PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

537B21-41Washer,spring Tension

Cardwell Condenser Corp Lapointe-Admiral Div · NSN 5310-00-052-0326 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-052-0326 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-052-0326. Primary manufacturer part number: 537B21-41.
Features
  • Washer,spring Tension — FSC 5310
  • Material: COPPER ALLOY OVERALL
  • Outside Diameter: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
  • Material Thickness: 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
  • Hole Diameter: 0.197 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
  • Surface Treatment: NICKEL OVERALL
  • Surface Treatment Document and Classification: QQ-N-290,CL 1,TY 5 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • 11 verified cross-references
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Mechanical energy storage
  • Vibration dampening
General Description

The Washer,spring Tension, cataloged under National Stock Number 5310-00-052-0326, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cardwell Condenser Corp Lapointe-Admiral Div. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 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
NSN5310-00-052-0326
Primary Part Number537B21-41
Item NameWasher,spring Tension
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCardwell Condenser Corp Lapointe-Admiral Div
StatusCANCELLED
MaterialCOPPER ALLOY OVERALL
Outside Diameter0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
Material Thickness0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN
Hole Diameter0.197 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
Surface TreatmentNICKEL OVERALL
Surface Treatment Document and ClassificationQQ-N-290,CL 1,TY 5 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-011-0405 INTERCHANGEABLE
Washer,lock
5905-00-241-2748 INTERCHANGEABLE
Resistor,variable,wire Wound,non
3433-00-272-61762W INTERCHANGEABLE
Wire Control Unit,metalizing Gun
Oerlikon Metco Us Inc
5995-00-400-4826 INTERCHANGEABLE
Cable
6240-00-498-766918A1 INTERCHANGEABLE
Lamp,incandescent
Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
5120-00-542-4171 INTERCHANGEABLE
Pliers,wire Twister
6640-00-846-13572W INTERCHANGEABLE
Beaker,laboratory
Polar Ware Company
5310-00-991-96032W INTERCHANGEABLE
Washer
Nyltite Corp of America
6625-01-142-7555135-0514 INTERCHANGEABLE
Voltmeter
Kepco, Inc. Dba Kepco Inc Div Kepco Dynatronix
6625-01-142-7556135-0523 INTERCHANGEABLE
Ammeter
Kepco, Inc. Dba Kepco Inc Div Kepco Dynatronix
Cross-Reference Index
Part NumberManufacturer
537B21-41 Cardwell Condenser Corp Lapointe-Admiral Div (USA)
8105903 Us Army Aviation and Missile Command (USA)
2690183-0001 Raytheon Company Dba Raytheon (USA)
4051323-0703 Raytheon Company Dba Raytheon Co (USA)
A104-6-3 Dimcogray Corporation Dba Dimco-Gray Company (USA)
MS21332-41 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
3038-9127 Norden Carl L Co Inc
AN3195-41 Aeronautical Standards Group Dept of Navy and Air Force (USA)
SM-C-969870-1 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
837689 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
2W Dimcogray Corporation Dba Dimco-Gray Company (USA)
Related Parts
5310-00-011-0405INTERCHANGEABLE
WASHER,LOCK
5905-00-241-2748INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
3433-00-272-6176INTERCHANGEABLE
WIRE CONTROL UNIT,METALIZING GUN
2W
5995-00-400-4826INTERCHANGEABLE
CABLE
6240-00-498-7669INTERCHANGEABLE
LAMP,INCANDESCENT
18A1
5120-00-542-4171INTERCHANGEABLE
PLIERS,WIRE TWISTER
6640-00-846-1357INTERCHANGEABLE
BEAKER,LABORATORY
2W
5310-00-991-9603INTERCHANGEABLE
WASHER
2W
6625-01-142-7555INTERCHANGEABLE
VOLTMETER
135-0514
6625-01-142-7556INTERCHANGEABLE
AMMETER
135-0523
6625-01-145-2291INTERCHANGEABLE
AMMETER
135-0518
6625-01-224-7094INTERCHANGEABLE
VOLTMETER
135-0513

Frequently Asked Questions

What is NSN 5310-00-052-0326?

NSN 5310-00-052-0326 is a Washer,spring Tension, manufactured by Cardwell Condenser Corp Lapointe-Admiral Div, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-052-0326?

NSN 5310-00-052-0326 has 11 cross-referenced part numbers: 537B21-41 (Cardwell Condenser Corp Lapointe-Admiral Div), 8105903 (Us Army Aviation and Missile Command), 2690183-0001 (Raytheon Company Dba Raytheon), 4051323-0703 (Raytheon Company Dba Raytheon Co), A104-6-3 (Dimcogray Corporation Dba Dimco-Gray Company) and 6 more.

What NSN replaces 5310-00-052-0326?

There are 12 known substitutes for 5310-00-052-0326: 5310-00-011-0405, 5905-00-241-2748, 3433-00-272-6176 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 537B21-41?

Key specifications for 537B21-41: Material: COPPER ALLOY OVERALL; Outside Diameter: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; Material Thickness: 0.008 INCHES MINIMUM AND 0.012 INCHES MAXIMUM IN; Hole Diameter: 0.197 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-052-0326 still in active supply?

NSN 5310-00-052-0326 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.
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