{"product_id":"bspt-taps-british-standard-pipe-tapered-sutton","title":"BSPT TAPS BRITISH STANDARD PIPE TAPERED SUTTON","description":"\u003cp\u003eSutton Tools manufactures high-quality British Standard Pipe Taper (BSPT) thread taps designed for both light-duty maintenance and heavy-duty industrial production.\u003c\/p\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\n\u003cstrong\u003eThread Specification Breakdown\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"T286Pc\"\u003e\u003cstrong class=\"Yjhzub\"\u003e1\/8\" (Nominal Pipe Size):\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e This does \u003cstrong class=\"Yjhzub\"\u003enot\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e measure the actual physical outer diameter of the thread or the tap. It represents the standard nominal bore (inside diameter) of the pipe it is meant to fit. The actual outer diameter of a 1\/8\" BSPT male thread is roughly \u003cstrong class=\"Yjhzub\"\u003e9.73 mm (0.38 inches)\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e.\u003c!--TgQPHd||[]--\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"T286Pc\"\u003e\u003cstrong class=\"Yjhzub\"\u003e28 (Threads Per Inch \/ TPI):\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e This is the thread pitch. It means there are exactly 28 individual thread crests per inch of thread length.\u003c!--TgQPHd||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"T286Pc\"\u003e\u003cstrong class=\"Yjhzub\"\u003eBSPT (British Standard Pipe Taper):\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e This indicates the thread profile and form. It features a \u003cstrong class=\"Yjhzub\"\u003e55° V-thread angle\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e with rounded crests and roots. Crucially, the thread has a \u003cstrong class=\"Yjhzub\"\u003e1:16 taper\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e (it gets progressively wider toward the back of the tap). This taper creates a mechanical, interference-fit seal when mated with a female fitting.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\n\u003cstrong\u003eCritical Pre-Drill \u0026amp; Tapping Requirements\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003eBecause BSPT threads are tapered, preparing the hole correctly is vital to avoid binding the tap or stripping the threads:\u003c!--TgQPHd||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"T286Pc\"\u003e\u003cstrong class=\"Yjhzub\"\u003eRecommended Drill Bit Size:\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e Use an \u003cstrong class=\"Yjhzub\"\u003e8.40 mm\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e drill bit for a standard parallel hole before tapping.\u003c!--TgQPHd||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"T286Pc\"\u003e\u003cstrong class=\"Yjhzub\"\u003eThe Taper Factor:\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e Because the hole is parallel but the tap is tapered, the tap has to work much harder as it goes deeper. For the best results and longest tool life, use a \u003cstrong class=\"Yjhzub\"\u003e1:16 taper pipe reamer\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e after drilling but before tapping.\u003c!--TgQPHd||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"T286Pc\"\u003e\u003cstrong class=\"Yjhzub\"\u003eThread Sealant:\u003c!--TgQPHd||[]--\u003e\u003c\/strong\u003e Even though the tapered threads wedge together to block leaks, you must always use a thread sealant (like PTFE tape or pipe dope) during final assembly to fill minor microscopic voids.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sutton Tools","offers":[{"title":"1\/8 X 28","offer_id":47944954609858,"sku":"T4750973","price":96.6,"currency_code":"AUD","in_stock":false},{"title":"1\/4 X 19","offer_id":47944954642626,"sku":"T4751316","price":102.9,"currency_code":"AUD","in_stock":true},{"title":"3\/8 X 19","offer_id":47944954675394,"sku":"T4751666","price":162.75,"currency_code":"AUD","in_stock":false},{"title":"1\/2 X 14","offer_id":47944954708162,"sku":"T4752096","price":177.45,"currency_code":"AUD","in_stock":true},{"title":"3\/4 X 14","offer_id":47944954740930,"sku":"T4752644","price":219.45,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/6335\/8914\/files\/TAPMETRIC_20226602-ea09-499a-9faa-912b1e20ce27.png?v=1782180770","url":"https:\/\/www.srbindustrialsupplies.com\/products\/bspt-taps-british-standard-pipe-tapered-sutton","provider":"SRB INDUSTRIAL SUPPLY","version":"1.0","type":"link"}