PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A56Spring,helical,compression

Ashcroft Inc Dba Heise · NSN 5360-00-290-8906 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-290-8906 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-290-8906. Primary manufacturer part number: A56.
Features
  • Spring,helical,compression — FSC 5360
  • Surface Treatment: CADMIUM OVERALL
  • Spring Deflection Rate: 232.500 POUNDS PER INCH NOMINAL LBS
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Material: STEEL OVERALL
  • Spring Free Outside Diameter: 1.259 INCHES NOMINAL IN
  • Coil Quantity: 8-7/8
  • Inside Diameter: 0.875 INCHES NOMINAL IN
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 5360-00-290-8906, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ashcroft Inc Dba Heise. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-290-8906
Primary Part NumberA56
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Surface TreatmentCADMIUM OVERALL
Spring Deflection Rate232.500 POUNDS PER INCH NOMINAL LBS
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
MaterialSTEEL OVERALL
Spring Free Outside Diameter1.259 INCHES NOMINAL IN
Coil Quantity8-7/8
Inside Diameter0.875 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND
Spring Free Length2.625 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3030-00-064-2092 INTERCHANGEABLE
Belts,v,matched Set
5365-00-391-5485A56 INTERCHANGEABLE
Bushing,trigger
Master Mfg Co
3030-00-885-1286A56 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
5920-01-098-8912 INTERCHANGEABLE
Lightning Rod
Cross-Reference Index
Part NumberManufacturer
A56 PRIMARY Ashcroft Inc Dba Heise (USA)
Related Parts
3030-00-064-2092INTERCHANGEABLE
BELTS,V,MATCHED SET
5365-00-391-5485INTERCHANGEABLE
BUSHING,TRIGGER
A56
3030-00-885-1286INTERCHANGEABLE
BELT,V
A56
5920-01-098-8912INTERCHANGEABLE
LIGHTNING ROD

Frequently Asked Questions

What is NSN 5360-00-290-8906?

NSN 5360-00-290-8906 is a Spring,helical,compression, manufactured by Ashcroft Inc Dba Heise, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-290-8906?

NSN 5360-00-290-8906 has 1 cross-referenced part number: A56 (Ashcroft Inc Dba Heise).

What NSN replaces 5360-00-290-8906?

There are 4 known substitutes for 5360-00-290-8906: 3030-00-064-2092, 5365-00-391-5485, 3030-00-885-1286 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A56?

Key specifications for A56: Surface Treatment: CADMIUM OVERALL; Spring Deflection Rate: 232.500 POUNDS PER INCH NOMINAL LBS; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Material: STEEL OVERALL. 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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