PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3438Washer,flat

Triumph Engine Control Systems Llc · NSN 5310-00-291-8893 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-291-8893 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-291-8893. Primary manufacturer part number: 3438.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material Document and Classification: MIL-A-7021 CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.160 INCHES NOMINAL IN
  • Hole Diameter: 0.380 INCHES NOMINAL IN
  • Thickness: 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Asbestos Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-291-8893, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-291-8893
Primary Part Number3438
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusACTIVE
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Material Document and ClassificationMIL-A-7021 CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Center Hole Shape StyleROUND
Overall Diameter1.160 INCHES NOMINAL IN
Hole Diameter0.380 INCHES NOMINAL IN
Thickness0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
MaterialASBESTOS OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2825-00-146-0129D15-3950PC429T0431 INTERCHANGEABLE
Bucket Assembly
Northrop Grumman Systems Corporation Div Marine Systems
5120-00-242-3268034C INTERCHANGEABLE
Screwdriver,offset
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5315-00-341-88453438 INTERCHANGEABLE
Pin,drive,power Actuated
Illinois Tool Works Inc
2990-00-374-8564T-3438 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
3120-00-383-855617557 INTERCHANGEABLE
Bearing,sleeve
Mitsubishi Caterpillar Forklift America, Inc
2520-00-405-1728D3-1011C INTERCHANGEABLE
Shifter Collar
Astec Industries Inc Div Astec Ind.
5950-00-504-73813438 INTERCHANGEABLE
Transformer,power
Precision Electronics, Inc
5120-00-511-6065 INTERCHANGEABLE
Cable Puller
5310-00-805-6890 INTERCHANGEABLE
Washer,flat
7610-01-123-32253438 INTERCHANGEABLE
Sheet,technical
Honeywell International Inc. Dba Honeywell Div Aerospace -Olathe Hums Div
Cross-Reference Index
Part NumberManufacturer
3438 PRIMARY Triumph Engine Control Systems Llc (USA)
Related Parts
2825-00-146-0129INTERCHANGEABLE
BUCKET ASSEMBLY
D15-3950PC429T0431
5120-00-242-3268INTERCHANGEABLE
SCREWDRIVER,OFFSET
034C
5315-00-341-8845INTERCHANGEABLE
PIN,DRIVE,POWER ACTUATED
3438
2990-00-374-8564INTERCHANGEABLE
MUFFLER,EXHAUST
T-3438
3120-00-383-8556INTERCHANGEABLE
BEARING,SLEEVE
17557
2520-00-405-1728INTERCHANGEABLE
SHIFTER COLLAR
D3-1011C
5950-00-504-7381INTERCHANGEABLE
TRANSFORMER,POWER
3438
5120-00-511-6065INTERCHANGEABLE
CABLE PULLER
5310-00-805-6890INTERCHANGEABLE
WASHER,FLAT
7610-01-123-3225INTERCHANGEABLE
SHEET,TECHNICAL
3438
5998-01-239-7827INTERCHANGEABLE
EXTRACTOR,ELECTRICAL CARD
3438
5120-01-399-9188INTERCHANGEABLE
SCREWDRIVER,OFFSET
J343/8

Frequently Asked Questions

What is NSN 5310-00-291-8893?

NSN 5310-00-291-8893 is a Washer,flat, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-291-8893?

NSN 5310-00-291-8893 has 1 cross-referenced part number: 3438 (Triumph Engine Control Systems Llc).

What NSN replaces 5310-00-291-8893?

There are 12 known substitutes for 5310-00-291-8893: 2825-00-146-0129, 5120-00-242-3268, 5315-00-341-8845 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3438?

Key specifications for 3438: Peripheral Shape Style: ROUND; Cross-Sectional Shape Style: RECTANGULAR; Material Document and Classification: MIL-A-7021 CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Center Hole Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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