PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74036-1Coupling,air Conditioning-Heatin

Hdt Expeditionary Systems Inc · NSN 4520-01-324-6904 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-324-6904 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-324-6904. Primary manufacturer part number: 74036-1.
Features
  • Coupling,air Conditioning-Heatin — FSC 4520
  • End Length Beyond Bead: 1.000 INCHES NOMINAL IN
  • Style Designator: ROUND
  • Surface Treatment: ZINC
  • 5 verified cross-references
  • Primary manufacturer: Hdt Expeditionary Systems Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupling,air Conditioning-Heatin, cataloged under National Stock Number 4520-01-324-6904, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Hdt Expeditionary Systems Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-324-6904
Primary Part Number74036-1
Item NameCoupling,air Conditioning-Heatin
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerHdt Expeditionary Systems Inc
StatusACTIVE
End Length Beyond Bead1.000 INCHES NOMINAL IN
Style DesignatorROUND
Surface TreatmentZINC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5310-00-042-6903 INTERCHANGEABLE
Nut,plain,hexagon
2930-00-934-805974036 INTERCHANGEABLE
Core Assembly,radia
Komatsu America Corporation
4730-01-228-2698 INTERCHANGEABLE
Swing Joint,pipe
2910-01-367-751374036 INTERCHANGEABLE
Filter,fluid
DP Manufacturing Inc.
4730-01-604-135474036 INTERCHANGEABLE
Fitting,lubrication
Brunswick Corp Dba Mercury Marine Div Mercury Marine
Cross-Reference Index
Part NumberManufacturer
74036-1 PRIMARY Hdt Expeditionary Systems Inc (USA)
74036-1 Drs Environmental Systems Inc (USA)
74036-1 Keco Industries, Inc. (USA)
64C1004K3 Keco Industries, Inc. (USA)
74036 Keco Industries, Inc. (USA)
Related Parts
5310-00-042-6903INTERCHANGEABLE
NUT,PLAIN,HEXAGON
2930-00-934-8059INTERCHANGEABLE
CORE ASSEMBLY,RADIA
74036
4730-01-228-2698INTERCHANGEABLE
SWING JOINT,PIPE
2910-01-367-7513INTERCHANGEABLE
FILTER,FLUID
74036
4730-01-604-1354INTERCHANGEABLE
FITTING,LUBRICATION
74036

Frequently Asked Questions

What is NSN 4520-01-324-6904?

NSN 4520-01-324-6904 is a Coupling,air Conditioning-Heatin, manufactured by Hdt Expeditionary Systems Inc, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-324-6904?

NSN 4520-01-324-6904 has 5 cross-referenced part numbers: 74036-1 (Hdt Expeditionary Systems Inc), 74036-1 (Drs Environmental Systems Inc), 74036-1 (Keco Industries, Inc.), 64C1004K3 (Keco Industries, Inc.), 74036 (Keco Industries, Inc.).

What NSN replaces 4520-01-324-6904?

There are 5 known substitutes for 4520-01-324-6904: 5310-00-042-6903, 2930-00-934-8059, 4730-01-228-2698 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 74036-1?

Key specifications for 74036-1: End Length Beyond Bead: 1.000 INCHES NOMINAL IN; Style Designator: ROUND; Surface Treatment: ZINC; End Item Identification: 4520-00-057-9832. 6 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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