{"product_id":"gibraltar-31332sg-steel-thumb-screw-5-16-18-knurled","title":"Gibraltar 31332SG Steel Thumb Screw 5\/16-18 Knurled","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GIBRALTAR 31332SG is a steel thumb screw with a knurled head, designed for tool-free manual adjustment in industrial, mechanical, and assembly applications. It features a 5\/16-18 UNC thread and a swivel pad tip that pivots up to 20 degrees, allowing the fastener to seat firmly against angled or irregular surfaces without marring them. The black oxide finish provides moderate corrosion resistance and reduces light reflection in precision environments. At 0.14 pounds, this is a compact, single-piece fastener suited for frequent hand-adjustment cycles where a conventional hex or socket fastener would be impractical.\u003c\/p\u003e\u003cp\u003eThis thumb screw is used in jigs, fixtures, machine tool setups, workholding applications, and general industrial assembly wherever repeatable manual clamping or positioning is needed. The swivel pad tip makes it particularly well-suited for setups where the clamping surface is not perpendicular to the screw axis. It is installed and adjusted by hand without tooling, making it appropriate for production environments, tooling rooms, and fabrication shops. Machinists, toolmakers, and assembly technicians are the typical end users.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread for wide compatibility with standard tapped holes\u003c\/li\u003e\n\u003cli\u003eKnurled head allows secure hand grip for tool-free adjustment\u003c\/li\u003e\n\u003cli\u003eSwivel pad tip pivots up to 20 degrees to accommodate angled clamping surfaces\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish for corrosion resistance and reduced glare\u003c\/li\u003e\n\u003cli\u003eSteel construction throughout, including the swivel tip, for durability under clamping load\u003c\/li\u003e\n\u003cli\u003eNo-shoulder design for straightforward thread engagement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard UNC thumb screw replacement or upgrade for 5\/16-18 tapped holes in jigs, fixtures, and industrial workholding equipment.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eNo tools are required for installation or adjustment under normal hand-tightening use. Verify that the mating tapped hole meets 5\/16-18 UNC thread standards before installation. Do not exceed the manual torque achievable by hand, as over-torquing with a wrench can damage the knurled head or swivel pad assembly. Inspect the swivel pad periodically for wear if used in high-cycle clamping applications.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eHead Type\u003c\/strong\u003e: Knurled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Type\u003c\/strong\u003e: Swivel Pad\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Swivel Angle\u003c\/strong\u003e: 20 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShoulder Type\u003c\/strong\u003e: Without Shoulder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.14 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GIBRALTAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 31332SG\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GIBRALTAR","offers":[{"title":"Default Title","offer_id":51699913392434,"sku":"31332SG","price":46.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a3338d17bf3fc98a966db539ac60c496.jpg?v=1788383219","url":"https:\/\/voomisupply.com\/products\/gibraltar-31332sg-steel-thumb-screw-5-16-18-knurled","provider":"Voomi Supply","version":"1.0","type":"link"}