PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73704Washer,lock

Api Heat Transfer Thermasys Corporation · NSN 5310-01-271-9498 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-271-9498 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-271-9498. Primary manufacturer part number: 73704.
Features
  • Washer,lock — FSC 5310
  • 2 verified cross-references
  • Primary manufacturer: Api Heat Transfer Thermasys Corporation
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-271-9498, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Api Heat Transfer Thermasys Corporation. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameWasher,lock
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersThermasys Corporation Dba General Thermo Dynamics Div General Thermodynamics Div (CAGE 63079); Api Heat Transfer Thermasys Corporation (CAGE 4C8A9)
Technical Specifications
ParameterValue
NSN5310-01-271-9498
Primary Part Number73704
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerApi Heat Transfer Thermasys Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6115-00-166-972373704 INTERCHANGEABLE
Armature,generator
Honeywell Intl Inc Defense Avionics Systems
5305-00-338-560373704 INTERCHANGEABLE
Screw,machine
Prestolite Electric Inc
5365-01-169-545673704 INTERCHANGEABLE
Spacer
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
6145-01-218-83737370-4 INTERCHANGEABLE
Cable,power,electrical
Birnbach Co Inc
5950-01-311-080073704 INTERCHANGEABLE
Transformer,power
Inrcore, Llc Div Inrcore
4330-01-318-36607370400 INTERCHANGEABLE
Disk,purifier
Alfa Laval Inc
Cross-Reference Index
Part NumberManufacturer
73704 Thermasys Corporation Dba General Thermo Dynamics Div General Thermodynamics Div
73704 PRIMARY Api Heat Transfer Thermasys Corporation (USA)
Related Parts
6115-00-166-9723INTERCHANGEABLE
ARMATURE,GENERATOR
73704
5305-00-338-5603INTERCHANGEABLE
SCREW,MACHINE
73704
5365-01-169-5456INTERCHANGEABLE
SPACER
73704
6145-01-218-8373INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
7370-4
5950-01-311-0800INTERCHANGEABLE
TRANSFORMER,POWER
73704
4330-01-318-3660INTERCHANGEABLE
DISK,PURIFIER
7370400

Frequently Asked Questions

What is NSN 5310-01-271-9498?

NSN 5310-01-271-9498 is a Washer,lock, manufactured by Api Heat Transfer Thermasys Corporation, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-271-9498?

NSN 5310-01-271-9498 has 2 cross-referenced part numbers: 73704 (Thermasys Corporation Dba General Thermo Dynamics Div General Thermodynamics Div), 73704 (Api Heat Transfer Thermasys Corporation).

What NSN replaces 5310-01-271-9498?

There are 6 known substitutes for 5310-01-271-9498: 6115-00-166-9723, 5305-00-338-5603, 5365-01-169-5456 and 3 more. Verify interchangeability with system specifications before substitution.

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