{"product_id":"hertel-k008385as-straight-flute-tap-5-16-18-unc-bottoming","title":"Hertel K008385AS Straight Flute Tap 5\/16-18 Unc Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K008385AS is a straight flute bottoming tap designed for cutting internal threads in pre-drilled holes where thread engagement must extend close to the bottom of a blind bore. Manufactured from high-speed steel with a bright, uncoated finish, this tap cuts 5\/16-18 UNC right-hand threads to a 3B class of fit with an H3 thread limit. The 2-flute straight flute geometry provides chip clearance in through-holes and shallow blind applications. It is a standard-duty tap suited for use by machinists, maintenance technicians, and trade professionals working in metal fabrication, HVAC equipment assembly, and mechanical installation tasks.\u003c\/p\u003e\u003cp\u003eThis tap is sized for 5\/16-18 UNC threads, one of the most common unified coarse thread sizes in trade and industrial applications. It is appropriate for use in ferrous and non-ferrous metals in residential and light commercial maintenance settings. The bottoming chamfer style  -  with only 1 to 2 threads of lead  -  allows threading to within a minimal distance of the bottom of a blind hole, making it the correct choice when full thread depth is required near the hole floor. The H3 thread limit supports consistent fit with standard 3B tolerance hardware.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003e5\/16-18 UNC thread form with right-hand thread direction\u003c\/li\u003e\n\u003cli\u003e3B class of fit with H3 thread limit for standard tolerance hardware\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for durability across ferrous and non-ferrous workpieces\u003c\/li\u003e\n\u003cli\u003e2-flute straight flute design for chip clearance in shallow applications\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish  -  no coating buildup concerns in precision thread applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard OEM-style replacement or new-install tap for use in any application requiring 5\/16-18 UNC internal threads cut to a 3B class of fit with a bottoming chamfer profile.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or trade professionals using a tap wrench or machine tap holder appropriate for the thread size. Ensure the workpiece is securely fixtured before tapping. Apply a suitable cutting fluid for the base material to reduce tool wear and improve thread finish. For blind holes, use a bottoming tap only after chamfer and plug taps have established the thread form, unless the full hole depth allows direct bottoming entry.\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\u003eChamfer Type\u003c\/strong\u003e: Bottoming\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: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-23\/32 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\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.6 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: K008385AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743124160818,"sku":"K008385AS","price":22.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ad65909331708c339f0b04b11a730b1f.jpg?v=1788842959","url":"https:\/\/voomisupply.com\/products\/hertel-k008385as-straight-flute-tap-5-16-18-unc-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}