Washer, Flat5310-01-434-1372

NSN 5310-01-434-1372 · NIIN 014341372 · Part number WA1978

Ambac International Corporation Div Ambac International · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 01843

Government record, cited

NSN 5310-01-434-1372 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-434-1372. Manufacturer of record part number: WA1978.

Also searched as 5310-01-434-1372 · 5310014341372 · NIIN 014341372 · 01-434-1372 · FSC 5310 Nuts and Washers · CAGE 01843 · WA1978

Nearby stock numbers ← 5310-01-434-1371 Nut, Plain, Hexagon · 5310-01-434-1373 Nut, Plain, Hexagon →

5310-01-434-1372 — Nuts and Washers

Features

Washer,flat — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Ambac International Corporation Div Ambac International

Identification

NSN: 5310-01-434-1372
NIIN: 014341372
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: WA1978
Manufacturer: Ambac International Corporation Div Ambac International

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-434-1372, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ambac International Corporation Div Ambac International. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Washer,flat
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Ambac International Corporation Div Ambac International (CAGE 01843)

Technical Specifications

Parameter	Value
NSN	5310-01-434-1372
Primary Part Number	WA1978
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Ambac International Corporation Div Ambac International
Status	ACTIVE

Lifecycle & Compliance

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

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

2530-01-665-7775WA-1978 POSSIBLE MATCH

RIM,WHEEL,PNEUMATIC TIRE

Possible match (shared part number)Hutchinson Industries, Inc Div Defense and Industry

Cross-Reference Index

Part Number	Manufacturer
WA1978 PRIMARY	Ambac International Corporation Div Ambac International (USA)

Related Parts

2530-01-665-7775POSSIBLE MATCH

RIM,WHEEL,PNEUMATIC TIRE

WA-1978

Frequently Asked Questions

What is NSN 5310-01-434-1372?

NSN 5310-01-434-1372 is a Washer,flat, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-434-1372?

NSN 5310-01-434-1372 has 1 manufacturer part number on file: WA1978 (Ambac International Corporation Div Ambac International).

What NSN replaces 5310-01-434-1372?

1 possible match (shared part number, not a government interchangeability claim): 2530-01-665-7775. Verify interchangeability with system specifications before substitution.

Is NSN 5310-01-434-1372 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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