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03A257C8A Recessed Washer

5310-01-304-8739

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Official Item Classification

Name
Recessed Washer
Part Number
03A257C8A
(NSN) National Stock Number
5310-01-304-8739
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
15933
(FIIG) Federal Item Identification Guide
A022B0
Date
07/28/1989 (37 years ago)

80.0 degrees minimum and 100.0 degrees maximum recess angle, 0.614 inches minimum and 0.624 inches maximum recess diameter, 0.922 inches minimum and 0.932 inches maximum outside diameter, 0.501 inches minimum and 0.505 inches maximum hole diameter, 0.071 inches minimum and 0.085 inches maximum material thickness

Specs & Compatibility

Hole Diameter

0.501 inches minimum and 0.505 inches maximum

Outside Diameter

0.922 inches minimum and 0.932 inches maximum

Recess Diameter

0.614 inches minimum and 0.624 inches maximum

Material Thickness

0.071 inches minimum and 0.085 inches maximum

Recess Angle

80.0 degrees minimum and 100.0 degrees maximum

Material

iron alloy 660 or nickel alloy 502 overall

Material Document And Classification

ams 5525 assn std 1st material response or ams 5737 assn std 1st material response or ams 5596 assn std 2nd material response or ams 5597 assn std 2nd material response or ams 5662 assn std 2nd material response overall

Surface Treatment

aluminum alloy overall

Surface Treatment Document And Classification

nas 4006 assn std single treatment response overall

Style Designator

recessed

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

0015933

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03A257C8A Recessed Washer
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Frequently Asked Questions

What is the FSCG of the NSN 5310-01-304-8739?
The FSCG of the NSN 5310-01-304-8739 is 5310
Does the NSN 5310-01-304-8739 have a Schedule B code assigned?
Yes, the Schedule B code is 7318220000
Does NSN 5310-01-304-8739 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 5310-01-304-8739 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-01-304-8739 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 5310-01-304-8739 was assigned to the Federal Catalog?
It was assigned 37 years ago, on Fri, Jul 28, 1989