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5310-00-357-1981

Flat Washer

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Official Item Classification

Name
Flat Washer
(NSN) National Stock Number
5310-00-357-1981
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
13393
(FIIG) Federal Item Identification Guide
A022B0
Date
02/08/1974 (52 years ago)

0.310 inches minimum and 0.338 inches maximum hole diameter, rectangular cross-sectional shape style, rectangular peripheral shape style, round center hole shape style, 0.160 inches nominal thickness

Specs & Compatibility

Cross-Sectional Shape Style

rectangular

Hole Diameter

0.310 inches minimum and 0.338 inches maximum

Peripheral Shape Style

rectangular

Center Hole Shape Style

round

Thickness

0.160 inches nominal

Length

0.580 inches minimum and 0.640 inches maximum

Width Across Flats

0.580 inches minimum and 0.640 inches maximum

Special Features

0.06 in. radius all corners,0.160 in. radius one side of one end

Material

steel overall

Material Document And Classification

mil-s-5059 mil spec 1st material response or mil-s-6721 mil spec 2nd material response overall

Surface Treatment

passivate overall

Specification/Standard Data

80205-nas1401 professional/industrial association standard

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.

Source of Supply Code

SMS

Pseudo Item Name Code

0013393

Related Hardware Products

Part Number Description
NAS1401-5C5 Flat Washer

Frequently Asked Questions

What is the FSCG of the NSN 5310-00-357-1981?
The FSCG of the NSN 5310-00-357-1981 is 5310
Does the NSN 5310-00-357-1981 have a Schedule B code assigned?
Yes, the Schedule B code is 7318220000
Does NSN 5310-00-357-1981 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 5310-00-357-1981 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-357-1981 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 5310-00-357-1981 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Fri, Feb 8, 1974