NSN 5310-00-025-7770 · NIIN 000257770 · Part number 12738
Triumph Engine Control Systems Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 11599
Government record, cited
NSN 5310-00-025-7770 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-025-7770. Manufacturer of record part number: 12738.
Also searched as5310-00-025-7770 ·
5310000257770 ·
NIIN 000257770 ·
00-025-7770 ·
FSC 5310 Nuts and Washers · CAGE 11599 · 12738
Overall Diameter: 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
Material Document and Classification: AMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style: RECTANGULAR
Surface Treatment: PASSIVATE OVERALL
Peripheral Shape Style: ROUND
Material: STEEL COMP 302 OVERALL
Center Hole Shape Style: ROUND
Identification
NSN: 5310-00-025-7770
NIIN: 000257770
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 12738
Manufacturer: Triumph Engine Control Systems Llc
General Description
The Washer,flat, cataloged under National Stock Number 5310-00-025-7770, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5310-00-025-7770
Primary Part Number
12738
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Triumph Engine Control Systems Llc
Status
ACTIVE
Overall Diameter
0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
Material Document and Classification
AMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape Style
RECTANGULAR
Surface Treatment
PASSIVATE OVERALL
Peripheral Shape Style
ROUND
Material
STEEL COMP 302 OVERALL
Center Hole Shape Style
ROUND
Hole Diameter
0.200 INCHES MINIMUM AND 0.206 INCHES MAXIMUM IN
Thickness
0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
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.
1650-00-688-84771273-8POSSIBLE MATCH
SERVOCYLINDER
Possible match (shared part number)Parker Hannifin Corporation Div Hydraulic Systems Division
3655-01-064-946212738POSSIBLE MATCH
ASSEMBLY,SCABBARD
Possible match (shared part number)Provision, Inc. Dba Provision Inc
5340-01-579-3082POSSIBLE MATCH
BRACKET,MOUNTING
Possible match (shared part number)
5340-01-626-891112738POSSIBLE MATCH
BRACKET,MOUNTING
Possible match (shared part number)Aimpoint Inc Dba Aimpoint Inc
5305-01-733-237612738POSSIBLE MATCH
SCREW,MACHINE
Possible match (shared part number)Marco Seattle Inc Dba Marco
NSN 5310-00-025-7770 is a Washer,flat, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-00-025-7770?
NSN 5310-00-025-7770 has 1 manufacturer part number on file: 12738 (Triumph Engine Control Systems Llc).
What NSN replaces 5310-00-025-7770?
5 possible matches (shared part number, not a government interchangeability claim): 1650-00-688-8477, 3655-01-064-9462, 5340-01-579-3082. Verify interchangeability with system specifications before substitution.
What are the specifications of 12738?
Key specifications for 12738: Overall Diameter: 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN; Material Document and Classification: AMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PASSIVATE OVERALL. 9 specifications are documented in the U.S. Government catalog.
Is NSN 5310-00-025-7770 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.