PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

80521Caster Unit

Atwood Industries Inc Automotive Div · NSN 2540-00-848-3021 · FSC 2540 · No Item Name Available
Verified by PartsTable
NSN 2540-00-848-3021 — this item is cataloged by the U.S. Government under National Stock Number 2540-00-848-3021. Primary manufacturer part number: 80521.
Features
  • Caster Unit — FSC 2540
  • 4 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 Caster Unit, cataloged under National Stock Number 2540-00-848-3021, is classified within Federal Supply Class 2540 (No Item Name Available) of the Vehicular Equipment Components group. The primary manufacturer of record is Atwood Industries Inc Automotive Div. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameCaster Unit
FSC / FSG2540 — No Item Name Available (FSG 25)
ManufacturersAtwood Industries Inc Automotive Div (CAGE 70523); Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (CAGE 30003)
Technical Specifications
ParameterValue
NSN2540-00-848-3021
Primary Part Number80521
Item NameCaster Unit
FSC / FSG2540 / 25 — No Item Name Available
ManufacturerAtwood Industries Inc Automotive Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 10
5999-00-084-34991263115 INTERCHANGEABLE
Light-Switch
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5280-00-085-8240 INTERCHANGEABLE
Gage Set,inspection
9540-00-251-1790 INTERCHANGEABLE
Angle,structural
6250-00-686-4666 INTERCHANGEABLE
Lampholder
5120-01-040-983547100-1 INTERCHANGEABLE
Contact Positioner,terminal Crim
Te Connectivity Corporation
5342-01-050-978319024-1 INTERCHANGEABLE
Lead Clamp
Kurz & Root Generator Company, Llc
6145-01-165-14322BE932 INTERCHANGEABLE
Wire,electrical
Oshkosh Defense Llc
3110-01-205-4120805-20 INTERCHANGEABLE
Bearing,roller,tapered
Translectric Corp
5365-01-268-552980520 INTERCHANGEABLE
Spacer,ring
Lourdes Industries, Inc.
6545-01-617-500082520 INTERCHANGEABLE
Medical Equipment Set,blood Coll
Terumo Bct Inc Dba Caridianbct Inc
Cross-Reference Index
Part NumberManufacturer
80520 Atwood Industries Inc Automotive Div (USA)
2597068 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
80521 PRIMARY Atwood Industries Inc Automotive Div (USA)
7739 Atwood Industries Inc Automotive Div (USA)
Related Parts
5999-00-084-3499INTERCHANGEABLE
LIGHT-SWITCH
1263115
5280-00-085-8240INTERCHANGEABLE
GAGE SET,INSPECTION
9540-00-251-1790INTERCHANGEABLE
ANGLE,STRUCTURAL
6250-00-686-4666INTERCHANGEABLE
LAMPHOLDER
5120-01-040-9835INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
47100-1
5342-01-050-9783INTERCHANGEABLE
LEAD CLAMP
19024-1
6145-01-165-1432INTERCHANGEABLE
WIRE,ELECTRICAL
2BE932
3110-01-205-4120INTERCHANGEABLE
BEARING,ROLLER,TAPERED
805-20
5365-01-268-5529INTERCHANGEABLE
SPACER,RING
80520
6545-01-617-5000INTERCHANGEABLE
MEDICAL EQUIPMENT SET,BLOOD COLL
82520

Frequently Asked Questions

What is NSN 2540-00-848-3021?

NSN 2540-00-848-3021 is a Caster Unit, manufactured by Atwood Industries Inc Automotive Div, classified under FSC 2540 (No Item Name Available). Status: active.

What are the part numbers for NSN 2540-00-848-3021?

NSN 2540-00-848-3021 has 4 cross-referenced part numbers: 80520 (Atwood Industries Inc Automotive Div), 2597068 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 80521 (Atwood Industries Inc Automotive Div), 7739 (Atwood Industries Inc Automotive Div).

What NSN replaces 2540-00-848-3021?

There are 10 known substitutes for 2540-00-848-3021: 5999-00-084-3499, 5280-00-085-8240, 9540-00-251-1790 and 7 more. Verify interchangeability with system specifications before substitution.

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