PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16571-21-1Spring,helical,compression

Ward Leonard Ct Llc · NSN 5360-00-303-1183 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-303-1183 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-303-1183. Primary manufacturer part number: 16571-21-1.
Features
  • Spring,helical,compression — FSC 5360
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Spring Free Length: 0.812 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL
  • Material: COPPER ALLOY 511 OVERALL
  • Spring Solid Outside Diameter: 0.258 INCHES NOMINAL IN
  • Spring Free Outside Diameter: 0.258 INCHES NOMINAL IN
  • Inside Diameter: 0.190 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Copper Alloy 511 Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-303-1183, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ward Leonard Ct Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5360-00-303-1183
Primary Part Number16571-21-1
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerWard Leonard Ct Llc
StatusCANCELLED
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Spring Free Length0.812 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
MaterialCOPPER ALLOY 511 OVERALL
Spring Solid Outside Diameter0.258 INCHES NOMINAL IN
Spring Free Outside Diameter0.258 INCHES NOMINAL IN
Inside Diameter0.190 INCHES NOMINAL IN
Spring Solid Length0.500 INCHES NOMINAL IN
Coil Quantity9
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5133-00-228-13862511 1-39/64 INTERCHANGEABLE
Drill,twist
New York Twist Drill Inc
4820-00-847-523625215 INTERCHANGEABLE
Valve,safety Relief
Unimasco Inc
5345-01-053-029525215 INTERCHANGEABLE
Belt,abrasive
Meritor Heavy Vehicle Systems, Llc
3455-01-179-366550-10349 INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
3010-01-317-541831417 INTERCHANGEABLE
Coupling,shaft,flexible
Rexnord Industries, Llc Div Couplings Division
4130-01-538-9029 INTERCHANGEABLE
Pedestal,pao Chille
9515-01-576-43011657211 INTERCHANGEABLE
Strip,metal
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
1657-21-1 Zf Industrieantriebe Witten Gmbh (DEU)
2-52-15 Ward Leonard Ct Llc (USA)
16571-21-1 PRIMARY Ward Leonard Ct Llc (USA)
Related Parts
5133-00-228-1386INTERCHANGEABLE
DRILL,TWIST
2511 1-39/64
4820-00-847-5236INTERCHANGEABLE
VALVE,SAFETY RELIEF
25215
5345-01-053-0295INTERCHANGEABLE
BELT,ABRASIVE
25215
3455-01-179-3665INTERCHANGEABLE
REAMER,MACHINE
50-10349
3010-01-317-5418INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
31417
4130-01-538-9029INTERCHANGEABLE
PEDESTAL,PAO CHILLE
9515-01-576-4301INTERCHANGEABLE
STRIP,METAL
1657211

Frequently Asked Questions

What is NSN 5360-00-303-1183?

NSN 5360-00-303-1183 is a Spring,helical,compression, manufactured by Ward Leonard Ct Llc, classified under FSC 5360 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5360-00-303-1183?

NSN 5360-00-303-1183 has 3 cross-referenced part numbers: 1657-21-1 (Zf Industrieantriebe Witten Gmbh), 2-52-15 (Ward Leonard Ct Llc), 16571-21-1 (Ward Leonard Ct Llc).

What NSN replaces 5360-00-303-1183?

There are 7 known substitutes for 5360-00-303-1183: 5133-00-228-1386, 4820-00-847-5236, 5345-01-053-0295 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 16571-21-1?

Key specifications for 16571-21-1: End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Spring Free Length: 0.812 INCHES NOMINAL IN; Style Designator: CYLINDRICAL; Material: COPPER ALLOY 511 OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5360-00-303-1183 still in active supply?

NSN 5360-00-303-1183 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