Most recent
BS 2A 226:2019
Aerospace series. Specification for Bolts, Hexagonal head, Unified short threads below .250 inch, Alloy steel, Cadmium plated. Classification: Rm = 124 000 - 146 000 lbf/in2 (855 - 1 007 MPa) at ambient temp | +190 ºC. Specification (British Standard)
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British Standards Institution [bsi]