PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R91Spring,helical,compression

Baumbach E a Mfg Co · NSN 5360-00-601-8445 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-601-8445 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-601-8445. Primary manufacturer part number: R91.
Features
  • Spring,helical,compression — FSC 5360
  • Spring Deflection Rate: 6.500 POUNDS PER INCH NOMINAL LBS
  • End Style: SPRING END,SQUARED AND GROUND BOTH ENDS
  • Bore Diameter: 0.562 INCHES NOMINAL IN
  • Spring Free Length: 5.000 INCHES NOMINAL IN
  • Spring Solid Length: 2.375 INCHES NOMINAL IN
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Style Designator: CYLINDRICAL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-601-8445, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Baumbach E a Mfg Co. Government technical data includes 8 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-601-8445
Primary Part NumberR91
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerBaumbach E a Mfg Co
StatusACTIVE
Spring Deflection Rate6.500 POUNDS PER INCH NOMINAL LBS
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Bore Diameter0.562 INCHES NOMINAL IN
Spring Free Length5.000 INCHES NOMINAL IN
Spring Solid Length2.375 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Style DesignatorCYLINDRICAL
Accommodated Rod Diameter0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4320-00-062-9585R91 INTERCHANGEABLE
Rotor,pump
Circor Naval Solutions Llc Dba Warren Pumps
5945-00-885-838415427 INTERCHANGEABLE
Relay,solid State
Versitron Inc
Cross-Reference Index
Part NumberManufacturer
R91 PRIMARY Baumbach E a Mfg Co (USA)
Related Parts
4320-00-062-9585INTERCHANGEABLE
ROTOR,PUMP
R91
5945-00-885-8384INTERCHANGEABLE
RELAY,SOLID STATE
15427

Frequently Asked Questions

What is NSN 5360-00-601-8445?

NSN 5360-00-601-8445 is a Spring,helical,compression, manufactured by Baumbach E a Mfg Co, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-601-8445?

NSN 5360-00-601-8445 has 1 cross-referenced part number: R91 (Baumbach E a Mfg Co).

What NSN replaces 5360-00-601-8445?

There are 2 known substitutes for 5360-00-601-8445: 4320-00-062-9585, 5945-00-885-8384. Verify interchangeability with system specifications before substitution.

What are the specifications of R91?

Key specifications for R91: Spring Deflection Rate: 6.500 POUNDS PER INCH NOMINAL LBS; End Style: SPRING END,SQUARED AND GROUND BOTH ENDS; Bore Diameter: 0.562 INCHES NOMINAL IN; Spring Free Length: 5.000 INCHES NOMINAL IN. 8 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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