PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A665Torque Tester

Ametek Inc Div Aerospace and Defense · NSN 6635-00-199-3568 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-00-199-3568 — this item is cataloged by the U.S. Government under National Stock Number 6635-00-199-3568. Primary manufacturer part number: A665.
Features
  • Torque Tester — FSC 6635
  • 1 verified cross-reference
  • Primary manufacturer: Ametek Inc Div Aerospace and Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Torque Tester, cataloged under National Stock Number 6635-00-199-3568, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ametek Inc Div Aerospace and Defense. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-00-199-3568
Primary Part NumberA665
Item NameTorque Tester
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerAmetek Inc Div Aerospace and Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3020-00-255-7204100RL INTERCHANGEABLE
Link,roller Chain
Jeffrey Chain L.p.
6210-00-370-1175151983 INTERCHANGEABLE
Shield,light,electrostatic
Telemechanics Inc
5930-00-402-6807B54044G1 INTERCHANGEABLE
Switch,thermostatic
Dcm Manufacturing, Inc.
5950-01-126-2902278-0444-060 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4320-01-134-3659A665 INTERCHANGEABLE
Impeller Assembly
Circor Naval Solutions Llc Dba Warren Pumps
5340-01-581-0839A-665 INTERCHANGEABLE
Plug,aluminum
Hartzell Propeller Llc
9905-01-659-8680A665 INTERCHANGEABLE
Plate,identification
Westport International, Inc.
Cross-Reference Index
Part NumberManufacturer
A665 PRIMARY Ametek Inc Div Aerospace and Defense (USA)
Related Parts
3020-00-255-7204INTERCHANGEABLE
LINK,ROLLER CHAIN
100RL
6210-00-370-1175INTERCHANGEABLE
SHIELD,LIGHT,ELECTROSTATIC
151983
5930-00-402-6807INTERCHANGEABLE
SWITCH,THERMOSTATIC
B54044G1
5950-01-126-2902INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
278-0444-060
4320-01-134-3659INTERCHANGEABLE
IMPELLER ASSEMBLY
A665
5340-01-581-0839INTERCHANGEABLE
PLUG,ALUMINUM
A-665
9905-01-659-8680INTERCHANGEABLE
PLATE,IDENTIFICATION
A665

Frequently Asked Questions

What is NSN 6635-00-199-3568?

NSN 6635-00-199-3568 is a Torque Tester, manufactured by Ametek Inc Div Aerospace and Defense, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-00-199-3568?

NSN 6635-00-199-3568 has 1 cross-referenced part number: A665 (Ametek Inc Div Aerospace and Defense).

What NSN replaces 6635-00-199-3568?

There are 7 known substitutes for 6635-00-199-3568: 3020-00-255-7204, 6210-00-370-1175, 5930-00-402-6807 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A665?

Key specifications for A665: End Item Identification: INDICATOR,NO. 8DJ142LXF3. 1 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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