PartsTable TECHNICAL DATA SHEET

NSN 5310-01-449-6986Government record, cited

Washer, Flat5310-01-449-6986

NSN 5310-01-449-6986 · NIIN 014496986 · Part number 255721 PIECE 50

Huntington Ingalls Inc Div Newport News Shipbuilding · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 43689

Government record, cited

NSN 5310-01-449-6986 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-449-6986. Manufacturer of record part number: 255721 PIECE 50.

Also searched as 5310-01-449-6986 · 5310014496986 · NIIN 014496986 · 01-449-6986 · FSC 5310 Nuts and Washers · CAGE 43689 · 255721 PIECE 50 · 255722 PIECE 50 · FF-W-92 · 255722 PIECE 50

Nearby stock numbers ← 5310-01-449-6985 Washer, Flat · 5310-01-449-7326 Nut, Plain, Hexagon →

5310-01-449-6986 — Nuts and Washers

Features

Washer,flat — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Huntington Ingalls Inc Div Newport News Shipbuilding

Identification

NSN: 5310-01-449-6986
NIIN: 014496986
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 255721 PIECE 50
Manufacturer: Huntington Ingalls Inc Div Newport News Shipbuilding

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-449-6986, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-449-6986
Primary Part Number	255721 PIECE 50
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Huntington Ingalls Inc Div Newport News Shipbuilding
Status	ACTIVE

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
255721 PIECE 50 PRIMARY	Huntington Ingalls Inc Div Newport News Shipbuilding (USA)

Reference documents

Reference	Meaning
255722 PIECE 50	5/9 Secondary reference Target Electronics Inc.
FF-W-92	4/1 Identification reference U.S. Government activity
255722 PIECE 50	5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding

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 5310-01-449-6986?

NSN 5310-01-449-6986 is a Washer,flat, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-449-6986?

NSN 5310-01-449-6986 has 1 manufacturer part number on file: 255721 PIECE 50 (Huntington Ingalls Inc Div Newport News Shipbuilding).

What are the specifications of 255721 PIECE 50?

Key specifications for 255721 PIECE 50: Part Name Assigned by Controlling Agency: WASHER, FLAT. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-449-6986 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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