{"product_id":"value-collection-jy4848123-hand-tap-7-8-18-uns-hss","title":"Value Collection JY4848123 Hand Tap 7\/8-18 Uns Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION JY4848123 is a straight-flute hand tap designed for cutting 7\/8-18 UNS internal threads in metalworking applications. Built from high speed steel (HSS) with a bright, uncoated finish, this tap delivers reliable performance across a range of ferrous and non-ferrous materials. The plug chamfer, with its moderate lead-in angle, makes it well-suited for through-hole tapping where partial thread engagement at entry is acceptable. With 4 flutes and a right-hand thread direction, this tap is a standard choice for machinists, maintenance technicians, and tool-and-die professionals working in production or repair environments.\u003c\/p\u003e\u003cp\u003eThis tap is used in applications requiring a 7\/8-18 UNS thread form, a fine-pitch designation less common than unified coarse or fine series threads. It fits typical hand-tapping operations with a tap wrench or T-handle, and is appropriate for use in machine tapping setups running at conservative speeds without coolant-through capability. The 4-11\/16 inch overall length provides adequate reach for standard through-hole and shallow blind-hole work in a shop or field environment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7\/8-18 UNS thread form for fine-pitch unified national special applications\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides moderate lead-in, suited for through-hole tapping\u003c\/li\u003e\n\u003cli\u003e4-flute straight-flute geometry for chip clearance in a range of materials\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction offers durability across common workpiece materials\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish — no additional coating to affect dimensional tolerance\u003c\/li\u003e\n\u003cli\u003eH3 thread limit for close tolerance control on finished thread diameter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in any application requiring a 7\/8-18 UNS right-hand internal thread; compatible with standard tap wrenches and machine tap holders accepting straight-shank taps of this size.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists or maintenance technicians using a calibrated tap wrench or machine tapping setup. Secure the workpiece firmly before tapping and ensure the pilot hole is drilled to the correct tap drill diameter for a 7\/8-18 thread. Apply cutting fluid appropriate for the workpiece material to reduce heat and extend tool life. Reverse the tap periodically during hand tapping to break chips and prevent tap breakage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/8-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNS\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: H3\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: 4-11\/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: 0.5 pounds\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: JY4848123\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51695106588978,"sku":"JY4848123","price":149.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/16bb098f9401d68514d5b4b36e4b2553.jpg?v=1788331362","url":"https:\/\/voomisupply.com\/products\/value-collection-jy4848123-hand-tap-7-8-18-uns-hss","provider":"Voomi Supply","version":"1.0","type":"link"}