PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

526A32Washer,flat

Cummins Power Generation Inc. · NSN 5310-00-721-5902 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-721-5902 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-721-5902. Primary manufacturer part number: 526A32.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL COMP 4130 OVERALL
  • Material Document and Classification: MIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: ZINC OR CADMIUM OVERALL
  • Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TY 1,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 4130 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-721-5902, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cummins Power Generation Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-721-5902
Primary Part Number526A32
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCummins Power Generation Inc.
StatusCANCELLED
MaterialSTEEL COMP 4130 OVERALL
Material Document and ClassificationMIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentZINC OR CADMIUM OVERALL
Surface Treatment Document and ClassificationQQ-Z-325,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TY 1,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL
Peripheral Shape StyleROUND
Hole Diameter0.443 INCHES MINIMUM AND 0.463 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Thickness0.061 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN
Overall Diameter0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
1650-00-048-350712514 INTERCHANGEABLE
Plunger,detent
Mid-America Aerotech, Llc
7510-00-067-7167 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
3040-00-071-6739 INTERCHANGEABLE
Shaft,drive,eccentr
2915-00-091-42151251-4 INTERCHANGEABLE
Sleeve Assembly,fuel Valve
Rocker Solenoid Co Dba Rocker Solenoid Co
2240-00-129-617312514 INTERCHANGEABLE
Valve,valve,brake
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
5330-00-171-931012514 INTERCHANGEABLE
Seal,plain Encased
Garwood/feller Inc Garwood Winch Div
5935-00-540-9066ST5M1302-001 INTERCHANGEABLE
Connector,plug,electrical
The Boeing Company Div Defense
5935-00-798-57461251-0074 INTERCHANGEABLE
Connector,receptacle,electrical
Keysight Technologies Inc
5330-00-998-3261 INTERCHANGEABLE
Seal,plain Encased
5935-01-010-1106150450-0000 INTERCHANGEABLE
Connector,receptacle,electrical
Itt Cannon Llc
Cross-Reference Index
Part NumberManufacturer
526A32 PRIMARY Cummins Power Generation Inc. (USA)
1942073 PRIMARY Naval Ship Systems Command (USA)
12514 PRIMARY Cummins Power Generation Inc. (USA)
M526A32 Met-Pro Corporation (USA)
9028498 PRIMARY Us Army Aviation and Missile Command (USA)
Related Parts
1650-00-048-3507INTERCHANGEABLE
PLUNGER,DETENT
12514
7510-00-067-7167INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
3040-00-071-6739INTERCHANGEABLE
SHAFT,DRIVE,ECCENTR
2915-00-091-4215INTERCHANGEABLE
SLEEVE ASSEMBLY,FUEL VALVE
1251-4
2240-00-129-6173INTERCHANGEABLE
VALVE,VALVE,BRAKE
12514
5330-00-171-9310INTERCHANGEABLE
SEAL,PLAIN ENCASED
12514
5935-00-540-9066INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ST5M1302-001
5935-00-798-5746INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1251-0074
5330-00-998-3261INTERCHANGEABLE
SEAL,PLAIN ENCASED
5935-01-010-1106INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
150450-0000
5340-01-015-0929INTERCHANGEABLE
STRAP,RETAINING
125-1-4
5935-01-068-9380INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
ST5M1348TS4B

Frequently Asked Questions

What is NSN 5310-00-721-5902?

NSN 5310-00-721-5902 is a Washer,flat, manufactured by Cummins Power Generation Inc., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-721-5902?

NSN 5310-00-721-5902 has 5 cross-referenced part numbers: 526A32 (Cummins Power Generation Inc.), 1942073 (Naval Ship Systems Command), 12514 (Cummins Power Generation Inc.), M526A32 (Met-Pro Corporation), 9028498 (Us Army Aviation and Missile Command).

What NSN replaces 5310-00-721-5902?

There are 12 known substitutes for 5310-00-721-5902: 1650-00-048-3507, 7510-00-067-7167, 3040-00-071-6739 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 526A32?

Key specifications for 526A32: Material: STEEL COMP 4130 OVERALL; Material Document and Classification: MIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment: ZINC OR CADMIUM OVERALL; Surface Treatment Document and Classification: QQ-Z-325,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TY 1,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-721-5902 still in active supply?

NSN 5310-00-721-5902 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.
PartsTable Design LLC · partstable.com