PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4902Washer,flat

Triumph Engine Control Systems Llc · NSN 5310-00-274-8493 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-274-8493 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-274-8493. Primary manufacturer part number: 4902.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material Document and Classification: AMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Center Hole Shape Style: ROUND
  • Material: STEEL COMP 302 OVERALL
  • Overall Diameter: 0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
  • Thickness: 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-274-8493, 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
NSN5310-00-274-8493
Primary Part Number4902
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusACTIVE
Hole Diameter0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Material Document and ClassificationAMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Center Hole Shape StyleROUND
MaterialSTEEL COMP 302 OVERALL
Overall Diameter0.430 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
Thickness0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-395-47384902 INTERCHANGEABLE
Seal,plain
Johns Manville Intl
5905-00-448-26014902 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Electro Scientific Industries Inc
5330-00-521-61044902 INTERCHANGEABLE
Seal,plain Encased
Proactive Components Inc Dba Proactive Components Inc
2520-00-773-5974 INTERCHANGEABLE
Shaft Pump Drive
5930-00-943-0260 INTERCHANGEABLE
Switch,toggle
5998-01-010-08774902 INTERCHANGEABLE
Circuit Card Assembly
Electro-Metrics Corporation Dba Electro-Metrics
5120-01-073-0380GS15953-1 INTERCHANGEABLE
Tool,installer,pin
Hamilton Sundstrand Corporation Dba Collins Aerospace
5330-01-106-64314902 INTERCHANGEABLE
Seal,plain Encased
Stewart & Stevenson Power Products Llc
6105-01-260-0123 INTERCHANGEABLE
Motor,alternating Current
5120-01-378-5897 INTERCHANGEABLE
Adapter,socket Wrench
Cross-Reference Index
Part NumberManufacturer
4902 PRIMARY Triumph Engine Control Systems Llc (USA)
Related Parts
5330-00-395-4738INTERCHANGEABLE
SEAL,PLAIN
4902
5905-00-448-2601INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
4902
5330-00-521-6104INTERCHANGEABLE
SEAL,PLAIN ENCASED
4902
2520-00-773-5974INTERCHANGEABLE
SHAFT PUMP DRIVE
5930-00-943-0260INTERCHANGEABLE
SWITCH,TOGGLE
5998-01-010-0877INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
4902
5120-01-073-0380INTERCHANGEABLE
TOOL,INSTALLER,PIN
GS15953-1
5330-01-106-6431INTERCHANGEABLE
SEAL,PLAIN ENCASED
4902
6105-01-260-0123INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5120-01-378-5897INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
4730-01-588-6804INTERCHANGEABLE
PNEUMATIC MUFFLER,EXHAUST-INTAKE
4902
5985-01-690-2392INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
490-2

Frequently Asked Questions

What is NSN 5310-00-274-8493?

NSN 5310-00-274-8493 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 5310-00-274-8493?

NSN 5310-00-274-8493 has 1 cross-referenced part number: 4902 (Triumph Engine Control Systems Llc).

What NSN replaces 5310-00-274-8493?

There are 12 known substitutes for 5310-00-274-8493: 5330-00-395-4738, 5905-00-448-2601, 5330-00-521-6104 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4902?

Key specifications for 4902: Hole Diameter: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Material Document and Classification: AMS 5515 ASSN STD 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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