PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

221A751-1Cooler Unit,air

Lockheed Martin Corporation Div Rms - Manassas · NSN 4130-01-536-4125 · FSC 4130 · No Item Name Available
Verified by PartsTable
NSN 4130-01-536-4125 — this item is cataloged by the U.S. Government under National Stock Number 4130-01-536-4125. Primary manufacturer part number: 221A751-1.
Features
  • Cooler Unit,air — FSC 4130
  • 3 verified cross-references
  • Primary manufacturer: Lockheed Martin Corporation Div Rms - Manassas
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cooler Unit,air, cataloged under National Stock Number 4130-01-536-4125, is classified within Federal Supply Class 4130 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Manassas. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4130-01-536-4125
Primary Part Number221A751-1
Item NameCooler Unit,air
FSC / FSG4130 / 41 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Manassas
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3930-00-688-802302161-3056-03 INTERCHANGEABLE
Roller Tray Assembly
Asrc Federal Facilities Logistics, Llc
3030-00-982-121217350-2 INTERCHANGEABLE
Belts,v,matched Set
Carlisle Power Transmission Products Inc
Cross-Reference Index
Part NumberManufacturer
1735-02 Rotron Incorporated (USA)
221A751-1 PRIMARY Lockheed Martin Corporation Div Rms - Manassas (USA)
N108910 PRIMARY Lockheed Martin Corporation Div Rms - Manassas (USA)
Related Parts
3930-00-688-8023INTERCHANGEABLE
ROLLER TRAY ASSEMBLY
02161-3056-03
3030-00-982-1212INTERCHANGEABLE
BELTS,V,MATCHED SET
17350-2

Frequently Asked Questions

What is NSN 4130-01-536-4125?

NSN 4130-01-536-4125 is a Cooler Unit,air, manufactured by Lockheed Martin Corporation Div Rms - Manassas, classified under FSC 4130 (No Item Name Available). Status: active.

What are the part numbers for NSN 4130-01-536-4125?

NSN 4130-01-536-4125 has 3 cross-referenced part numbers: 1735-02 (Rotron Incorporated), 221A751-1 (Lockheed Martin Corporation Div Rms - Manassas), N108910 (Lockheed Martin Corporation Div Rms - Manassas).

What NSN replaces 4130-01-536-4125?

There are 2 known substitutes for 4130-01-536-4125: 3930-00-688-8023, 3030-00-982-1212. Verify interchangeability with system specifications before substitution.

What are the specifications of 221A751-1?

Key specifications for 221A751-1: End Item Identification: AN/BYK-6(V)1 UNIT 7001&7002&7003 CONFIG C, CSES1-1&-2, ARCH SYS BAY 11&EQUIP BAY;TACTICAL TOMAHAWK WPN CNTL 3 BAY (UNIT 5026&5027); Special Features: ITEM NAME TEXT IS COOLER UNIT,AIR; Part Name Assigned by Controlling Agency: HEAT EXCHANGER ASSY. 3 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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