2 1/2"-4 Nuts | McMaster-Carr

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Unified Standard Class 2B

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40,000 psi to 99,999 psi

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18 Products

Hex Nuts

Standard Profile About Standard Profile

Hex Nuts

The most common hex nuts for fastening machinery and equipment

1 product

Thin Profile About Thin Profile

Thin-Profile Hex Nuts

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

1 product

Heavy Profile About Heavy Profile

Heavy-Profile Hex Nuts

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

2 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

1 product

Other Products

Lead Screw Nuts

Mate with lead screws to move components in a straight line

6 products

Lead Screws

Pair with lead screw nuts to move components in a straight line

6 products