PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GA1521Heater,crankcase

Hartford Compressors Inc · NSN 4540-00-405-9967 · FSC 4540 · No Item Name Available
Verified by PartsTable
NSN 4540-00-405-9967 — this item is cataloged by the U.S. Government under National Stock Number 4540-00-405-9967. Primary manufacturer part number: GA1521.
Features
  • Heater,crankcase — FSC 4540
  • General Characteristics Item Description: AC,208/230V,60 HZ V
  • 3 verified cross-references
  • Primary manufacturer: Hartford Compressors Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,crankcase, cataloged under National Stock Number 4540-00-405-9967, is classified within Federal Supply Class 4540 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Hartford Compressors Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4540-00-405-9967
Primary Part NumberGA1521
Item NameHeater,crankcase
FSC / FSG4540 / 45 — No Item Name Available
ManufacturerHartford Compressors Inc
StatusACTIVE
General Characteristics Item DescriptionAC,208/230V,60 HZ V
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5920-00-557-2647 INTERCHANGEABLE
Fuse,cartridge
5998-01-135-5185148511 INTERCHANGEABLE
Circuit Card Assembly
Scientific Atlanta Inc
5342-01-183-168314851-1 INTERCHANGEABLE
Fairlead,tubular
Mission Systems Orchard Park Inc
3020-01-287-4188PF040110 INTERCHANGEABLE
Pulley,groove
Avaho Acquisition Corp Dba Impac
5365-01-350-296214851-1 INTERCHANGEABLE
Plug,machine Thread
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5985-01-692-727907011T3221-0 INTERCHANGEABLE
Antenna Subassembly
Gatr Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
1485-1-1 Zf Industrieantriebe Witten Gmbh (DEU)
GA1521 PRIMARY Hartford Compressors Inc (USA)
HTR59T2 Hartford Compressors Inc (USA)
Related Parts
5920-00-557-2647INTERCHANGEABLE
FUSE,CARTRIDGE
5998-01-135-5185INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
148511
5342-01-183-1683INTERCHANGEABLE
FAIRLEAD,TUBULAR
14851-1
3020-01-287-4188INTERCHANGEABLE
PULLEY,GROOVE
PF040110
5365-01-350-2962INTERCHANGEABLE
PLUG,MACHINE THREAD
14851-1
5985-01-692-7279INTERCHANGEABLE
ANTENNA SUBASSEMBLY
07011T3221-0

Frequently Asked Questions

What is NSN 4540-00-405-9967?

NSN 4540-00-405-9967 is a Heater,crankcase, manufactured by Hartford Compressors Inc, classified under FSC 4540 (No Item Name Available). Status: active.

What are the part numbers for NSN 4540-00-405-9967?

NSN 4540-00-405-9967 has 3 cross-referenced part numbers: 1485-1-1 (Zf Industrieantriebe Witten Gmbh), GA1521 (Hartford Compressors Inc), HTR59T2 (Hartford Compressors Inc).

What NSN replaces 4540-00-405-9967?

There are 6 known substitutes for 4540-00-405-9967: 5920-00-557-2647, 5998-01-135-5185, 5342-01-183-1683 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GA1521?

Key specifications for GA1521: General Characteristics Item Description: AC,208/230V,60 HZ V. 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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