{"title":"US No. 303 Mandrel – Busch Stainless Steel Mandrel, Made in Germany","description":"\u003cp\u003eThe \u003cstrong\u003eUS No. 303\u003c\/strong\u003e is the American number for a mandrel with a 5 mm head (ISO size 050): a stainless steel carrier that mounts abrasive and polishing discs in the handpiece. Busch \u0026amp; Co. manufactures it in Germany as \u003cstrong\u003eBusch No. 303RS 050\u003c\/strong\u003e. Every US No. 303 on this page is a genuine Busch instrument and ships from our US warehouse.\u003c\/p\u003e\u003ch2\u003eWhich US No. 303 Do You Need?\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"border-collapse:collapse;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eUS No.\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eBusch No.\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eMaterial\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eCut\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eShank\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eBest for\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003ePack\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/stainless-steel-disc-mandrel-dental-bur-303rs-050-ra-pack-of-6\"\u003e303\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e303RS 050\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eStainless Steel\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e—\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eRA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eSlow-speed contra-angle\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/stainless-steel-disc-mandrel-dental-bur-303rs-050-hp-pack-of-6\"\u003e303\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e303RS 050\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eStainless Steel\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e—\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHP\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eStraight handpiece: laboratory and denture work\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp style=\"font-size:13px;\"\u003eRA (latch, 2.35 mm shank, contra-angle). HP (2.35 mm shank, straight handpiece). See the \u003ca href=\"\/pages\/busch-bur-size-chart\"\u003eBusch Bur Size Chart\u003c\/a\u003e for head and shank dimensions.\u003c\/p\u003e\u003ch2\u003eClinical Uses of the US No. 303\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing and polishing:\u003c\/strong\u003e carrying abrasive discs for contouring and polishing composite, acrylic and metal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparation:\u003c\/strong\u003e carrying separating discs in the laboratory.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAt 5 mm the No. 303 is a head sized for standard dental discs.\u003c\/p\u003e\u003ch2\u003eSpeed and Technique\u003c\/h2\u003e\u003cp\u003eFit only discs designed for the mandrel head, seat them fully, and run at the disc manufacturer’s speed; replace a mandrel whose head no longer holds a disc securely. Maximum recommended speeds for every Busch shape are in our \u003ca href=\"\/pages\/dental-bur-speed-chart\"\u003eDental Bur Speed Chart\u003c\/a\u003e, and reprocessing steps in the \u003ca href=\"\/pages\/dental-bur-sterilization-guide\"\u003eBur Sterilization Guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eMade in Germany by Busch \u0026amp; Co.\u003c\/h2\u003e\u003cp\u003eBusch \u0026amp; Co. has manufactured rotary instruments in Engelskirchen, Germany since 1905. Every instrument on this page is a genuine Busch product, precision-ground on a concentric shank under ISO-certified quality management and guaranteed to arrive free of manufacturing defects under our \u003ca href=\"\/pages\/warranty\"\u003eBusch arrival guarantee\u003c\/a\u003e.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Busch number for the US 303 mandrel?\u003c\/strong\u003e Busch No. 303RS 050 in RA, Busch No. 303RS 050 in HP.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRelated resources:\u003c\/strong\u003e \u003ca href=\"\/pages\/us-bur-numbers\"\u003eUS Bur Number Finder\u003c\/a\u003e · \u003ca href=\"\/pages\/bur-comparison-chart\"\u003eBur Comparison Chart\u003c\/a\u003e · \u003ca href=\"\/pages\/dental-bur-speed-chart\"\u003eSpeed Chart\u003c\/a\u003e · \u003ca href=\"\/pages\/dental-bur-glossary\"\u003eBur Glossary\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"stainless-steel-disc-mandrel-dental-bur-303rs-050-hp-pack-of-6","title":"US No. 303 Busch Stainless Steel Mandrel | Busch No. 303RS 050 – HP | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003estainless steel disc mandrel dental bur\u003c\/strong\u003e from Busch \u0026amp; Co. GmbH is a precision-engineered accessory designed to support disc-based rotary instruments in dental handpiece applications. Manufactured in Germany to exacting standards, this mandrel provides reliable retention and concentricity for disc attachments used across a range of dental procedures.