Hexagon Self-locking Nut

Model / MPN: 661639 | NSN: 5310-00-168-2978

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Product Details

NATO Stock Number

5310-00-168-2978

Sold in multiples of

100 EA

DEMIL

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Nut Style

Internal or external wrenching hexagon

Nut Height

0.188 inches

Width Across Flats

Between 0.365 inches and 0.377 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Hardness Rating

Between 38.0 rockwell c and 48.0 rockwell c

Thread Size

0.190 inches

Bearing Surface Type

Chamfered

Material

Iron alloy 660

Material Specification

Ams 5525 assn standard single material response

Precious Material And Location

External surfaces silver

Surface Treatment

Silver

Surface Treatment Specification

Ams 2411 assn standard single treatment response

66163 Series Parts

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

661639 Cross Reference

661640
540625
661641
661642
H49044-3
661640
661640
H49044-3
H31-3