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5310-00-721-5521

Clinch Self-Locking Nut

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Official Item Classification

Name
Clinch Self-Locking Nut
(NSN) National Stock Number
5310-00-721-5521
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
15892
(FIIG) Federal Item Identification Guide
A021A0
Date
01/01/1963 (63 years ago)

prevailing torque all metal design locking feature, 3b thread class, 0.085 inches nominal pilot length, right-hand thread direction, 0.187 inches minimum and 0.191 inches maximum pilot diameter

Specs & Compatibility

Thread Class

3b

Thread Direction

right-hand

Locking Feature

prevailing torque all metal design

Pilot Diameter

0.187 inches minimum and 0.191 inches maximum

Pilot Length

0.085 inches nominal

Counterbore Diameter

0.139 inches minimum and 0.144 inches maximum nut

Nut Style

clinch

Nut Height

0.215 inches minimum and 0.245 inches maximum

Nut Counterbore Depth

0.075 inches nominal nut

Width Across Flats

0.243 inches minimum and 0.251 inches maximum

Temp Rating

450.0 fahrenheit nominal

Thread Series

unjc

Thread Quantity Per Inch

40

Nominal Thread Size

0.112 inches

Material

steel corrosion resisting overall

Surface Treatment

passivate overall

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0015892

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Frequently Asked Questions

What is the FSCG of the NSN 5310-00-721-5521?
The FSCG of the NSN 5310-00-721-5521 is 5310
Does the NSN 5310-00-721-5521 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-00-721-5521 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5310-00-721-5521 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-721-5521 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5310-00-721-5521 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963