\u003c\/p\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Disc Mandrel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel (Stainless)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank:\u003c\/strong\u003e HP (Handpiece)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS No.:\u003c\/strong\u003e 303\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Standard Classification:\u003c\/strong\u003e 330 104 603 391 050\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 6 pieces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003estainless steel disc mandrel dental bur\u003c\/strong\u003e is engineered to deliver consistent, stable performance during rotary procedures. Its stainless steel construction offers resistance to corrosion and the repeated sterilisation cycles required in clinical environments. The HP (straight handpiece) shank ensures broad compatibility with standard dental handpieces.\u003c\/p\u003e\u003cp\u003eAs a product of Busch \u0026amp; Co. GmbH's renowned German manufacturing heritage, this \u003cstrong\u003estainless steel disc mandrel dental bur\u003c\/strong\u003e reflects the quality and precision that dental professionals worldwide have come to rely upon. Each mandrel in the pack maintains tight tolerances to minimise vibration and ensure accurate disc positioning throughout the working stroke.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThis mandrel is suitable for use with appropriately sized disc instruments in restorative, laboratory, and technical dental applications. It is particularly valued where secure disc retention and controlled rotation are essential to the outcome of the procedure.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this mandrel use?\u003c\/strong\u003e This mandrel features an HP (straight handpiece) shank, compatible with standard straight handpiece connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many mandrels are included in one pack?\u003c\/strong\u003e Each pack contains 6 individual stainless steel disc mandrel dental bur units.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this product?\u003c\/strong\u003e The ISO Standard Classification is 330 104 603 391 050.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367832260894,"sku":"014877","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/303rs-base_06c39d33-185f-4cb2-85dd-f775a90e4fc5.png?v=1766500823"},{"product_id":"stainless-steel-disc-mandrel-dental-bur-303rs-050-ra-pack-of-6","title":"US No. 303 Busch Stainless Steel Mandrel | Busch No. 303RS 050 – RA | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003estainless steel disc mandrel dental bur\u003c\/strong\u003e from Busch \u0026amp; Co. GmbH is a precision-engineered instrument designed to securely hold and drive disc-type abrasives and cutting tools in the dental operatory. Manufactured in Germany to exacting standards, this mandrel delivers reliable performance across a wide range of clinical and laboratory applications.\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003estainless steel disc mandrel dental bur\u003c\/strong\u003e is classified under ISO standard 330 204 603 391 050 and is offered in a convenient pack of six, ensuring a ready supply for busy practices. The RA (right angle) shank configuration makes it compatible with standard contra-angle handpieces, providing a secure and stable connection during use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless steel construction for durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Disc mandrel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank:\u003c\/strong\u003e RA (right angle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Classification:\u003c\/strong\u003e 330 204 603 391 050\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 6 per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003estainless steel disc mandrel dental bur\u003c\/strong\u003e is suitable for mounting and driving separating discs, finishing discs, and similar rotary accessories. It is commonly used in restorative, prosthetic, and laboratory workflows where consistent rotational stability is essential.\u003c\/p\u003e\u003ch2\u003eWhy Choose Busch?\u003c\/h2\u003e\u003cp\u003eBusch \u0026amp; Co. GmbH has a long-standing reputation for producing high-quality rotary dental instruments. Each \u003cstrong\u003estainless steel disc mandrel dental bur\u003c\/strong\u003e undergoes rigorous quality control to meet the demands of modern dental professionals seeking precision, longevity, and clinical reliability.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat handpieces are compatible with this instrument?\u003c\/strong\u003e It has an RA (right angle, latch-type) shank, which fits standard slow-speed contra-angle handpieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many are included per pack?\u003c\/strong\u003e Each pack contains 6 mandrels.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is this instrument made?\u003c\/strong\u003e It is manufactured by Busch \u0026amp; Co. in Engelskirchen, Germany, an ISO 13485-certified specialist in rotary precision instruments since 1905.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367832752414,"sku":"014885","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/303rs-base_06d8b9a6-ef6e-4b0a-9087-614835e3faa0.png?v=1766500828"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/collections\/303rs-base_06d8b9a6-ef6e-4b0a-9087-614835e3faa0.png?v=1789481601","url":"https:\/\/deutschedt.com\/collections\/us-303-mandrel.oembed","provider":"Deutsche Dental Technologien","version":"1.0","type":"link"}