ASTM A194 Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both Grade Symbol: 2H Material: Carbon Chemical Requirements (Composition, %) C: ≥0.40 Mn: 1.00 P: ≤0.040 S: ≤0.050 Si: 0.40   Hardness Requirements Type Brinell Hardness Rockwell Hardness to 1-1/2 in. or…