Carbon Steel , Alloy Steel , Stainless Steel & Brass Steel.
 
4.6,    5,    5.8   ,8,    8.8,    10.9,    12.9,    A2,    A4,    B7,    B7M,    L7,    L7M,    B8,    B8M
 

Bolts:
Diameter: With head - 1/4"~ 3"(M6 ~ M80)
Without head - 1/4"~ 6"(M6 ~ M160)
Length: No Limited under M36
Screws:
Diameter: #2 ~ 5/16 (M2 ~ M8)
Length: 6.35mm ~ 400mm