Mil. Spec. Locknuts | McMaster-Carr

Filter by

Military Specification

Specifications Met

System of Measurement

Thread Size

Nut Type

Material

Locking Type

Height

Finish

Cadmium Yellow-Chromate Plated

Passivated

Silver Plated

Zinc Plated

Zinc Yellow-Chromate Plated

Certification

Hex Nut Profile

Width

Thread Type

Thread Fit

Unified Standard Class 2A

Unified Standard Class 3A

Unified Standard Class 3B

Performance

Flange Diameter

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Insert Maximum Temperature

Thread Direction

REACH

RoHS

Export Control Classification Number (ECCN)

Screw Size

Flange Thickness

Drive Style

Thread Spacing

465 Products

Locknuts

Nylon-Insert Locking About Nylon-Insert Locking

Mil. Spec. Nylon-Insert Locknuts

Meet strict U.S. military standards for material and construction

21 products

Mil. Spec. Thin-Profile Nylon-Insert Locknuts

Meet U.S. military standards and are half the height of standard nuts to fit in low-clearance spaces

17 products

Flex-Top Locking About Flex-Top Locking

Mil. Spec. Flex-Top Locknuts for Heavy Vibration

Meet strict U.S. military standards for material and construction

18 products

Other Products

Flange Nuts

The flange distributes pressure, so you don't need a washer

33 products

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

24 products

Lock Washers

Resist vibration to prevent fasteners from loosening

137 products

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

165 products

Flat Head Screws

Fit in countersunk holes for a flush finish

40 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

10 products