PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21003Retainer,electron,t

Leica Inc Surveying and Photogrammetry Systems Div · NSN 5960-00-521-0221 · FSC 5960 · No Item Name Available
Verified by PartsTable
NSN 5960-00-521-0221 — this item is cataloged by the U.S. Government under National Stock Number 5960-00-521-0221. Primary manufacturer part number: 21003.
Features
  • Retainer,electron,t — FSC 5960
  • 3 verified cross-references
  • Primary manufacturer: Leica Inc Surveying and Photogrammetry Systems Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Retainer,electron,t, cataloged under National Stock Number 5960-00-521-0221, is classified within Federal Supply Class 5960 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Leica Inc Surveying and Photogrammetry Systems Div. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,electron,t
FSC / FSG5960 — No Item Name Available (FSG 59)
ManufacturersFelters Co the (CAGE 72386); Leica Inc Surveying and Photogrammetry Systems Div (CAGE 78039); Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (CAGE 80063)
Technical Specifications
ParameterValue
NSN5960-00-521-0221
Primary Part Number21003
Item NameRetainer,electron,t
FSC / FSG5960 / 59 — No Item Name Available
ManufacturerLeica Inc Surveying and Photogrammetry Systems Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5998-00-170-6721 INTERCHANGEABLE
Electronic Components Assembly
5120-00-204-053021003 INTERCHANGEABLE
Face,hammer,inserted
Garland Manufacturing Co Dba Garland Manufacturing Co Div Uhmw Polyethylene Division
5325-00-276-42487431654-118 INTERCHANGEABLE
Grommet,nonmetallic
Westinghouse Electric Corp
2805-00-391-321021003 INTERCHANGEABLE
Ring,piston
Briggs and Stratton Corp
5325-00-597-51762100-3 INTERCHANGEABLE
Insert,screw Thread
Nafco Usa Llc
5950-00-787-7044 INTERCHANGEABLE
Coil,radio Frequency
5325-00-803-7304 INTERCHANGEABLE
Ring,retaining
5940-00-983-6114 INTERCHANGEABLE
Terminal Board
6685-00-994-102765C INTERCHANGEABLE
Thermometer,self-Indicating
Weksler Glass Thermometer Corp
4130-01-017-3319456295 INTERCHANGEABLE
Filter Element,air Conditioning
Donaldson Company, Inc.
Cross-Reference Index
Part NumberManufacturer
21003 Felters Co the (USA)
21003 PRIMARY Leica Inc Surveying and Photogrammetry Systems Div (USA)
SMB182854 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
Related Parts
5998-00-170-6721INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
5120-00-204-0530INTERCHANGEABLE
FACE,HAMMER,INSERTED
21003
5325-00-276-4248INTERCHANGEABLE
GROMMET,NONMETALLIC
7431654-118
2805-00-391-3210INTERCHANGEABLE
RING,PISTON
21003
5325-00-597-5176INTERCHANGEABLE
INSERT,SCREW THREAD
2100-3
5950-00-787-7044INTERCHANGEABLE
COIL,RADIO FREQUENCY
5325-00-803-7304INTERCHANGEABLE
RING,RETAINING
5940-00-983-6114INTERCHANGEABLE
TERMINAL BOARD
6685-00-994-1027INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
65C
4130-01-017-3319INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
456295
5961-01-249-4469INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
21003
9330-01-255-5405INTERCHANGEABLE
TUBING,PLASTIC,SPIRAL WRAP
706751

Frequently Asked Questions

What is NSN 5960-00-521-0221?

NSN 5960-00-521-0221 is a Retainer,electron,t, manufactured by Leica Inc Surveying and Photogrammetry Systems Div, classified under FSC 5960 (No Item Name Available). Status: active.

What are the part numbers for NSN 5960-00-521-0221?

NSN 5960-00-521-0221 has 3 cross-referenced part numbers: 21003 (Felters Co the), 21003 (Leica Inc Surveying and Photogrammetry Systems Div), SMB182854 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir).

What NSN replaces 5960-00-521-0221?

There are 12 known substitutes for 5960-00-521-0221: 5998-00-170-6721, 5120-00-204-0530, 5325-00-276-4248 and 9 more. Verify interchangeability with system specifications before substitution.

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