PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3129EYSpring,helical,compression

Betts Industries, Inc. · NSN 5360-01-063-6837 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-01-063-6837 — this item is cataloged by the U.S. Government under National Stock Number 5360-01-063-6837. Primary manufacturer part number: 3129EY.
Features
  • Spring,helical,compression — FSC 5360
  • Inside Diameter: 1.060 INCHES NOMINAL IN
  • Coil Helix Direction: RIGHT-HAND
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Style Designator: CYLINDRICAL
  • Coil Quantity: 17 1/2
  • Spring Solid Length: 3.187 INCHES MAXIMUM IN
  • Material: STEEL CORROSION RESISTING OVERALL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-01-063-6837, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Betts Industries, Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-01-063-6837
Primary Part Number3129EY
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerBetts Industries, Inc.
StatusACTIVE
Inside Diameter1.060 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Style DesignatorCYLINDRICAL
Coil Quantity17 1/2
Spring Solid Length3.187 INCHES MAXIMUM IN
MaterialSTEEL CORROSION RESISTING OVERALL
Spring Free Outside Diameter1.750 INCHES NOMINAL IN
Spring Free Length6.750 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5360-01-077-94283129EY INTERCHANGEABLE
Spring
Heil Co the Midwest Parts Center
Cross-Reference Index
Part NumberManufacturer
MK3129CP Betts Industries, Inc. (USA)
3129EY PRIMARY Betts Industries, Inc. (USA)
Related Parts
5360-01-077-9428INTERCHANGEABLE
SPRING
3129EY

Frequently Asked Questions

What is NSN 5360-01-063-6837?

NSN 5360-01-063-6837 is a Spring,helical,compression, manufactured by Betts Industries, Inc., classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-01-063-6837?

NSN 5360-01-063-6837 has 2 cross-referenced part numbers: MK3129CP (Betts Industries, Inc.), 3129EY (Betts Industries, Inc.).

What NSN replaces 5360-01-063-6837?

There is 1 known substitute for 5360-01-063-6837: 5360-01-077-9428. Verify interchangeability with system specifications before substitution.

What are the specifications of 3129EY?

Key specifications for 3129EY: Inside Diameter: 1.060 INCHES NOMINAL IN; Coil Helix Direction: RIGHT-HAND; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Style Designator: CYLINDRICAL. 10 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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