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5310-01-445-0770

Extended Washer Self-Locking Nut

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Official Item Classification

Name
Extended Washer Self-Locking Nut
(NSN) National Stock Number
5310-01-445-0770
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
29730
(FIIG) Federal Item Identification Guide
A021A0
Date
05/23/1997 (29 years ago)

3b thread class, prevailing torque all metal design locking feature, 0.505 inches minimum and 0.515 inches maximum washer outside diameter, right-hand thread direction, dry film lubricant lubrication

Specs & Compatibility

Thread Class

3b

Thread Direction

right-hand

Locking Feature

prevailing torque all metal design

Washer Outside Diameter

0.505 inches minimum and 0.515 inches maximum

Lubrication

dry film lubricant

Overall Height

0.292 inches maximum

Nut Style

hexagon

Washer Thickness

0.113 inches minimum and 0.123 inches maximum

Width Across Flats

0.305 inches minimum and 0.313 inches maximum

Thread Series

unjf

Thread Quantity Per Inch

28

Nominal Thread Size

0.250 inches

Material

iron alloy 660 overall

Material Document And Classification

ams 5525 assn std 1st material response or ams 5737 assn std 2nd material response washer

Material Document And Classification

ams 5737 assn std single material response nut

Material Document And Classification

ams 5737 assn std single material response overall

Surface Treatment

anodize nut

Surface Treatment

disulfide molybdenum washer

Surface Treatment Document And Classification

qq-p-35 fed spec single treatment response washer

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

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

0029730

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Frequently Asked Questions

What is the FSCG of the NSN 5310-01-445-0770?
The FSCG of the NSN 5310-01-445-0770 is 5310
Does the NSN 5310-01-445-0770 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-01-445-0770 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 5310-01-445-0770 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-01-445-0770 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 5310-01-445-0770 was assigned to the Federal Catalog?
It was assigned 29 years ago, on Fri, May 23, 1997