GBP 57 HSS-E DIN 3 335 C 90° Countersink 90°, for stainless and acid-resistant steels Suitable for/ vc [m/min] ISO code N N N P P P P P H H H H H M M S K N ​ ​ ​ ​ ​ 15 0378 70 33 25 28 27 27 8 4 7 7 7 12 65 ● ○ 15 0389/​0393 53 40 35 55 30 25 15 12 18 13 13 30 42 ● ● ○ Countersink 90°, for stainless and acid-resistant steels ​ All countersinks have 3 cutting edges, radially relieved. Flutes are ground from solid. High-precision countersink, produced with tight manufacturing tolerances similar to DIN 335-C. 15 0393 – Three drive flats on the shank for use in a 3-jaw chuck. h9 15 0389/0393 – Special geometry with unequal spacing and matching cutting edge preparation. 15 0378 Newly developed AlTiCN coating especially for stainless steels. Relief ground Application: 15 0389/0393 – High-precision countersinks for chatter-free production of precise, round 90° countersunk surfaces. h9 15 0389 L ⌀ DC ⌀ DS h9 15 0393 External ⌀ 15 0378 15 0389 15 0393 smallest L ⌀ Ds for countersunk for countersunk 11M 11M 11M INOX Dc countersink ⌀ screws ISO 2009, screws DIN 7991 for holes from 2010, 7046, 7047 < 900 N High-precision High-precision f High-precision countersink countersink countersink with unequal spacing with unequal spacing and 3 drive flats ​ ​ ​ ​ ​ 15 0378 15 0389 mm 90° AlTiCN AlTiCN mm mm mm ​ ​ mm/rev. 15 0393 mm/rev. 15 4,3 eShop eShop eShop 1.3 40 4 M2 – 0.08 0.1 5 eShop – – 1.5 40 4 M2.5 – 0.08 – 6 eShop eShop eShop 1.5 45 5 M3 – 0.1 0.1 6,3 eShop eShop eShop 1.5 45 5 – M3 0.1 0.1 7 eShop – – 1.8 50 6 M3.5 – 0.1 – 8 eShop eShop eShop 2 50 6 M4 – 0.1 0.1 8,3 eShop eShop eShop 2 50 6 – M4 0.1 0.1 10 eShop eShop eShop 2.5 50 6 M5 – 0.12 0.1 10,4 eShop eShop eShop 2.5 50 6 – M5 0.12 0.1 11,5 eShop eShop eShop 2.8 56 8 M6 – 0.12 0.1 12,4 eShop eShop eShop 2.8 56 8 – M6 0.12 0.1 15 eShop eShop eShop 3.2 60 10 M8 – 0.12 0.12 16,5 eShop eShop eShop 3.2 60 10 – M8 0.14 0.12 19 eShop eShop eShop 3.5 63 10 M10 – 0.14 0.12 20,5 eShop eShop eShop 3.5 63 10 – M10 0.16 0.14 23 eShop – – 3.8 67 10 M12 – 0.16 – 25 eShop eShop eShop 3.8 67 10 – M12 0.18 0.2 31 eShop eShop eShop 4.2 71 12 – M16 0.18 0.24 Countersink sets 90°, for stainless and acid-resistant steels ​ h9 Countersink sets, in a case. Practical set for assembly and workshop use. Application: 15 0391/0394 – High-precision countersinks for chatter-free production of precise, round 90° countersunk surfaces. Note: Size 7 – Supplied in a case No. 150370 size 6. Number of countersinks 6 7 17 Countersink set No. 150378 in a case 15 0381 11M eShop eShop eShop 90° Countersink set No. 150389 in a case 15 0391 11M AlTiCN eShop eShop – 15 0391 90° Countersink set No. 150393 with 3 drive flats, in a case 15 0394 11M AlTiCN eShop eShop – 90° Content: Size 6; 8; 10; Size 6; 8; 10; Size 4.3; 5; 6; 6.3; 7; 8; 8.3; 10; 10.4; 1× each precision countersink 11.5; 15; 19 11.5; 15; 19; 25 11.5; 12.4; 15; 16.5; 19; 20.5; 23; 25 207