PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21925Washer,flat

Astrocom Electronics Inc · NSN 5310-00-880-9110 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-880-9110 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-880-9110. Primary manufacturer part number: 21925.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Color: BLACK OVERALL
  • Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 304 OVERALL
  • Surface Treatment: OXIDE FILM OVERALL
  • Surface Treatment Document and Classification: MIL-C-13924,CL 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 304 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-880-9110, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Astrocom Electronics Inc. Government technical data includes 11 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-880-9110
Primary Part Number21925
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAstrocom Electronics Inc
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
ColorBLACK OVERALL
Material Document and ClassificationQQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 304 OVERALL
Surface TreatmentOXIDE FILM OVERALL
Surface Treatment Document and ClassificationMIL-C-13924,CL 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Thickness0.029 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN
Overall Diameter0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
Hole Diameter0.292 INCHES MINIMUM AND 0.302 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
1650-00-020-061921925 INTERCHANGEABLE
Parts Kit,overhaul
Moog Inc
5360-00-349-715521925 INTERCHANGEABLE
Spring,helical,compression
Westinghouse Electric Corp
6130-00-769-385021925 INTERCHANGEABLE
Power Supply
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
5935-01-029-591221925 INTERCHANGEABLE
Adapter,connector
Amphenol Corporation Div Amphenol Rf
5998-01-073-6876 INTERCHANGEABLE
Circuit Card Assembly
2990-01-123-579721925 INTERCHANGEABLE
Muffler,exhaust
Walker Mfg Co
5961-01-170-2319 INTERCHANGEABLE
Transistor
4730-01-225-299521925 INTERCHANGEABLE
Coupling,pipe
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
8040-01-388-562045440 INTERCHANGEABLE
Adhesive
Loctite Corp
Cross-Reference Index
Part NumberManufacturer
21925 PRIMARY Astrocom Electronics Inc (USA)
Related Parts
1650-00-020-0619INTERCHANGEABLE
PARTS KIT,OVERHAUL
21925
5360-00-349-7155INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21925
6130-00-769-3850INTERCHANGEABLE
POWER SUPPLY
21925
5935-01-029-5912INTERCHANGEABLE
ADAPTER,CONNECTOR
21925
5998-01-073-6876INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
2990-01-123-5797INTERCHANGEABLE
MUFFLER,EXHAUST
21925
5961-01-170-2319INTERCHANGEABLE
TRANSISTOR
4730-01-225-2995INTERCHANGEABLE
COUPLING,PIPE
21925
8040-01-388-5620INTERCHANGEABLE
ADHESIVE
45440

Frequently Asked Questions

What is NSN 5310-00-880-9110?

NSN 5310-00-880-9110 is a Washer,flat, manufactured by Astrocom Electronics Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-880-9110?

NSN 5310-00-880-9110 has 1 cross-referenced part number: 21925 (Astrocom Electronics Inc).

What NSN replaces 5310-00-880-9110?

There are 9 known substitutes for 5310-00-880-9110: 1650-00-020-0619, 5360-00-349-7155, 6130-00-769-3850 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21925?

Key specifications for 21925: Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL; Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 304 OVERALL. 11 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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