NSN 5310-01-732-6402 · NIIN 017326402 · Part number 721-8545400-22
Naval Sea Systems Command · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5310-01-732-6402 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-732-6402. Manufacturer of record part number: 721-8545400-22.
Also searched as5310-01-732-6402 ·
5310017326402 ·
NIIN 017326402 ·
01-732-6402 ·
FSC 5310 Nuts and Washers · CAGE 53711 · 721-8545400-22 · LSA002677-22 · 741-8747922-238 · 721-8545400 · 741-8747922
The Washer,flat, cataloged under National Stock Number 5310-01-732-6402, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
Naval Sea Systems Command (CAGE 53711)
Technical Specifications
Parameter
Value
NSN
5310-01-732-6402
Primary Part Number
721-8545400-22
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Naval Sea Systems Command
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
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5310-01-732-6459721-8545404-27POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
5365-01-732-6548721-8545430-11POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Naval Sea Systems Command
5365-01-732-6569721-8545429-10POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Naval Sea Systems Command
3040-01-732-7163721-8545431-12POSSIBLE MATCH
COLLAR,SHAFT
Possible match (shared part number)Naval Sea Systems Command
3120-01-732-7180721-8545399-21POSSIBLE MATCH
BEARING,WASHER,THRUST
Possible match (shared part number)Naval Sea Systems Command
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
721-8545400
D/9Drawing number reference only
Naval Sea Systems Command
741-8747922
D/9Drawing number reference only
Naval Sea Systems Command
LOA041313-238
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
Related Parts
5310-01-732-6459POSSIBLE MATCH
WASHER,FLAT
721-8545404-27
5365-01-732-6548POSSIBLE MATCH
SPACER,PLATE
721-8545430-11
5365-01-732-6569POSSIBLE MATCH
SPACER,PLATE
721-8545429-10
3040-01-732-7163POSSIBLE MATCH
COLLAR,SHAFT
721-8545431-12
3120-01-732-7180POSSIBLE MATCH
BEARING,WASHER,THRUST
721-8545399-21
2040-01-733-2390POSSIBLE MATCH
HATCH,MARINE
Frequently Asked Questions
What is NSN 5310-01-732-6402?
NSN 5310-01-732-6402 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-732-6402?
NSN 5310-01-732-6402 has 2 manufacturer part numbers on file: 741-8747922-238 (Naval Sea Systems Command), 721-8545400-22 (Naval Sea Systems Command).
What NSN replaces 5310-01-732-6402?
6 possible matches (shared part number, not a government interchangeability claim): 5310-01-732-6459, 5365-01-732-6548, 5365-01-732-6569. Verify interchangeability with system specifications before substitution.
Is NSN 5310-01-732-6402 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.