PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

JH6668Spring,pendulum

Sigma Tek, Inc. · NSN 6610-00-181-6281 · FSC 6610 · No Item Name Available
Verified by PartsTable
NSN 6610-00-181-6281 — this item is cataloged by the U.S. Government under National Stock Number 6610-00-181-6281. Primary manufacturer part number: JH6668.
Features
  • Spring,pendulum — FSC 6610
  • 2 verified cross-references
  • Primary manufacturer: Sigma Tek, Inc.
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Spring,pendulum, cataloged under National Stock Number 6610-00-181-6281, is classified within Federal Supply Class 6610 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Sigma Tek, Inc.. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameSpring,pendulum
FSC / FSG6610 — No Item Name Available (FSG 66)
ManufacturersSigma Tek, Inc. (CAGE 86887)
Technical Specifications
ParameterValue
NSN6610-00-181-6281
Primary Part NumberJH6668
Item NameSpring,pendulum
FSC / FSG6610 / 66 — No Item Name Available
ManufacturerSigma Tek, Inc.
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
2530-00-140-36841097-668 INTERCHANGEABLE
Tie Rod,steering
Wheeler Fleet Solutions, Co.
4730-00-193-2700A733S-128CFB INTERCHANGEABLE
Nipple,pipe
American Society for Testing and Materials Dba Astm International
4510-00-478-8150 INTERCHANGEABLE
Faucet,single
4720-00-815-6354 INTERCHANGEABLE
Hose,nonmetallic
5826-00-853-73726668 INTERCHANGEABLE
Panel,module
Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
5950-00-955-9884900266-8 INTERCHANGEABLE
Saturable Reactor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-098-58686668-1R INTERCHANGEABLE
Spacer
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
3020-01-110-9916 INTERCHANGEABLE
Gear Cluster
4820-01-176-05016600D33 INTERCHANGEABLE
Piston Sensing Assembly
Greno Industries, Inc. Dba Greno Industries Inc
6515-01-317-85026668 INTERCHANGEABLE
Cartridge Assembly,respiratory S
Bird Products Corp
Cross-Reference Index
Part NumberManufacturer
JH6668 PRIMARY Sigma Tek, Inc. (USA)
6668 PRIMARY Sigma Tek, Inc. (USA)
Related Parts
2530-00-140-3684INTERCHANGEABLE
TIE ROD,STEERING
1097-668
4730-00-193-2700INTERCHANGEABLE
NIPPLE,PIPE
A733S-128CFB
4510-00-478-8150INTERCHANGEABLE
FAUCET,SINGLE
4720-00-815-6354INTERCHANGEABLE
HOSE,NONMETALLIC
5826-00-853-7372INTERCHANGEABLE
PANEL,MODULE
6668
5950-00-955-9884INTERCHANGEABLE
SATURABLE REACTOR
900266-8
5365-01-098-5868INTERCHANGEABLE
SPACER
6668-1R
3020-01-110-9916INTERCHANGEABLE
GEAR CLUSTER
4820-01-176-0501INTERCHANGEABLE
PISTON SENSING ASSEMBLY
6600D33
6515-01-317-8502INTERCHANGEABLE
CARTRIDGE ASSEMBLY,RESPIRATORY S
6668
2330-01-387-5424INTERCHANGEABLE
CHASSIS,TRAILER
12450001

Frequently Asked Questions

What is NSN 6610-00-181-6281?

NSN 6610-00-181-6281 is a Spring,pendulum, manufactured by Sigma Tek, Inc., classified under FSC 6610 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6610-00-181-6281?

NSN 6610-00-181-6281 has 2 cross-referenced part numbers: JH6668 (Sigma Tek, Inc.), 6668 (Sigma Tek, Inc.).

What NSN replaces 6610-00-181-6281?

There are 11 known substitutes for 6610-00-181-6281: 2530-00-140-3684, 4730-00-193-2700, 4510-00-478-8150 and 8 more. Verify interchangeability with system specifications before substitution.

Is NSN 6610-00-181-6281 still in active supply?

NSN 6610-00-181-6281 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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