Washer, Key5310-01-529-2491

NSN 5310-01-529-2491 · NIIN 015292491 · Part number MT22 1187

Marmon-Herrington Company · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 27188

Government record, cited

NSN 5310-01-529-2491 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-529-2491. Manufacturer of record part number: MT22 1187.

Also searched as 5310-01-529-2491 · 5310015292491 · NIIN 015292491 · 01-529-2491 · FSC 5310 Nuts and Washers · CAGE 27188 · MT22 1187 · 1002290 · MAS12699

Nearby stock numbers ← 5310-01-529-2429 Nut, Plain, Extended Washer, Hexago · 5310-01-529-2555 Nut, Plain, Castellated, Hexagon →

5310-01-529-2491 — Nuts and Washers

Features

Washer,key — FSC 5310
3 manufacturer part numbers on file
Manufacturer of record: Marmon-Herrington Company

Identification

NSN: 5310-01-529-2491
NIIN: 015292491
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: MT22 1187
Manufacturer: Marmon-Herrington Company

General Description

The Washer,key, cataloged under National Stock Number 5310-01-529-2491, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Marmon-Herrington Company. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-529-2491
Primary Part Number	MT22 1187
Item Name	Washer,key
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Marmon-Herrington Company
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
1002290	General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
MT22 1187 PRIMARY	Marmon-Herrington Company (USA)
MAS12699	Np Aerospace Limited (GBR)

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 5310-01-529-2491?

NSN 5310-01-529-2491 is a Washer,key, manufactured by Marmon-Herrington Company, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-529-2491?

NSN 5310-01-529-2491 has 3 manufacturer part numbers on file: 1002290 (General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp), MT22 1187 (Marmon-Herrington Company), MAS12699 (Np Aerospace Limited).

What are the specifications of MT22 1187?

Key specifications for MT22 1187: Special Features: THIS GOES ON THE BRAKE SHOE ASSYEMBLY (MT22/R ONLY); NHA GENERIC NAME IS BRAKE MT22/R/N/H; Part Name Assigned by Controlling Agency: WEAR INDICATION DISK; End Item Identification: MRAP - UNIQUE NSN - USED ON 4 MRAP VARIANTS. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-529-2491 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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