Thread size listed - 3/8" UNF 24 TPI. Grade - 12.9 Self colour Steel High Tensile.
FALKIN SUS304 A2 Stainless Steel DIN933 Full Threaded Hex Bolts Hexagon Head Screws 1/4" 5/16" 3/8" 7/16" UNC UNF(1.0inch,3I8-24 UNF(3Pcs))
Professional Metal Chuck Drill Chuck 1.5 - 10mm, 3/8 x 24 UNF Thread, + Key
5/16"-24 UNF Thread Manifold Studs, ZINC Plated Inlet Exhaust 41 mm long 23-11-7
3/8-24" UNF IMPERIAL SOCKET BUTTON HEAD SCREWS A2 STAINLESS STEEL ALLEN BOLTS
5/16"-24 UNF Socket Button Head Bolts, Allen Key Drive, A2 Stainless Steel, 1/2" to 11/2" Long (10, 5/16 X 1 1/2")
5/16 - 24 TPI UNF ZINC 12.9 SOCKET CAP ALLEN BOLTS FULL THREAD HIGH TENSILE