PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B770Spring,helical,compression

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 5360-00-343-5377 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-343-5377 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-343-5377. Primary manufacturer part number: B770.
Features
  • Spring,helical,compression — FSC 5360
  • Load Rating: 459.000 POUNDS NOMINAL LBS
  • Surface Treatment: CADMIUM OVERALL
  • Spring Length Under Load: 1.108 INCHES NOMINAL IN
  • Spring Free Length: 3.520 INCHES NOMINAL IN
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Spring Solid Length: 2.030 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Comp 6150 Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-343-5377, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 14 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-343-5377
Primary Part NumberB770
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
Load Rating459.000 POUNDS NOMINAL LBS
Surface TreatmentCADMIUM OVERALL
Spring Length Under Load1.108 INCHES NOMINAL IN
Spring Free Length3.520 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Material Document and ClassificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Spring Solid Length2.030 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Spring Solid Outside Diameter2.344 INCHES NOMINAL IN
Coil Quantity6 1/2
MaterialSTEEL COMP 6150 OVERALL
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Inside Diameter1.656 INCHES NOMINAL IN
Spring Free Outside Diameter2.344 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5925-00-389-6433B77.0 INTERCHANGEABLE
Thermal Release,circuit Breaker
Schneider Electric Usa, Inc.
5945-00-481-8159B7.70 INTERCHANGEABLE
Relay,thermal
Schneider Electric Usa, Inc.
6130-01-507-7789B770 INTERCHANGEABLE
Power Supply
Lockheed Martin Corporation Div Rms - Manassas
Cross-Reference Index
Part NumberManufacturer
B770 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
5925-00-389-6433INTERCHANGEABLE
THERMAL RELEASE,CIRCUIT BREAKER
B77.0
5945-00-481-8159INTERCHANGEABLE
RELAY,THERMAL
B7.70
6130-01-507-7789INTERCHANGEABLE
POWER SUPPLY
B770

Frequently Asked Questions

What is NSN 5360-00-343-5377?

NSN 5360-00-343-5377 is a Spring,helical,compression, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-343-5377?

NSN 5360-00-343-5377 has 1 cross-referenced part number: B770 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 5360-00-343-5377?

There are 3 known substitutes for 5360-00-343-5377: 5925-00-389-6433, 5945-00-481-8159, 6130-01-507-7789. Verify interchangeability with system specifications before substitution.

What are the specifications of B770?

Key specifications for B770: Load Rating: 459.000 POUNDS NOMINAL LBS; Surface Treatment: CADMIUM OVERALL; Spring Length Under Load: 1.108 INCHES NOMINAL IN; Spring Free Length: 3.520 INCHES NOMINAL IN. 14 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