{"product_id":"inserto-per-maschiatura-in-cobalto-hsse-m4-44-10300","title":"HSSE M4 Cobalt Tapping Insert","description":"\u003cp\u003eCobalt HSSE Tapping Insert M4 — for threading steel, stainless steel, aluminum, and non-ferrous metals. Manufactured in Austria by Bernardo; Krollit has been an official distributor in Italy since 2007.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap diameter:\u003c\/strong\u003e M4 (Ø 4 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric thread pitch:\u003c\/strong\u003e 0.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e HSSE (high-speed steel with cobalt)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Bernardo TM and STG series tapping machines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e DIN 371 \/ DIN 376\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWorkable materials and limits\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eSuitable\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMild steel S235\/S275\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eStandard speed, no problems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless steel AISI 304\/316\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eReduce speed by 50%, abundant coolant\/lubricant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAluminum and alloys\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eMaximum speed, specific oil for aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCast iron\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eDry cutting or with compressed air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSteels over 1,000 N\/mm²\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eRequire specific carbide inserts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread size\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetric thread pitch\u003c\/td\u003e\n\u003ctd\u003e0.7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsert material\u003c\/td\u003e\n\u003ctd\u003eHSSE (high-speed cobalt steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eDIN 371 \/ DIN 376\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. material strength\u003c\/td\u003e\n\u003ctd\u003e800 N\/mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eLogistics\u003c\/h3\u003e\n\u003cp\u003eOriginal spare parts available with 3–5 business day shipping. Customer service available in Italian.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is an HSSE insert and how does it differ from standard HSS?\u003c\/summary\u003e\n\u003cp\u003eHSSE (High Speed Steel with Cobalt) is high-speed steel with added cobalt (5–8%). Cobalt increases hot hardness and wear resistance: HSSE inserts better withstand the temperatures generated by tapping tough materials such as AISI 304 stainless steel, chromium-molybdenum steels, and hard cast irons. On mild steel and aluminum, the difference compared to standard HSS is minimal; on stainless steel and hard materials, the lifespan can be 3–5 times longer.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this insert compatible with my Bernardo tapping machine?\u003c\/summary\u003e\n\u003cp\u003eBernardo HSSE inserts are compatible with TM and STG series tapping machines. Check your machine's spindle connection (GT 12 or GT 24) before purchasing. For compatibility confirmation, contact Krollit. Customer service available in Italian.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the correct speed for tapping with an HSSE insert?\u003c\/summary\u003e\n\u003cp\u003eOn mild steel S235: 10–15 m\/min. On AISI 304 stainless steel: 3–6 m\/min with abundant coolant\/lubricant. On aluminum: 15–25 m\/min. Peripheral speed is calculated: n (rpm) = (v × 1000) \/ (π × d). Always use coolant\/lubricant — HSSE inserts resist heat but wear faster without lubrication.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDelivery times?\u003c\/summary\u003e\n\u003cp\u003eOriginal spare parts available with 3–5 business day shipping. Customer service available in Italian.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":50714926842184,"sku":"44-10300","price":9.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Inserto-per-maschiatura-in-cobalto-HSSE-M4-44-10300-extra-big-16326-621.jpg?v=1750278696","url":"https:\/\/www.krollit.com\/products\/insert-for-tapping-in-cobalt-hsse-m4-44-10300","provider":"Krollit","version":"1.0","type":"link"}