Heavy-Profile Flex-Top Locknut
for Heavy Vibration, Cadmium-Plated Steel, 1/4"-20 Thread Size
Thread Direction | Right Hand |
Hex Nut Profile | Heavy |
Locking Type | Flex-Top |
Finished Material | Cadmium-Plated Steel |
Thread Size | 1/4"-20 |
Width | 1/2" |
Height | 19/64" |
Drive Style | External Hex |
Nut Type | Hex, Locknut |
Performance | Heavy Vibration Resistant |
System of Measurement | Inch |
Thread Fit | Unified Standard Class 2B |
Thread Spacing | Coarse |
Thread Type | UNC |
Country of Origin | China, Taiwan, United States |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | Not Compliant |
RoHS Compliance | Not Compliant |
Schedule B Number | 731816.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
About 10% wider and taller than standard flex-top nuts, these handle heavier loads by distributing them over a larger area. 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.
Steel—These locknuts have equivalent strength to Grade 8 and Class 10 steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.
Cadmium-Plated Steel—These locknuts have good lubricity to thread on smoothly and ease installation. The plating also creates a barrier against rust that's comparable to zinc-yellow-chromate plating.
The information in this 3-D model is provided for reference only.