We-re nuts about bolts. Imperial, Unified & Metric.
1/4 BSF x 1 3/8 Gr R HT HEX BOLTS S/COL
Product Code: HHOBF0250137
Hex Head Bolts are available in various threads, materials & finishes. They have a plain portion under the head unlike a setscrew which is fully threaded.
from Kerridge Commercial Systems Ltd