PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

701688Seat,helical Compression Spring

Hamilton Sundstrand Corporation · NSN 5340-00-199-8660 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-199-8660 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-199-8660. Primary manufacturer part number: 701688.
Features
  • Seat,helical Compression Spring — FSC 5340
  • Material: STEEL
  • Design Type: SOLID
  • FSC Application Data: AIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS
  • Material Hardness Rating: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
  • 1 verified cross-reference
  • Primary manufacturer: Hamilton Sundstrand Corporation
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel construction
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-199-8660, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation. Government technical data includes 4 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-199-8660
Primary Part Number701688
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation
StatusACTIVE
MaterialSTEEL
Design TypeSOLID
FSC Application DataAIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS
Material Hardness Rating50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 4
5999-00-487-7926701688 INTERCHANGEABLE
Contact Assembly,electrical
Lockheed Martin Corporation Div Rms - Mitchel Field
4730-01-373-56310503-10-6-C INTERCHANGEABLE
Adapter,straight,tube to Boss
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
6750-01-427-6163 INTERCHANGEABLE
Film,photographic
2090-01-574-5641112206 INTERCHANGEABLE
Cover,lrad 500
Shield Technologies Corp Div Shield Technologies Corporation
Cross-Reference Index
Part NumberManufacturer
701688 PRIMARY Hamilton Sundstrand Corporation (USA)
Related Parts
5999-00-487-7926INTERCHANGEABLE
CONTACT ASSEMBLY,ELECTRICAL
701688
4730-01-373-5631INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
0503-10-6-C
6750-01-427-6163INTERCHANGEABLE
FILM,PHOTOGRAPHIC
2090-01-574-5641INTERCHANGEABLE
COVER,LRAD 500
112206

Frequently Asked Questions

What is NSN 5340-00-199-8660?

NSN 5340-00-199-8660 is a Seat,helical Compression Spring, manufactured by Hamilton Sundstrand Corporation, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-199-8660?

NSN 5340-00-199-8660 has 1 cross-referenced part number: 701688 (Hamilton Sundstrand Corporation).

What NSN replaces 5340-00-199-8660?

There are 4 known substitutes for 5340-00-199-8660: 5999-00-487-7926, 4730-01-373-5631, 6750-01-427-6163 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 701688?

Key specifications for 701688: Material: STEEL; Design Type: SOLID; FSC Application Data: AIRCRAFT HYDRAULIC,VACUUM,DEICING SYSTEMS; Material Hardness Rating: 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM. 4 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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