{"product_id":"vlier-sch342-knurled-thumb-screw-3-8-16-unc-3-in-steel","title":"Vlier SCH342 Knurled Thumb Screw 3\/8-16 Unc 3 in Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VLIER SCH342 is a knurled head thumb screw designed for tool-free manual adjustment and clamping in industrial, mechanical, and assembly applications. Machined from steel with a black oxide finish, this thumb screw features a swivel pad tip that self-aligns to workpiece surfaces, reducing point stress during clamping. The 3\/8-16 UNC thread is a standard coarse-thread size commonly found in fixtures, jigs, and machine tooling. At 3 inches overall length with a 1.25-inch diameter knurled head, this fastener provides solid grip and torque for hand-tightened applications. Manufactured to ISO 9001 standards.\u003c\/p\u003e\n\u003cp\u003eThis thumb screw is suited for use in machine tool fixtures, workholding setups, inspection fixtures, and general industrial assembly where frequent manual adjustment is required. The swivel pad tip accommodates slight angular variation between the screw and the clamping surface, making it appropriate for use against angled or uneven workpieces. The without-shoulder configuration allows straightforward installation into standard threaded holes without requiring a counterbore or shoulder seat.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 UNC coarse thread for broad fixture and tooling compatibility\u003c\/li\u003e\n  \u003cli\u003eKnurled head at 1.25 inches diameter provides secure manual grip without tools\u003c\/li\u003e\n  \u003cli\u003eSwivel pad tip with 7.5-degree swivel angle self-aligns to workpiece surfaces\u003c\/li\u003e\n  \u003cli\u003eSteel construction with black oxide finish for corrosion resistance in shop environments\u003c\/li\u003e\n  \u003cli\u003eWithout-shoulder design fits standard threaded holes directly\u003c\/li\u003e\n  \u003cli\u003eManufactured under ISO 9001 quality management standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 3\/8-16 UNC thumb screw for use in industrial fixtures, jigs, workholding equipment, and machine tooling that accept a 3\/8-16 threaded fastener.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists or assembly technicians using hand pressure only; avoid using wrenches or power tools on the knurled head, as this can damage the head or over-stress the thread. Ensure the mating threaded hole is clean and free of debris before installation. Verify thread engagement depth is sufficient for the application load before service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\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: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.5 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 Swivel Angle\u003c\/strong\u003e: 7.5 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTip Diameter\u003c\/strong\u003e: 0.293 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTip Material\u003c\/strong\u003e: Steel\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\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ISO 9001\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: VLIER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SCH342\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLIER","offers":[{"title":"Default Title","offer_id":52019932692786,"sku":"SCH342","price":108.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/35de387c8eb912762e0368adc3d50390.jpg?v=1790011352","url":"https:\/\/voomisupply.com\/products\/vlier-sch342-knurled-thumb-screw-3-8-16-unc-3-in-steel","provider":"Voomi Supply","version":"1.0","type":"link"}