastener is suited for use by machinists, maintenance technicians, and mechanical contractors working on industrial and commercial equipment.\u003c\/p\u003e\n\u003cp\u003eThis screw is commonly used in applications where a flush or recessed fastener head is required to avoid interference with adjacent components. Typical uses include machine guards, fixture plates, enclosures, brackets, and structural assemblies where a standard hex head fastener would protrude. The button head profile distributes clamp load over a wider bearing surface compared to a flat or socket head cap screw. It is available in a minimum order quantity of 50 pieces per order, packaged as a single unit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 UNC fully threaded alloy steel construction for high-strength fastening\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides corrosion resistance and reduces light reflection\u003c\/li\u003e\n  \u003cli\u003eButton head profile offers low-profile clearance and wider bearing surface\u003c\/li\u003e\n  \u003cli\u003e3\/16 inch hex socket drive for use with standard hex keys and socket tooling\u003c\/li\u003e\n  \u003cli\u003eHardness rated 36-43 HRC for reliable performance in high-load applications\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI\/ASME B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard UNC button socket cap screw replacement for mechanical assemblies requiring a 5\/16-18 thread, 1-1\/2 inch length under head, and a hex socket drive interface.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a 3\/16 inch hex key or T-handle driver. Verify thread fit class 3A compatibility with the mating threaded insert or tapped hole before installation. Apply appropriate thread lubricant or thread-locking compound as required by the application. Do not exceed the rated torque range for the fastener diameter and material grade.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Fit Class\u003c\/strong\u003e: 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1.5 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: 0.166 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\/16 inches\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\u003eHardness\u003c\/strong\u003e: 36-43 HRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ANSI\/ASME B18.3, ASTM F835\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: -40881-3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51706345390386,"sku":"-40881-3","price":86.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fa26238a42891a2a4f3bd7398c0c51b7.jpg?v=1788433910","url":"https:\/\/voomisupply.com\/products\/value-collection-40881-3-button-socket-cap-screw","provider":"Voomi Supply","version":"1.0","type":"link"}