ISO metric screw threads - Specification for selected limits of size Ingestion-build-201039 2 Definition of Q-laboratories

2 Definition of Q-laboratories

for the purpose of this European Standard

It is the UK implementation of an international Technical Report

Owners and operators of built assets of all sizes and levels of complexity from individual buildings and portfolios of buildings (government and commercial) to infrastructure networks (rail

Planning of highly accelerated tests

ISO metric screw threads - Specification for selected limits of size Ingestion-build-201039 2 Definition of Q-laboratoriesThis British Standard, a part of the BS 3643 series, specifies the fundamental deviations, tolerances and limits of size for the tolerance classes 4H, 5H, 6H and 7H for internal threads (nuts) and 4h, 6g and 8g for external threads (bolts) where appropriate for: coarse pitch series within the range 1 mm to 68 mm diameter fine pitch series within the range 1 mm to 33 mm diameter constant pitch series within the range 8 mm to 300 mm diameter. For