PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A702AFilter,gas

Thermal Gas Systems, Inc. · NSN 4240-01-551-6945 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-551-6945 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-551-6945. Primary manufacturer part number: A702A.
Features
  • Filter,gas — FSC 4240
  • 2 verified cross-references
  • Primary manufacturer: Thermal Gas Systems, Inc.
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,gas, cataloged under National Stock Number 4240-01-551-6945, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Thermal Gas Systems, Inc.. This item has 2 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
NSN4240-01-551-6945
Primary Part NumberA702A
Item NameFilter,gas
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerThermal Gas Systems, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5962-00-172-1019104-78 INTERCHANGEABLE
Microcircuit,linear
Astronautics Corporation of America
2925-00-673-4564A702AAP INTERCHANGEABLE
Cutout Relay,engine Generator
Te Connectivity Corporation
Cross-Reference Index
Part NumberManufacturer
A702A PRIMARY Thermal Gas Systems, Inc. (USA)
A702A Air-Met Scientific Pty Ltd (AUS)
Related Parts
5962-00-172-1019INTERCHANGEABLE
MICROCIRCUIT,LINEAR
104-78
2925-00-673-4564INTERCHANGEABLE
CUTOUT RELAY,ENGINE GENERATOR
A702AAP

Frequently Asked Questions

What is NSN 4240-01-551-6945?

NSN 4240-01-551-6945 is a Filter,gas, manufactured by Thermal Gas Systems, Inc., classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-551-6945?

NSN 4240-01-551-6945 has 2 cross-referenced part numbers: A702A (Thermal Gas Systems, Inc.), A702A (Air-Met Scientific Pty Ltd).

What NSN replaces 4240-01-551-6945?

There are 2 known substitutes for 4240-01-551-6945: 5962-00-172-1019, 2925-00-673-4564. Verify interchangeability with system specifications before substitution.

What are the specifications of A702A?

Key specifications for A702A: Part Name Assigned by Controlling Agency: INTERNAL FILTER ELEMENT; End Item Identification: HALOGUARD IT REMOTE SENSOR MODULEMODEL NUMBER 141-111 MOD. 2 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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