THREAD FIT
THREAD FIT
(OP)
I have been asked to quote for 5/8" and 3/4" studbolts C/W 2 nuts - Hot Dip Galvanised finished.
I have offered standard studs with nuts tapped oversize to accommodate galvanising.
Customer has now added the following to their specification:
Studs shall be to tolerance class 8G before galvanising
Nuts may be re-tapped after galvanising to 5H.
I can't equate above tolerances to imperial threads, can someone advise if these tolerances are applicable to imperial diameters?
I have offered standard studs with nuts tapped oversize to accommodate galvanising.
Customer has now added the following to their specification:
Studs shall be to tolerance class 8G before galvanising
Nuts may be re-tapped after galvanising to 5H.
I can't equate above tolerances to imperial threads, can someone advise if these tolerances are applicable to imperial diameters?





RE: THREAD FIT
The class designation in your post are for metric threads, imperial threads are A and B
see link below:-
http://en.wikipedia.org/wiki/Unified_Thread_Standa...
RE: THREAD FIT
RE: THREAD FIT
Slight error in desertfox post. A & B designate external (screw) or internal (nut) threads. The 'numbers' given in the 'tolerance class' section of the link they give explains the class.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: THREAD FIT
better quoting them for a larger tolerance.
RE: THREAD FIT