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40438A Flat Washer

5310-00-001-8109

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Official Item Classification

Name
Flat Washer
Part Number
40438A
(NSN) National Stock Number
5310-00-001-8109
(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
10/04/1972 (53 years ago)

round peripheral shape style, 0.046 inches minimum and 0.050 inches maximum thickness, rectangular cross-sectional shape style, 0.418 inches nominal hole diameter, round center hole shape style

Specs & Compatibility

Cross-Sectional Shape Style

rectangular

Hole Diameter

0.418 inches nominal

Peripheral Shape Style

round

Center Hole Shape Style

round

Thickness

0.046 inches minimum and 0.050 inches maximum

Overall Diameter

0.850 inches minimum and 0.865 inches maximum

Part Name Assigned By Controlling Agency

navy special project

Material

plastic polytetrafluoroethylene overall

Material Document And Classification

ams 3656 assn std single material response overall

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

0013393

Related Hardware Products

Part Number Description
40438A Flat Washer

Frequently Asked Questions

What is the FSCG of the NSN 5310-00-001-8109?
The FSCG of the NSN 5310-00-001-8109 is 5310
Does the NSN 5310-00-001-8109 have a Schedule B code assigned?
Yes, the Schedule B code is 3926904500
Does NSN 5310-00-001-8109 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 5310-00-001-8109 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-00-001-8109 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 5310-00-001-8109 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Wed, Oct 4, 1972