{"product_id":"value-collection-jy4912168-3-8-16-lh-plug-hand-tap-hss","title":"Value Collection JY4912168 3\/8-16 Lh Plug Hand Tap Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION JY4912168 is a 3\/8-16 UNC left-hand plug hand tap ground from high speed steel with a bright, uncoated finish. It is designed for cutting internal left-hand threads in through-holes and blind holes where standard right-hand threading is not suitable. The plug chamfer — typically 3 to 5 threads — makes it versatile for starting in a hole and continuing to near the bottom. With 4 straight flutes and an H3 thread limit, this tap holds tight tolerances for Class 3B thread fits. Overall length is 2-15\/16 inches. Machinists, tool-and-die workers, and maintenance technicians use this tap for repair threading and production work on ferrous and non-ferrous materials.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for hand tapping operations in metalworking, fabrication, and maintenance environments. Left-hand taps are specified when the fastener or threaded component must resist loosening from counterclockwise rotation — common in applications such as left-hand threaded spindles, turnbuckles, and certain equipment repair scenarios. The 3\/8-16 UNC thread form is a widely used coarse-pitch standard size found across general manufacturing, structural, and mechanical assembly work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLeft-hand thread direction for applications requiring reverse-rotation thread engagement\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer style for general-purpose through-hole and blind-hole tapping\u003c\/li\u003e\n  \u003cli\u003e4 straight flutes for chip clearance in a range of materials\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit holds Class 3B fit tolerances for precision thread quality\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides durability across ferrous and non-ferrous workpieces\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish — no coating to flake or affect thread dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard hand tap for 3\/8-16 UNC left-hand threaded holes in metalworking and maintenance applications. Compatible with standard tap wrenches and T-handle holders sized for the tap's square drive end.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is intended for hand tapping; secure the workpiece firmly before threading to prevent movement. Use a cutting fluid appropriate for the workpiece material to extend tap life and improve thread finish. Left-hand taps must be turned counterclockwise to cut — confirm thread direction before applying torque to avoid tap breakage. Back the tap off periodically to break chips and clear the flutes.\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\u003eThread Direction\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Straight\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Bright \/ Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-15\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: JY4912168\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51715988390194,"sku":"JY4912168","price":22.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d98cc76541c07f85837a44d2206adaf1.jpg?v=1788520631","url":"https:\/\/voomisupply.com\/products\/value-collection-jy4912168-3-8-16-lh-plug-hand-tap-hss","provider":"Voomi Supply","version":"1.0","type":"link"}