PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31003-1Retainer,spring

Pax Mfg Corp Hammarlund Mfg Co Div · NSN 5820-00-351-4729 · FSC 5820 · No Item Name Available
Verified by PartsTable
NSN 5820-00-351-4729 — this item is cataloged by the U.S. Government under National Stock Number 5820-00-351-4729. Primary manufacturer part number: 31003-1.
Features
  • Retainer,spring — FSC 5820
  • FSC Application Data: RADIO AND TELEVISION COMMUNICATION EQUIPMENT,EXCEPT AIRBORNE
  • 1 verified cross-reference
  • Primary manufacturer: Pax Mfg Corp Hammarlund Mfg Co Div
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Retainer,spring, cataloged under National Stock Number 5820-00-351-4729, is classified within Federal Supply Class 5820 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Pax Mfg Corp Hammarlund Mfg Co Div. Government technical data includes 1 verified specification, 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5820-00-351-4729
Primary Part Number31003-1
Item NameRetainer,spring
FSC / FSG5820 / 58 — No Item Name Available
ManufacturerPax Mfg Corp Hammarlund Mfg Co Div
StatusACTIVE
FSC Application DataRADIO AND TELEVISION COMMUNICATION EQUIPMENT,EXCEPT AIRBORNE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5945-00-008-7025310031 INTERCHANGEABLE
Relay,reed
Astronics Test Systems Inc
2540-01-163-862478404 INTERCHANGEABLE
Ventilator,air Circulating
Bergstrom Inc
3120-01-228-6202310.031 INTERCHANGEABLE
Bearing,sleeve
Marvco Tool & Manufacturing
4210-01-238-9842310031 INTERCHANGEABLE
Nozzle,fire Extinguisher
Oeco, Llc Dba Pacific Scientific Oeco
6680-01-315-4567310-031 INTERCHANGEABLE
Disk,meter
Schlumberger Electricities Inc Dba Neptune Measure
5930-01-389-9350 INTERCHANGEABLE
Switch,rotary
5998-01-439-9467310031 INTERCHANGEABLE
Circuit Card Assembly
Force Computers Inc.
4130-01-628-907631003-1 INTERCHANGEABLE
Compressor,refrigeration
I.s.c. Sales, Inc.
Cross-Reference Index
Part NumberManufacturer
31003-1 PRIMARY Pax Mfg Corp Hammarlund Mfg Co Div (USA)
Related Parts
5945-00-008-7025INTERCHANGEABLE
RELAY,REED
310031
2540-01-163-8624INTERCHANGEABLE
VENTILATOR,AIR CIRCULATING
78404
3120-01-228-6202INTERCHANGEABLE
BEARING,SLEEVE
310.031
4210-01-238-9842INTERCHANGEABLE
NOZZLE,FIRE EXTINGUISHER
310031
6680-01-315-4567INTERCHANGEABLE
DISK,METER
310-031
5930-01-389-9350INTERCHANGEABLE
SWITCH,ROTARY
5998-01-439-9467INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
310031
4130-01-628-9076INTERCHANGEABLE
COMPRESSOR,REFRIGERATION
31003-1

Frequently Asked Questions

What is NSN 5820-00-351-4729?

NSN 5820-00-351-4729 is a Retainer,spring, manufactured by Pax Mfg Corp Hammarlund Mfg Co Div, classified under FSC 5820 (No Item Name Available). Status: active.

What are the part numbers for NSN 5820-00-351-4729?

NSN 5820-00-351-4729 has 1 cross-referenced part number: 31003-1 (Pax Mfg Corp Hammarlund Mfg Co Div).

What NSN replaces 5820-00-351-4729?

There are 8 known substitutes for 5820-00-351-4729: 5945-00-008-7025, 2540-01-163-8624, 3120-01-228-6202 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31003-1?

Key specifications for 31003-1: FSC Application Data: RADIO AND TELEVISION COMMUNICATION EQUIPMENT,EXCEPT AIRBORNE. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com