PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6639Lining,gear Brake

Axillon Aerospace (baltimore) Inc. · NSN 1660-00-017-3421 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-017-3421 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-017-3421. Primary manufacturer part number: 6639.
Features
  • Lining,gear Brake — FSC 1660
  • 2 verified cross-references
  • Primary manufacturer: Axillon Aerospace (baltimore) Inc.
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Lining,gear Brake, cataloged under National Stock Number 1660-00-017-3421, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Axillon Aerospace (baltimore) Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-017-3421
Primary Part Number6639
Item NameLining,gear Brake
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerAxillon Aerospace (baltimore) Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5940-00-258-1832TM146 INTERCHANGEABLE
Post,binding,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5960-00-295-3589 INTERCHANGEABLE
Electron Tube
5340-00-532-92313B1084 INTERCHANGEABLE
Clamp,loop
Napco International Llc Dba Napco International Inc
5331-01-019-2448MS28775-249 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
4320-01-274-79916639 INTERCHANGEABLE
Guide,pump
Coffin Turbo Pump Inc
6110-01-418-25746639-G501 INTERCHANGEABLE
Panel,power Distribution
Howell Laboratories Inc Dba Howell Laboratories Inc
5136-01-431-19959739 INTERCHANGEABLE
Die,thread Cutting
Stanley Tools Div of Stanley Works
6530-01-561-4576CA571204 INTERCHANGEABLE
Glove,edema,occupational Therapy
Sammons Preston Dba Sammons Preston Rolyan
5136-01-652-03936639 INTERCHANGEABLE
Die,thread Cutting
Stanley Tools Div of Stanley Works
Cross-Reference Index
Part NumberManufacturer
6639 PRIMARY Axillon Aerospace (baltimore) Inc. (USA)
6639 Fisica Applied Technologies, Inc. Div Datron Advanced Technologies (USA)
Related Parts
5940-00-258-1832INTERCHANGEABLE
POST,BINDING,ELECTRICAL
TM146
5960-00-295-3589INTERCHANGEABLE
ELECTRON TUBE
5340-00-532-9231INTERCHANGEABLE
CLAMP,LOOP
3B1084
5331-01-019-2448INTERCHANGEABLE
O-RING
MS28775-249
4320-01-274-7991INTERCHANGEABLE
GUIDE,PUMP
6639
6110-01-418-2574INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
6639-G501
5136-01-431-1995INTERCHANGEABLE
DIE,THREAD CUTTING
9739
6530-01-561-4576INTERCHANGEABLE
GLOVE,EDEMA,OCCUPATIONAL THERAPY
CA571204
5136-01-652-0393INTERCHANGEABLE
DIE,THREAD CUTTING
6639

Frequently Asked Questions

What is NSN 1660-00-017-3421?

NSN 1660-00-017-3421 is a Lining,gear Brake, manufactured by Axillon Aerospace (baltimore) Inc., classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-017-3421?

NSN 1660-00-017-3421 has 2 cross-referenced part numbers: 6639 (Axillon Aerospace (baltimore) Inc.), 6639 (Fisica Applied Technologies, Inc. Div Datron Advanced Technologies).

What NSN replaces 1660-00-017-3421?

There are 9 known substitutes for 1660-00-017-3421: 5940-00-258-1832, 5960-00-295-3589, 5340-00-532-9231 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6639?

Key specifications for 6639: End Item Identification: F-5A AIRCRAFT A. 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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