PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1661Sleeve

Atwood Industries Inc Automotive Div · NSN 2520-00-563-8231 · FSC 2520 · No Item Name Available
Verified by PartsTable
NSN 2520-00-563-8231 — this item is cataloged by the U.S. Government under National Stock Number 2520-00-563-8231. Primary manufacturer part number: 1661.
Features
  • Sleeve — FSC 2520
  • 2 verified cross-references
  • Primary manufacturer: Atwood Industries Inc Automotive Div
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Sleeve, cataloged under National Stock Number 2520-00-563-8231, is classified within Federal Supply Class 2520 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Atwood Industries Inc Automotive Div. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSleeve
FSC / FSG2520 — No Item Name Available (FSG 25)
ManufacturersU S Army Tank Automotive Command Amsta-Im-Mm (CAGE 19207); Atwood Industries Inc Automotive Div (CAGE 70523)
Technical Specifications
ParameterValue
NSN2520-00-563-8231
Primary Part Number1661
Item NameSleeve
FSC / FSG2520 / 25 — No Item Name Available
ManufacturerAtwood Industries Inc Automotive Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6240-00-155-7958 INTERCHANGEABLE
Lamp,incandescent
5996-00-267-1139 INTERCHANGEABLE
Amplifier,radio Frequency
5325-00-301-865616750481-007 INTERCHANGEABLE
Grommet,nonmetallic
Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services
3460-00-322-5950B74.2 TY2 C60H12V 6X1-1/8X1-1/4 INTERCHANGEABLE
Wheel,abrasive
American National Standards Institute Incorporated Dba American National Standards Institute
5930-00-615-81951661 INTERCHANGEABLE
Switch
Illinois Tool Works, Inc. Div Magnaflux
5950-00-646-3603 INTERCHANGEABLE
Transformer,audio Frequency
2520-00-962-2966CA1647 INTERCHANGEABLE
Pressure Plate Assembly,clutch
Perfection Clutch
5855-01-072-88841661 INTERCHANGEABLE
Insert Lens Rotatin
Grimes Aerospace Company
5950-01-096-43331661 INTERCHANGEABLE
Coil
Crown Audio, Inc. Dba Crown International
6520-01-120-26531-661 INTERCHANGEABLE
Impression Tray,dental
Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia
Cross-Reference Index
Part NumberManufacturer
5638231 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
1661 PRIMARY Atwood Industries Inc Automotive Div (USA)
Related Parts
6240-00-155-7958INTERCHANGEABLE
LAMP,INCANDESCENT
5996-00-267-1139INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
5325-00-301-8656INTERCHANGEABLE
GROMMET,NONMETALLIC
16750481-007
3460-00-322-5950INTERCHANGEABLE
WHEEL,ABRASIVE
B74.2 TY2 C60H12V 6X1-1/8X1-1/4
5930-00-615-8195INTERCHANGEABLE
SWITCH
1661
5950-00-646-3603INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
2520-00-962-2966INTERCHANGEABLE
PRESSURE PLATE ASSEMBLY,CLUTCH
CA1647
5855-01-072-8884INTERCHANGEABLE
INSERT LENS ROTATIN
1661
5950-01-096-4333INTERCHANGEABLE
COIL
1661
6520-01-120-2653INTERCHANGEABLE
IMPRESSION TRAY,DENTAL
1-661
4220-01-153-2123INTERCHANGEABLE
JACKET,BUOYANCY AID
1661
5340-01-360-9252INTERCHANGEABLE
HANDLE,BOW

Frequently Asked Questions

What is NSN 2520-00-563-8231?

NSN 2520-00-563-8231 is a Sleeve, manufactured by Atwood Industries Inc Automotive Div, classified under FSC 2520 (No Item Name Available). Status: active.

What are the part numbers for NSN 2520-00-563-8231?

NSN 2520-00-563-8231 has 2 cross-referenced part numbers: 5638231 (U S Army Tank Automotive Command Amsta-Im-Mm), 1661 (Atwood Industries Inc Automotive Div).

What NSN replaces 2520-00-563-8231?

There are 12 known substitutes for 2520-00-563-8231: 6240-00-155-7958, 5996-00-267-1139, 5325-00-301-8656 and 9 more. Verify interchangeability with system specifications before substitution.

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