BS 5221:1987

Dimensional and accuracy requirements for non-topping single start right handed and left handed hobs used in the manufacture of spur and helical gears in accordance with BS 436-2. Dimensional requirements apply to monobloc hobs only, however the accuracy requirements may be used for monobloc or inserted tooth hobs.Cross References:BS 436:Part 2BS 2519:Part 1BS 2519:Part 2 BS 4500:Part 1BS 5517