标准号:IS 12692-1989
发布日期:1990/3/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This Indian standard covers dimensions and other requirements for the subland twist drills with parallel shanks for producing clearance holes and countersink for countersunk head screws M3 to M10 — Fine and medium series conforming to IS 1365 : 1978 'Slotted countersunk head screws (range 1.6 to 20 mm) (third revision )' and IS 3406 ( Part 1 ) : 1986 'Dimensions for countei-sinks and counterbores: Part 1 Countersinks ( second revision )'.