PartsTable TECHNICAL DATA SHEET

NSN 5310-01-268-5580Government record, cited

Washer, Recessed5310-01-268-5580

NSN 5310-01-268-5580 · NIIN 012685580 · Part number 33-056182-02

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 26916

Government record, cited

NSN 5310-01-268-5580 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-268-5580. Manufacturer of record part number: 33-056182-02.

Also searched as 5310-01-268-5580 · 5310012685580 · NIIN 012685580 · 01-268-5580 · FSC 5310 Nuts and Washers · CAGE 26916 · 33-056182-02

Nearby stock numbers ← 5310-01-268-5579 Washer, Lock · 5310-01-268-5677 Nut, Plain, Hexagon →

5310-01-268-5580 — Nuts and Washers

Features

Washer,recessed — FSC 5310
Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator: RECESSED
Material Document and Classification: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 0.302 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
Material Thickness: 0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
Recess Diameter: 0.282 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN
Surface Treatment: PASSIVATE OVERALL

Identification

NSN: 5310-01-268-5580
NIIN: 012685580
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 33-056182-02
Manufacturer: Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple

General Description

The Washer,recessed, cataloged under National Stock Number 5310-01-268-5580, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-268-5580
Primary Part Number	33-056182-02
Item Name	Washer,recessed
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
Status	ACTIVE
Surface Treatment Document and Classification	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style Designator	RECESSED
Material Document and Classification	ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	0.302 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
Material Thickness	0.058 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
Recess Diameter	0.282 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN
Surface Treatment	PASSIVATE OVERALL
Material	STEEL COMP 303 OVERALL
Hole Diameter	0.138 INCHES NOMINAL IN
Recess Angle	100.0 DEGREES NOMINAL

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
33-056182-02 PRIMARY	Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)

Reference documents

Reference	Meaning
33-056182-02	3/9 Design control — primary reference Northrop Grumman Systems Corporation Div Es Defensive Systems Division

No interchangeability data on file.

Other items in FSC 5310 — Nuts and Washers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5310-00-000-0040

5310-00-000-0040 · Item name not on file

5310-00-000-0077

NUT,PLAIN,ROUND

5310-00-000-0079

WASHER,FLAT

5310-00-000-0079

WASHER,FLAT

5310-00-000-1146

5310-00-000-1146 · Item name not on file

5310-00-000-3815

5310-00-000-3815 · Item name not on file

5310-00-000-4532

5310-00-000-4532 · Item name not on file

5310-00-000-4540

5310-00-000-4540 · Item name not on file

Frequently Asked Questions

What is NSN 5310-01-268-5580?

NSN 5310-01-268-5580 is a Washer,recessed, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-268-5580?

NSN 5310-01-268-5580 has 1 manufacturer part number on file: 33-056182-02 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).

What are the specifications of 33-056182-02?

Key specifications for 33-056182-02: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED; Material Document and Classification: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.302 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-268-5580 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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