{"product_id":"import-bdna-20738-straight-flute-tap-5-16-18-unc-hss","title":"Import BDNA-20738 Straight Flute Tap 5\/16-18 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe IMPORT BDNA-20738 is a straight flute bottoming tap designed for cutting internal threads in through-holes and blind holes where full thread depth close to the bottom is required. Built from high-speed steel (HSS) with a gold oxide coating, this tap offers improved wear resistance and reduced friction during the cutting process. The 5\/16-18 UNC thread specification and H3 thread limit ensure accurate, consistent thread form for standard unified coarse-pitch applications. With 4 straight flutes and a right-hand thread direction, it is suited for use in conventional manual or machine tapping operations on ferrous and non-ferrous materials.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for general metalworking and maintenance applications where a 5\/16-18 UNC bottoming tap is required. The bottoming chamfer — typically 1 to 2 thread leads — allows threading to within a few threads of the bottom of a blind hole, making it a common choice for repair work, fabrication shops, and production tapping where full thread engagement depth is critical. It is appropriate for use in drill presses, tapping machines, or by hand with a tap wrench. The H3 thread limit suits a range of standard nut and fastener fits.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-18 UNC thread size with right-hand thread direction\u003c\/li\u003e\n  \u003cli\u003eBottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003e4 straight flutes for chip control in a variety of materials\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction for durability in manual and machine tapping\u003c\/li\u003e\n  \u003cli\u003eGold oxide coating reduces friction and improves tool life\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit for standard unified coarse-pitch fastener fits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 5\/16-18 UNC bottoming tap suitable for use with compatible tap wrenches, T-handle wrenches, and tapping heads that accept straight-shank taps of this size.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eTapping operations should be performed by a qualified machinist or maintenance technician familiar with thread cutting procedures. Always secure the workpiece and use the appropriate cutting fluid for the material being tapped to extend tool life and ensure clean thread form. Back the tap out periodically to clear chips, especially in blind holes. Inspect the tap for wear or damage before each use and do not apply excessive torque, which can cause tap breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\u003eThreads per Inch\u003c\/strong\u003e: 18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\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: Gold Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: IMPORT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: BDNA-20738\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IMPORT-GENERIC","offers":[{"title":"Default Title","offer_id":51723887509810,"sku":"BDNA-20738","price":17.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7e71964101d36ad99ee03976d9c27d87.jpg?v=1788609388","url":"https:\/\/voomisupply.com\/products\/import-bdna-20738-straight-flute-tap-5-16-18-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}