Washer, Shouldered5310-01-644-8979

NSN 5310-01-644-8979 · NIIN 016448979

FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5310-01-644-8979 · 5310016448979 · NIIN 016448979 · 01-644-8979 · FSC 5310 Nuts and Washers

Nearby stock numbers ← 5310-01-644-8972 Nut, Plain, Hexagon · 5310-01-644-9011 Washer, Flat →

5310-01-644-8979 — Nuts and Washers

Features

Washer,shouldered — FSC 5310
Bottom Recess Diameter: 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Style Designator: RECESSED
Material Document and Classification: POLYTETRAFLUOROETHYLENE (PTFE) EXTRUSIONS, PREMIUM STRENGTH, SINTERED AND STRESS-RELIEVED PER AMS 3659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 0.575 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
Recess Depth: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
Recess Diameter: 0.400 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL

Identification

NSN: 5310-01-644-8979
NIIN: 016448979
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,shouldered, cataloged under National Stock Number 5310-01-644-8979, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	5310-01-644-8979
Item Name	Washer,shouldered
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Bottom Recess Diameter	0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Style Designator	RECESSED
Material Document and Classification	POLYTETRAFLUOROETHYLENE (PTFE) EXTRUSIONS, PREMIUM STRENGTH, SINTERED AND STRESS-RELIEVED PER AMS 3659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	0.575 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN
Recess Depth	0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN
Recess Diameter	0.400 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
Material	PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
Hole Diameter	0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM 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

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
2006T13P01	3/2 Design control — primary reference U.S. Government activity

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 5310-01-644-8979?

NSN 5310-01-644-8979 is a Washer,shouldered, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-644-8979?

Key specifications for 5310-01-644-8979: Overall Height: 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Bottom Recess Diameter: 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Style Designator: RECESSED; Material Document and Classification: POLYTETRAFLUOROETHYLENE (PTFE) EXTRUSIONS, PREMIUM STRENGTH, SINTERED AND STRESS-RELIEVED PER AMS 3659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-644-8979 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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