Silicon Bronze Finished Hex Nuts are similar to low carbon steel in hardness but offer high resistance to corrosive environments such as sea water

5/8-11 x 16 Socket Cap Screw Alloy

9/32 x 12 High Speed Aircraft Bit

50 x 40 Socket Cap Screw 12

50 x 90 Socket Cap Screw 12

M24-3.00 x 130 Flat Socket Cap Screw 12.9 DIN 7991 Black Oxide 3/4-16 Flat Socket Cap Screws Alloy Silicon Bronze Finished Hex NutsM24 3. 00 x 130 Flat Socket Cap Screw 12. 9 DIN 7991 Black Oxide . Alloy Flat Socket Head Cap Screws from Brighton Best. Hardness of RC 38 43, meets or exceeds DIN 7991. Manufactured from heat treated alloy steel, 1960 series.