{"product_id":"value-collection-msc-04912184-straight-flute-tap-3-8-16-unc","title":"Value Collection MSC-04912184 Straight Flute Tap 3\/8-16 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION MSC-04912184 is a straight flute tap designed to cut 3\/8-16 UNC internal threads in a left-hand direction. Built from high-speed steel (HSS) with a bright\/uncoated finish, it delivers reliable performance in a wide range of ferrous and non-ferrous materials. The taper chamfer eases thread entry and reduces the torque required to start the cut. With 4 flutes and an H3 thread limit, this tap holds tight tolerances suitable for a Class 3B fit. Overall length is 2-15\/16 inches with a thread length of 1-1\/4 inches. Machinists and maintenance technicians use this tap for hand tapping or machine tapping applications where a left-hand thread is required.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for production and maintenance work in metal fabrication, tooling, and general mechanical assembly where 3\/8-16 UNC left-hand threads are specified. The taper chamfer style makes it appropriate for through-holes or as the first tap in a sequential tapping set. It is well matched to bench work, drill press setups, and CNC tapping operations where left-hand thread orientation is needed to resist loosening under rotational loads.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 UNC thread form with left-hand thread direction for applications requiring reverse-thread fastening\u003c\/li\u003e\n  \u003cli\u003eTaper chamfer (7-10 threads) eases starting and distributes cutting load gradually\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides wear resistance across a range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit maintains Class 3B fit tolerances for precision thread engagement\u003c\/li\u003e\n  \u003cli\u003e4-flute design offers good chip clearance and stable cutting geometry\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish allows direct inspection of tool condition and wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard replacement or production tap for any application requiring a 3\/8-16 UNC, Class 3B, left-hand internal thread in through-hole or blind-hole configurations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or maintenance technician familiar with tapping operations. Always secure the workpiece firmly and align the tap perpendicular to the hole before applying torque. For hand tapping, use a calibrated tap wrench and apply cutting fluid appropriate to the workpiece material to extend tool life and improve thread quality. Because this is a left-hand tap, rotation direction is reversed from standard tapping practice — turn counterclockwise to cut and clockwise to back out.\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\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Taper\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\u003eThread Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.9375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\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: MSC-04912184\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51689356296498,"sku":"MSC-04912184","price":22.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ac3439a1cabd3bb70dfdb1cc8b0d03ef.jpg?v=1788258157","url":"https:\/\/voomisupply.com\/products\/value-collection-msc-04912184-straight-flute-tap-3-8-16-unc","provider":"Voomi Supply","version":"1.0","type":"link"}