1 1/2"-6 Nuts | McMaster-Carr

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96 Products

Hex Nuts

Standard Profile About Standard Profile

Hex Nuts

The most common hex nuts for fastening machinery and equipment

18 products

Left-Hand-Thread Hex Nuts

Tighten when turned to the left to prevent counterclockwise-moving parts from loosening

5 products

Thin Profile About Thin Profile

Thin-Profile Hex Nuts

About half the height of standard nuts to fit in spaces with low clearance

8 products

Left-Hand-Thread Thin-Profile Hex Nuts

Tighten when turned to the left to prevent counterclockwise-moving parts from loosening

4 products

Heavy Profile About Heavy Profile

Heavy-Profile Hex Nuts

About 10% wider and taller than standard nuts to handle heavier loads

8 products

Heavy-Profile Hex Nuts for High-Pressure Applications

Secure ASTM A193 screws and are wider and taller than standard nuts to handle heavier loads

1 product

Structural Heavy-Profile Hex Nuts

Secure ASTM A325 screws in structural joints, such as I-beams, columns, and joists

4 products

Thin-Heavy Profile About Thin-Heavy Profile

Thin-Heavy-Profile Hex Nuts

Fit in low-clearance spaces and handle heavier loads than standard nuts

4 products

Other Products

Locknuts

Hold fasteners in place to prevent loosening from vibration

19 products

Coupling Nuts

Connect and extend threaded rods

8 products

Split Nuts

Swivel to attach at any point on a threaded rod for quick installation

1 product

Square Nuts

Flat sides won’t spin in channels and square holes

2 products

Turnbuckles

Twist the body or end fittings to adjust the length and tension of attached rope and chain

2 products

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

3 products

Thread Adapters

Join threads of a different type, size, and gender

1 product

Threaded Inserts

Create new threads or repair stripped threads

5 products