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5310-01-727-5488

Extended Washer Self-Locking Nut

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Official Item Classification

Name
Extended Washer Self-Locking Nut
(NSN) National Stock Number
5310-01-727-5488
(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
03/08/2025 (1 year ago)

right-hand thread direction, prevailing torque all metal design locking feature, 3b thread class, 0.251 inches minimum and 0.266 inches maximum overall height, 0.520 inches maximum washer outside diameter

Specs & Compatibility

Thread Class

3b

Thread Direction

right-hand

Locking Feature

prevailing torque all metal design

Washer Outside Diameter

0.520 inches maximum

Overall Height

0.251 inches minimum and 0.266 inches maximum

Nut Style

hexagon

Washer Thickness

0.023 inches minimum

Width Across Flats

0.367 inches minimum and 0.378 inches maximum

Thread Series

unjf

Thread Quantity Per Inch

24

Nominal Thread Size

0.3125 inches

Material

steel corrosion resisting overall

Material Document And Classification

ams5525,ams5731,ams5732,ams5737,ams5853 national std single material response overall

Precious Material And Location

plated finish silver

Precious Material

silver

Surface Treatment

silver overall

Surface Treatment Document And Classification

ams2410 national std single treatment response overall

Specification/Standard Data

80205-nas-21043 professional/industrial association standard

Regulatory Compliance

Precious Metals Indicator
S

Item contains silver.

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

Related Hardware Products

Part Number Description
MS21043-5N Extended Washer Self-Locking Nut

Frequently Asked Questions

What is the FSCG of the NSN 5310-01-727-5488?
The FSCG of the NSN 5310-01-727-5488 is 5310
Does the NSN 5310-01-727-5488 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-01-727-5488 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 5310-01-727-5488 contain precious materials?
Item contains silver.
Does NSN 5310-01-727-5488 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 5310-01-727-5488 was assigned to the Federal Catalog?
It was assigned 1 year ago, on Sat, Mar 8, 2025