Filter by
Thread Size
Specifications Met
Material
Certification
Military Specification
Locking Type
Finish
Thread Type
System of Measurement
DFARS Specialty Metals
Hex Nut Profile
Thread Direction
Performance
Export Control Classification Number (ECCN)
Sold As
REACH
RoHS
Drive Style
Thread Spacing
Mil. Spec. Flex-Top Locknuts for Heavy Vibration
![]() |
These locknuts are manufactured and tested to strict U.S. military standards for material and construction. The top section expands to grip the screw on all sides for a stronger hold than both nylon-insert and distorted-thread locknuts. As a result, they're suitable for use in equipment with constant, vigorous vibration, such as engines. These locknuts are reusable a handful of times, but the holding power decreases with each use.
Corrosion-Resistant Stainless Steel
Silver-Plated 18-8 Stainless Steel—The choice for wet and outdoor environments, these locknuts won't rust. The silver plating adds lubricity to help them thread on smoothly during installation.
Thread Size | Wd. | Ht. | Mil. Spec. | Specs. Met | Pkg. Qty. | Pkg. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Silver-Plated 18-8 Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
10-32 | 3/8" | 15/64" | MS21046C3 | NASM21046 | 1 | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() Mil. Spec. Flex-Top Locknut for Heavy Vibration, Silver-Plated 18-8 Stainless Steel, 10-32 Thread Size, MS21046C3 Pack of 1Delivers tomorrow 7-9 am | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||