{"product_id":"irwin-1911zr-bsp-pipe-tap-1-8-28-bspt-4-flute","title":"Irwin 1911ZR Bsp Pipe Tap 1\/8-28 Bspt 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe IRWIN 1911ZR is a straight-flute British Standard Pipe Taper tap designed for cutting internal BSPT threads in pipe fittings, valves, and threaded port connections. Built from carbon steel with a bright, uncoated finish, this tap cuts a 1\/8-28 BSPT thread profile using a right-hand, plug-chamfer geometry across four flutes. The plug chamfer provides a gradual thread lead-in suitable for through-hole and moderate-depth blind-hole applications. It is a standard tool for plumbers, pipefitters, and machinists working on low-pressure pipe systems that require British Standard tapered thread connections.\u003c\/p\u003e\u003cp\u003eThis tap is suited for residential and light commercial plumbing, instrumentation, and pneumatic applications where BSPT threaded fittings are specified. The 1\/8-28 size is commonly encountered in small-diameter pipe connections, sensor ports, and hydraulic or pneumatic manifold work. Because BSPT is a tapered thread standard used widely in international plumbing and fluid-power systems, this tap sees regular use in service and repair work on imported equipment as well as new fabrication requiring metric-adjacent thread forms.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/8-28 BSPT thread size for British Standard tapered pipe connections\u003c\/li\u003e\n\u003cli\u003e4-flute straight-flute design for controlled chip evacuation in ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides gradual thread engagement, reducing tap breakage risk\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction for standard clockwise tapping operation\u003c\/li\u003e\n\u003cli\u003eCarbon steel construction offers adequate hardness for general-purpose pipe tapping\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for use with standard tapping fluids\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 1\/8-28 BSPT internal threads in pipe fittings, valve bodies, manifolds, and threaded ports that require British Standard Pipe Taper thread form.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTapping operations should be performed by a qualified plumber, pipefitter, or machinist. Always secure the workpiece before tapping and use an appropriate cutting fluid to extend tap life and improve thread quality. Apply consistent, moderate pressure with periodic back-off strokes to break chips and prevent tap binding or breakage. Verify that the drilled pilot hole matches the correct tap drill diameter for 1\/8-28 BSPT before beginning the threading operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/8-28 BSPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: BSPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Type\u003c\/strong\u003e: Straight Flute\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Carbon 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: 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112806\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: IRWIN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1911ZR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IRWIN","offers":[{"title":"Default Title","offer_id":51541298086194,"sku":"1911ZR","price":58.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cf4f4841eaa5dc4da7fc3371aff9e233.jpg?v=1785871647","url":"https:\/\/voomisupply.com\/products\/irwin-1911zr-bsp-pipe-tap-1-8-28-bspt-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}