ASME Standard Fasteners

Bolts

Standard Fastener Type
B18.2.1 Hex Bolt, Hex Cap Screw, Hvy Hex Bolt, Square Bolt, Hex Lag Screw, Tap Bolt
B18.2.6 Hvy Hex Structural Bolt
B18.5 Carriage Bolt, Ribbed Neck Car Bolt, Elevator Bolt, T-Head Bolt
B18.9 No. 3 Head Plow Bolt, No.7 Head Plow Bolt
B18.10 Oval Neck Track Bolt, Elliptic Neck Track Bolt
B18.15 Eye Bolt
B18.6.2 Slotted Flat Head Cap Screws, Slotted Round Head Cap Screws, Slotted Fillister Head Cap Screws

Nuts

Standard Fastener Type
B18.2.2 Hex Nut, Hex Jam Nut, Hvy Hex Nut, Slotted Nut, Square Nut
B18.2.6 Structural Hvy Hex Nut
B18.6.X Wing Nut

Sockets

Standard Fastener Type
B18.3 Socket Head Cap Screw, Low Head Socket Cap Screw, Flat Head Socket Cap Screw, Button Head Socket Cap Screw, Socket Shoulder Bolt, Socket Set Screw, Hex Key
B18.6.2 Square Head Set Screw, Slotted Set Screw

Screws

Standard Fastener Type
B18.6.1 Wood Screws – All Head Styles and Drives
B18.6.3 Machine Screws – All Head Styles and Drives
B18.6.4 Tapping Screws/Sheet Metal Screws – All Head Styles and Drives, Round Head U-Drive Screws

Washers

Standard Fastener Type
B18.21.1 Standard Flat Washer, Type A, Type B
B18.22.1 Helical Spring Lock Washer, High-Collar Lock Washer, Internal Tooth Lock Washer, External Tooth Lock Washer, Countersunk External Tooth Lock Washer, Internal/External Lock Washer

Pins

Standard Fastener Type
B18.8.1 Clevis Pins, Cotter Pins
B18.22.1 Taper Pins, Dowel Pins, Grooved Pins, Spring Pins
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