NSN 5310-00-923-6931 · NIIN 009236931 · Part number 4M380
Caterpillar Inc Div Caterpillar Defense · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 11083
Government record, cited
NSN 5310-00-923-6931 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-923-6931. Manufacturer of record part number: 4M380.
Also searched as5310-00-923-6931 ·
5310009236931 ·
NIIN 009236931 ·
00-923-6931 ·
FSC 5310 Nuts and Washers · CAGE 11083 · 4M380 · 4M0380
Distance From Centerline to Inside of Prebent Key: 0.655 INCHES NOMINAL IN
Internal Prebent Key Width: 0.220 INCHES NOMINAL IN
Style Designator: KEY
Material Document and Classification: 1E166,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 2.120 INCHES NOMINAL IN
Material Thickness: 0.0478 INCHES NOMINAL IN
Internal Prebent Key Length: 0.120 INCHES NOMINAL IN
Identification
NSN: 5310-00-923-6931
NIIN: 009236931
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 4M380
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Washer,key, cataloged under National Stock Number 5310-00-923-6931, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 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
5310-00-923-6931
Primary Part Number
4M380
Item Name
Washer,key
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Caterpillar Inc Div Caterpillar Defense
Status
ACTIVE
Distance From Centerline to Inside of Prebent Key
0.655 INCHES NOMINAL IN
Internal Prebent Key Width
0.220 INCHES NOMINAL IN
Style Designator
KEY
Material Document and Classification
1E166,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL
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 5310-00-923-6931?
NSN 5310-00-923-6931 is a Washer,key, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-923-6931?
NSN 5310-00-923-6931 has 2 manufacturer part numbers on file: 4M0380 (Caterpillar Inc Div Caterpillar Defense), 4M380 (Caterpillar Inc Div Caterpillar Defense).
What are the specifications of 4M380?
Key specifications for 4M380: Distance From Centerline to Inside of Prebent Key: 0.655 INCHES NOMINAL IN; Internal Prebent Key Width: 0.220 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: 1E166,FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-923-6931 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.