PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C51Spring,helical,extension

American Standard Inc Westinghouse Air Brake Co Div · NSN 5360-00-246-9557 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-246-9557 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-246-9557. Primary manufacturer part number: C51.
Features
  • Spring,helical,extension — FSC 5360
  • Spring Free Length: 11.000 INCHES NOMINAL IN
  • Coil Quantity: 43-1/2
  • Style Designator: CYLINDRICAL
  • Opening Width: 0.313 INCHES NOMINAL BOTH ENDS IN
  • Design Type: CLOSED
  • Material: STEEL OVERALL
  • End Style: MACHINED HALF LOOP BOTH ENDS
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,extension, cataloged under National Stock Number 5360-00-246-9557, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American Standard Inc Westinghouse Air Brake Co Div. Government technical data includes 10 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5360-00-246-9557
Primary Part NumberC51
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerAmerican Standard Inc Westinghouse Air Brake Co Div
StatusCANCELLED
Spring Free Length11.000 INCHES NOMINAL IN
Coil Quantity43-1/2
Style DesignatorCYLINDRICAL
Opening Width0.313 INCHES NOMINAL BOTH ENDS IN
Design TypeCLOSED
MaterialSTEEL OVERALL
End StyleMACHINED HALF LOOP BOTH ENDS
Inside Diameter1.043 INCHES NOMINAL IN
Spring Free Outside Diameter1.457 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5945-00-017-052766C43042 INTERCHANGEABLE
Relay,electromagnetic
Ogden Air Logistics Center
6110-00-080-749311073597 INTERCHANGEABLE
Control-Indicator Subassembly
Us Army Aviation and Missile Command
5999-00-201-372434797-1 INTERCHANGEABLE
Cap,electrical
Raytheon Company Dba Raytheon
5940-00-204-916243350-11 INTERCHANGEABLE
Terminal,lug
Hydro-Aire Aerospace Corp
4730-00-224-73230960-0034 INTERCHANGEABLE
Nipple,tube
Victor Equipment Co
3030-00-529-0296 INTERCHANGEABLE
Belt,v
4920-00-609-8649 INTERCHANGEABLE
Load Bank Assy,heat
5315-00-811-3439C5-1 INTERCHANGEABLE
Pin,spring
Roller Bearing Co of America, Inc Div Pic Design
5945-00-924-4416 INTERCHANGEABLE
Relay
5935-01-011-4748C-51 INTERCHANGEABLE
Connector,receptacle,electrical
Hoffman Engineering, Llc Dba Hoffman Engineering Llc
Cross-Reference Index
Part NumberManufacturer
C51 American Standard Inc Westinghouse Air Brake Co Div (USA)
Related Parts
5945-00-017-0527INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
66C43042
6110-00-080-7493INTERCHANGEABLE
CONTROL-INDICATOR SUBASSEMBLY
11073597
5999-00-201-3724INTERCHANGEABLE
CAP,ELECTRICAL
34797-1
5940-00-204-9162INTERCHANGEABLE
TERMINAL,LUG
43350-11
4730-00-224-7323INTERCHANGEABLE
NIPPLE,TUBE
0960-0034
3030-00-529-0296INTERCHANGEABLE
BELT,V
4920-00-609-8649INTERCHANGEABLE
LOAD BANK ASSY,HEAT
5315-00-811-3439INTERCHANGEABLE
PIN,SPRING
C5-1
5945-00-924-4416INTERCHANGEABLE
RELAY
5935-01-011-4748INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
C-51
3950-01-363-9691INTERCHANGEABLE
GIN,POLE
4010-01-526-4626INTERCHANGEABLE
CHAIN,WELDLESS
C51-RING

Frequently Asked Questions

What is NSN 5360-00-246-9557?

NSN 5360-00-246-9557 is a Spring,helical,extension, manufactured by American Standard Inc Westinghouse Air Brake Co Div, classified under FSC 5360 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5360-00-246-9557?

NSN 5360-00-246-9557 has 1 cross-referenced part number: C51 (American Standard Inc Westinghouse Air Brake Co Div).

What NSN replaces 5360-00-246-9557?

There are 12 known substitutes for 5360-00-246-9557: 5945-00-017-0527, 6110-00-080-7493, 5999-00-201-3724 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C51?

Key specifications for C51: Spring Free Length: 11.000 INCHES NOMINAL IN; Coil Quantity: 43-1/2; Style Designator: CYLINDRICAL; Opening Width: 0.313 INCHES NOMINAL BOTH ENDS IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5360-00-246-9557 still in active supply?

NSN 5360-00-246-9557 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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