Left-Hand Threaded Nuts | McMaster-Carr

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1,016 Products

Hex Nuts

Standard Profile About Standard Profile

Left-Hand-Thread Hex Nuts

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

161 products

Thin Profile About Thin Profile

Left-Hand-Thread Thin-Profile Hex Nuts

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

208 products

Heavy Profile About Heavy Profile

Left-Hand-Thread Heavy-Profile Hex Nuts

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

6 products

Other Products

Lead Screw Nuts

Mate with lead screws to move components in a straight line

200 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

6 products

Turnbuckles

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

252 products

Coupling Nuts

Connect and extend threaded rods

7 products

Thread Adapters

Join threads of a different type, size, and gender

66 products

Weld Nuts

Weld to metal surfaces to add permanent threads

64 products

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

19 products

Lead Screw Nut Flanges

Pair with lead screw nuts to make custom flange nuts that move items along lead screws

18 products

Lead Screw Collars

Position components and limit travel along a lead screw

3 products

Ball Screws and Nuts

Internal ball bearings roll on screws for low friction when moving components at high speeds

4 products