Unbrako catalogue
Page 77

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"Unbrako socket head cap screws", a 12-page catalogue published by Unbrako, illustrates and describes the company's line of socket head cap screws for high reliability applications.
Data are published for socket head cap screws of nominal thread sizes 8BA through OBA, BSW through 2in. BSW, ,;,in. BSF through 2in. BSF, and no 2 through 2in. UNC and UN F. The UNC and UNF threads are tabluated for both the 1936 and 1960 series screws; the BA, BSW and BSF threads for 1936 series only. Typical tightening torques are listed for each size. Other tables give information on grip lengths for various sizes up to 20/n. long.
Available from: Unbrako Ltd, PO Box 38, Burnaby Road, Cove'ntry CV6 4AE.