- Joined
- Jan 31, 2016
- Messages
- 11,523
Not to disquade ( not sure if this a true word ) , you from the purchase of a Machinist Handbook , but try this . If you have a tap supplier you use regularly , ask them to provide you with a thread form and limit book . I have them from Greenfield and OSG . It will give you ALL your limits on 1-4 class ID and OD threads , pitch diameter limits , tap classes ( GH1-5) etc . Best thing is they are free and much easier to read than the handbook .