Technical Reference Material ASTM A193 Grade B7 - UNC (Torque Guide) ASTM A307 ASTM A354 Grade BD ASTM 449 and ASTM A490 ASTM Specifications Black Oxide Taps and Dies Bolt Grade Markings and Strength Chart Bolt Strength Requirements by Grade Butterfly Valves Finished Hex Nuts Flat Washers ASTM Grade and Material Identification Markings H-13 Flange Bolting Heavy Hex Nuts Imperial vs. Metric Technical Guide Proof Load Tensile Strength for Grade 2, 5, 8 SAE Grade 2 and ASTM A325 Tap and Drill Bit Selection Guide Tap End Note Sheet Thread Pitch Chart
