{"product_id":"value-collection-jy4749081-hand-tap-1-8-unc-plug-hss","title":"Value Collection JY4749081 Hand Tap 1-8 Unc Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION JY4749081 is a 1-8 UNC straight-flute hand tap designed for cutting internal threads in ferrous and non-ferrous materials. Built from high speed steel with a bright uncoated finish, this tap delivers consistent thread accuracy in production and maintenance threading operations. The plug chamfer — with approximately 3 to 5 threads of lead — makes it the standard choice for threading through-holes and deeper blind holes where a gradual entry is needed. At 5.125 inches overall length, the tap provides adequate shank clearance for use in standard tap wrenches and T-handle drivers. The H11 thread limit indicates an oversize tolerance of 0.0050 inches above nominal, which is commonly selected when tapping for coated fasteners or when thread gauging requirements call for a specific fit class.\u003c\/p\u003e\u003cp\u003eThis tap is suited for manual threading operations in machine shops, maintenance facilities, and trade environments. Right-hand cutting direction makes it compatible with standard tap wrenches and threading accessories. The 4-flute straight-flute configuration provides good chip control in materials such as mild steel, cast iron, aluminum, and similar machinable alloys. It is appropriate for use in both production tapping and field repair scenarios where thread restoration or new thread creation is required in 1-8 UNC applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-8 UNC thread form for standard unified coarse thread applications\u003c\/li\u003e\n\u003cli\u003eH11 thread limit with 0.0050 inches oversize for specific fit-class or post-coat thread clearance\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides gradual thread entry suitable for through-holes and deeper blind holes\u003c\/li\u003e\n\u003cli\u003e4-flute straight-flute geometry supports chip evacuation in a range of machinable materials\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction for durability across moderate-speed hand tapping operations\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish maintains dimensional predictability without coating buildup\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard tap wrench holders and T-handle drivers that accept the shank diameter appropriate for 1-8 UNC hand taps. Suitable for threading through-holes and blind holes requiring a 1-8 UNC thread form at an H11 tolerance class.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eHand tapping should be performed by a qualified machinist or maintenance technician using a properly sized tap wrench. Ensure the workpiece is securely fixtured and the tap is started perpendicular to the work surface to prevent thread misalignment or tap breakage. Apply appropriate cutting fluid for the material being tapped to reduce friction and extend tool life. Reverse the tap periodically during threading to break chips and clear flutes, particularly in deeper holes.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmount Oversize\u003c\/strong\u003e: 0.0050 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.125 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: JY4749081\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51722774708530,"sku":"JY4749081","price":108.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b5004787e7793e59dd7b4b3c1218872a.jpg?v=1788595709","url":"https:\/\/voomisupply.com\/products\/value-collection-jy4749081-hand-tap-1-8-unc-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}