Washer, Flat5310-01-591-2022

NSN 5310-01-591-2022 · NIIN 015912022 · Part number 9900-06

Brennan Industries · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 5E240

Government record, cited

NSN 5310-01-591-2022 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-591-2022. Manufacturer of record part number: 9900-06.

Also searched as 5310-01-591-2022 · 5310015912022 · NIIN 015912022 · 01-591-2022 · FSC 5310 Nuts and Washers · CAGE 5E240 · 9900-06

Nearby stock numbers ← 5310-01-591-1744 Locking Hex Nut · 5310-01-591-2084 Washer, Shouldered →

5310-01-591-2022 — Nuts and Washers

Features

Washer,flat — FSC 5310
Overall Diameter: 0.937 INCHES NOMINAL IN
Cross-Sectional Shape Style: RECTANGULAR
Peripheral Shape Style: ROUND
Material: STEEL OVERALL
Center Hole Shape Style: ROUND
Hole Diameter: 0.682 INCHES NOMINAL IN
1 manufacturer part number on file

Identification

NSN: 5310-01-591-2022
NIIN: 015912022
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 9900-06
Manufacturer: Brennan Industries

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-591-2022, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Brennan Industries. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-591-2022
Primary Part Number	9900-06
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Brennan Industries
Status	ACTIVE
Overall Diameter	0.937 INCHES NOMINAL IN
Cross-Sectional Shape Style	RECTANGULAR
Peripheral Shape Style	ROUND
Material	STEEL OVERALL
Center Hole Shape Style	ROUND
Hole Diameter	0.682 INCHES NOMINAL IN

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
9900-06 PRIMARY	Brennan Industries (USA)

Frequently Asked Questions

What is NSN 5310-01-591-2022?

NSN 5310-01-591-2022 is a Washer,flat, manufactured by Brennan Industries, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-591-2022?

NSN 5310-01-591-2022 has 1 manufacturer part number on file: 9900-06 (Brennan Industries).

What are the specifications of 9900-06?

Key specifications for 9900-06: Overall Diameter: 0.937 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: BRITISH BONDED SEAL 9900 SERIES. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-591-2022 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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