PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A4639Spring,helical,compression

Marine Acquisition (us) Incorporated Div Prime Line Industrial Controls · NSN 5360-00-356-7139 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-356-7139 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-356-7139. Primary manufacturer part number: A4639.
Features
  • Spring,helical,compression — FSC 5360
  • Inside Diameter: 0.312 INCHES NOMINAL IN
  • Spring Free Outside Diameter: 0.345 INCHES NOMINAL IN
  • Coil Quantity: 17
  • Spring Free Length: 2.500 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL
  • Material Document and Classification: MIL-S-6101 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL OVERALL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-356-7139, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Marine Acquisition (us) Incorporated Div Prime Line Industrial Controls. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-356-7139
Primary Part NumberA4639
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerMarine Acquisition (us) Incorporated Div Prime Line Industrial Controls
StatusACTIVE
Inside Diameter0.312 INCHES NOMINAL IN
Spring Free Outside Diameter0.345 INCHES NOMINAL IN
Coil Quantity17
Spring Free Length2.500 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Material Document and ClassificationMIL-S-6101 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
End StyleSPRING END,SQUARED BOTH ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3020-00-025-3503A4639 INTERCHANGEABLE
Gear,spur
Iwc Llc Dba Ideal Windlass Company
5315-00-682-1811 INTERCHANGEABLE
Key,machine
Cross-Reference Index
Part NumberManufacturer
A4639 Marine Acquisition (us) Incorporated Div Prime Line Industrial Controls (USA)
A4639 Incom Intl Inc Morse Controls Div (USA)
Related Parts
3020-00-025-3503INTERCHANGEABLE
GEAR,SPUR
A4639
5315-00-682-1811INTERCHANGEABLE
KEY,MACHINE

Frequently Asked Questions

What is NSN 5360-00-356-7139?

NSN 5360-00-356-7139 is a Spring,helical,compression, manufactured by Marine Acquisition (us) Incorporated Div Prime Line Industrial Controls, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-356-7139?

NSN 5360-00-356-7139 has 2 cross-referenced part numbers: A4639 (Marine Acquisition (us) Incorporated Div Prime Line Industrial Controls), A4639 (Incom Intl Inc Morse Controls Div).

What NSN replaces 5360-00-356-7139?

There are 2 known substitutes for 5360-00-356-7139: 3020-00-025-3503, 5315-00-682-1811. Verify interchangeability with system specifications before substitution.

What are the specifications of A4639?

Key specifications for A4639: Inside Diameter: 0.312 INCHES NOMINAL IN; Spring Free Outside Diameter: 0.345 INCHES NOMINAL IN; Coil Quantity: 17; Spring Free Length: 2.500 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com