NSN 5310-01-143-7424 · NIIN 011437424 · Part number 12509
Marco Seattle Inc Dba Marco · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 09608
Government record, cited
NSN 5310-01-143-7424 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-143-7424. Manufacturer of record part number: 12509.
Also searched as5310-01-143-7424 ·
5310011437424 ·
NIIN 011437424 ·
01-143-7424 ·
FSC 5310 Nuts and Washers · CAGE 09608 · 12509
Manufacturer of record: Marco Seattle Inc Dba Marco
Identification
NSN: 5310-01-143-7424
NIIN: 011437424
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 12509
Manufacturer: Marco Seattle Inc Dba Marco
General Description
The Washer,lock, cataloged under National Stock Number 5310-01-143-7424, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Marco Seattle Inc Dba Marco. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 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
Marco Seattle Inc Dba Marco (CAGE 09608)
Technical Specifications
Parameter
Value
NSN
5310-01-143-7424
Primary Part Number
12509
Item Name
Washer,lock
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Marco Seattle Inc Dba Marco
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 Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2815-01-297-139612509POSSIBLE MATCH
VALVE,POPPET,ENGINE
Possible match (shared part number)Westerbeke Corporation
4820-01-516-9542POSSIBLE MATCH
VALVE,FLOW CONTROL
Possible match (shared part number)
6640-01-530-208312509POSSIBLE MATCH
WEIGHT,METRIC
Possible match (shared part number)Rice Lake Weighing Systems, Inc.
NSN 5310-01-143-7424 is a Washer,lock, manufactured by Marco Seattle Inc Dba Marco, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-143-7424?
NSN 5310-01-143-7424 has 1 manufacturer part number on file: 12509 (Marco Seattle Inc Dba Marco).
What NSN replaces 5310-01-143-7424?
3 possible matches (shared part number, not a government interchangeability claim): 2815-01-297-1396, 4820-01-516-9542, 6640-01-530-2083. Verify interchangeability with system specifications before substitution.
Is NSN 5310-01-143-7424 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.