P331A1

View detailed technical data, stock status, and sourcing information for: P331A1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-235-4186

Item Name Code

13393

Assigment Date

01/01/1963 (63 years ago)

round center hole shape style, 0.406 inches nominal hole diameter, 0.031 inches nominal thickness, round peripheral shape style, rectangular cross-sectional shape style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style: rectangular
Hole Diameter: 0.406 inches nominal
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.031 inches nominal
Overall Diameter: 0.687 inches nominal
Material: steel overall
Material Document And Classification: qq-s-775,type 1 fed spec single material response overall
Surface Treatment: zinc overall

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5330-00-007-2888	No Name Available	03/01/1978

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
P33-1	Flat Washer
P331A1	Flat Washer

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-00-235-4186?

The FSCG of the NSN 5310-00-235-4186 is 5310

Does the NSN 5310-00-235-4186 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-235-4186 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 5310-00-235-4186 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-235-4186 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 5310-00-235-4186 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963