NSN 5310-01-703-0003 · NIIN 017030003 · Part number 726-8838386-50
Naval Sea Systems Command · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5310-01-703-0003 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-703-0003. Manufacturer of record part number: 726-8838386-50.
Also searched as5310-01-703-0003 ·
5310017030003 ·
NIIN 017030003 ·
01-703-0003 ·
FSC 5310 Nuts and Washers · CAGE 53711 · 726-8838386-50 · LOA022279-50 · R5257864-50 · 726-8838386 · 60-28-6589
The Washer,lock, cataloged under National Stock Number 5310-01-703-0003, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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,lock
FSC / FSG
5310 — Nuts and Washers (FSG 53)
Manufacturers
Naval Sea Systems Command (CAGE 53711)
Technical Specifications
Parameter
Value
NSN
5310-01-703-0003
Primary Part Number
726-8838386-50
Item Name
Washer,lock
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5340-01-703-0017726-8838386-6POSSIBLE MATCH
ROD,STRAIGHT,HEADLESS
Possible match (shared part number)Naval Sea Systems Command
5305-01-703-0028726-8838386-11POSSIBLE MATCH
SCREW,MACHINE
Possible match (shared part number)Naval Sea Systems Command
5305-01-703-0109726-8838386-45POSSIBLE MATCH
SCREW,MACHINE
Possible match (shared part number)Naval Sea Systems Command
5305-01-703-0126726-8838386-43POSSIBLE MATCH
SETSCREW
Possible match (shared part number)Naval Sea Systems Command
4820-01-703-3652726-8838386-A6POSSIBLE MATCH
DECK BOX OPERATOR,VALVE
Possible match (shared part number)Naval Sea Systems Command
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
R5257864-50
5/2Secondary reference
U.S. Government activity
726-8838386
D/9Drawing number reference only
Naval Sea Systems Command
60-28-6589
C/1Advisory reference — outside the item-of-supply concept
U.S. Government activity
Related Parts
5340-01-703-0017POSSIBLE MATCH
ROD,STRAIGHT,HEADLESS
726-8838386-6
5305-01-703-0028POSSIBLE MATCH
SCREW,MACHINE
726-8838386-11
5305-01-703-0109POSSIBLE MATCH
SCREW,MACHINE
726-8838386-45
5305-01-703-0126POSSIBLE MATCH
SETSCREW
726-8838386-43
4820-01-703-3652POSSIBLE MATCH
DECK BOX OPERATOR,VALVE
726-8838386-A6
Frequently Asked Questions
What is NSN 5310-01-703-0003?
NSN 5310-01-703-0003 is a Washer,lock, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-703-0003?
NSN 5310-01-703-0003 has 1 manufacturer part number on file: 726-8838386-50 (Naval Sea Systems Command).
What NSN replaces 5310-01-703-0003?
5 possible matches (shared part number, not a government interchangeability claim): 5340-01-703-0017, 5305-01-703-0028, 5305-01-703-0109. Verify interchangeability with system specifications before substitution.
Is NSN 5310-01-703-0003 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.