Cite
MLA Citation
British Standards Institution,. Bolts, large bihexagonal head, close tolerance normal shank, medium length thread, in heat resisting nickel base alloy, passivated. Classification: 1550 MPa (at ambient temperature) /315°C.. London : British Standards Institution, 1996. http://access.bl.uk/ark:/81055/vdc_100104599124.0x000001