PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

955-4Washer,convex

Triumph Engine Control Systems Llc · NSN 5310-00-167-0725 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-167-0725 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-167-0725. Primary manufacturer part number: 955-4.
Features
  • Washer,convex — FSC 5310
  • Outside Diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
  • Material Thickness: 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
  • Hole Diameter: 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Style Designator: CONVEX
  • 11 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,convex, cataloged under National Stock Number 5310-00-167-0725, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-167-0725
Primary Part Number955-4
Item NameWasher,convex
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusCANCELLED
Outside Diameter0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
Material Thickness0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN
Hole Diameter0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OR ZINC OVERALL
Style DesignatorCONVEX
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
4730-00-003-522025236-4-4S INTERCHANGEABLE
Elbow,tube to Hose
Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
5970-00-063-06569554 INTERCHANGEABLE
Insulator,standoff
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
4730-00-148-3311 INTERCHANGEABLE
Strainer Element,sediment
5930-00-404-8942SCD17000-7 INTERCHANGEABLE
Cover,electrical Switch
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5999-00-500-58719554 INTERCHANGEABLE
Contact,electrical
Te Connectivity Corporation
5950-00-560-3198 INTERCHANGEABLE
Transformer,radio Frequency
5310-00-731-5337009554 INTERCHANGEABLE
Nut,plain,slotted,hexagon
Eaton Aerospace, Llc Dba Jackson South
6230-01-189-02229554 INTERCHANGEABLE
Keeper,searchlight
Carlisle & Finch Co
5315-01-492-1907003 152 INTERCHANGEABLE
Pin,straight,headless
Sauer Compressors Usa, Inc.
5330-01-653-87959554 INTERCHANGEABLE
Seal,door,aircraft
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
955-4 Goodrich Control Systems Gmbh (DEU)
955-4 United Dynamics, Inc (USA)
955-4 Thomas Instrument, Incorporated (USA)
00315-2 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
955-4 Department of the Air Force (USA)
955-4 Air Force Standard
955-4 PRIMARY Triumph Engine Control Systems Llc (USA)
955-4 Mac Aerospace Corp (USA)
955-4 Airtronics, Llc (USA)
955-4 Szczypski, Michael (USA)
955-4 Ctn Machining Dba Ctn Machining (USA)
Related Parts
4730-00-003-5220INTERCHANGEABLE
ELBOW,TUBE TO HOSE
25236-4-4S
5970-00-063-0656INTERCHANGEABLE
INSULATOR,STANDOFF
9554
4730-00-148-3311INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
5930-00-404-8942INTERCHANGEABLE
COVER,ELECTRICAL SWITCH
SCD17000-7
5999-00-500-5871INTERCHANGEABLE
CONTACT,ELECTRICAL
9554
5950-00-560-3198INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5310-00-731-5337INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
009554
6230-01-189-0222INTERCHANGEABLE
KEEPER,SEARCHLIGHT
9554
5315-01-492-1907INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
003 152
5330-01-653-8795INTERCHANGEABLE
SEAL,DOOR,AIRCRAFT
9554
5935-01-663-6923INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR
9-55-4

Frequently Asked Questions

What is NSN 5310-00-167-0725?

NSN 5310-00-167-0725 is a Washer,convex, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-167-0725?

NSN 5310-00-167-0725 has 11 cross-referenced part numbers: 955-4 (Goodrich Control Systems Gmbh), 955-4 (United Dynamics, Inc), 955-4 (Thomas Instrument, Incorporated), 00315-2 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), 955-4 (Department of the Air Force) and 6 more.

What NSN replaces 5310-00-167-0725?

There are 11 known substitutes for 5310-00-167-0725: 4730-00-003-5220, 5970-00-063-0656, 4730-00-148-3311 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 955-4?

Key specifications for 955-4: Outside Diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN; Material Thickness: 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN; Hole Diameter: 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN; Material: STEEL OVERALL. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-167-0725 still in active supply?

NSN 5310-00-167-0725 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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