Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) - Diameters ¼ in and over Ingestion-build-190310 fluctuating

fluctuating

• Fasteners and fixings

industrial process

This part of PD 6682 gives guidance on the use of BS EN 13450 in the UK

Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) - Diameters ¼ in and over Ingestion-build-190310 fluctuating1 Scope This British Standard comprises three sections: Section 1, which specifies limits of size for tapped holes to accommodate wire thread inserts to provide thread sizes from in to 1 in UNC inclusive and from in to1in UNF inclusive; Section 2, which recommends screwing taps intended to produce holes to the limits of size specified in Section 1; Section 3, which gives a recommended gauging system for checking the tapped holes. Figure 1 Basic form