PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51-8073Combustible Gas Indicator Set,po

Bacharach, Inc. · NSN 6665-01-294-8859 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-01-294-8859 — this item is cataloged by the U.S. Government under National Stock Number 6665-01-294-8859. Primary manufacturer part number: 51-8073.
Features
  • Combustible Gas Indicator Set,po — FSC 6665
  • Usage Design: DETECTS TOXIC AND COMBUSTIBLE LEVELS OF COMBUSTIBLE GASSES AND COMBUSTIBLE VAPORS
  • Supply Items and Quantities: ITEM INCLUDES CARRYING CASE 1;METHANE CALIBRATION TANK 1;15 FT HOSE ASSY 1;SAMPLE LINE KIT 1;230 VAC CHARGER CORD 1;12 VDC CHARGER CORD 1;DRYING TUBE 1;CARRYING STRAP 1;PROBE ASSEMBLY 1;OXY CELL ASSY 1;REGULATOR ASSY 1;15 FT HOSE ASSY 1;HYDROGEN CALIBRATION TANK 1;INDICATOR AND ALARM 1 VDC
  • Component Quantity: 15
  • Criticality Code Justification: FEAT
  • Reference Data and Literature: T.O. 11H5-35-1
  • 2 verified cross-references
  • Primary manufacturer: Bacharach, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Combustible Gas Indicator Set,po, cataloged under National Stock Number 6665-01-294-8859, is classified within Federal Supply Class 6665 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Bacharach, Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6665-01-294-8859
Primary Part Number51-8073
Item NameCombustible Gas Indicator Set,po
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerBacharach, Inc.
StatusCANCELLED
Usage DesignDETECTS TOXIC AND COMBUSTIBLE LEVELS OF COMBUSTIBLE GASSES AND COMBUSTIBLE VAPORS
Supply Items and QuantitiesITEM INCLUDES CARRYING CASE 1;METHANE CALIBRATION TANK 1;15 FT HOSE ASSY 1;SAMPLE LINE KIT 1;230 VAC CHARGER CORD 1;12 VDC CHARGER CORD 1;DRYING TUBE 1;CARRYING STRAP 1;PROBE ASSEMBLY 1;OXY CELL ASSY 1;REGULATOR ASSY 1;15 FT HOSE ASSY 1;HYDROGEN CALIBRATION TANK 1;INDICATOR AND ALARM 1 VDC
Component Quantity15
Criticality Code JustificationFEAT
Reference Data and LiteratureT.O. 11H5-35-1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6665-00-181-2438 INTERCHANGEABLE
Combustible Gas Indicator Set,po
6665-00-181-2443 INTERCHANGEABLE
Combustible Gas Indicator Set,po
6665-00-182-77197958 INTERCHANGEABLE
Combustible Gas Indicator Set,po
Bacharach, Inc.
6665-00-490-247916386 INTERCHANGEABLE
Combustible Gas Indicator Set,po
Davis Inotek Instruments, Llc Dba Davis Calibration
6665-00-495-87367958-1 INTERCHANGEABLE
Combustible Gas Indicator Set,po
Bacharach, Inc.
6665-00-526-8103M5 INTERCHANGEABLE
Combustible Gas Indicator Set,po
Avox Systems Inc Dba Avox Systems Inc
6665-00-530-0985 INTERCHANGEABLE
Combustible Gas Indicator Set,po
5330-00-734-6579518073 INTERCHANGEABLE
Gasket
Sealcraft Corporation
6665-00-823-5637 INTERCHANGEABLE
Combustible Gas Indicator Set,po
6665-00-941-6554 INTERCHANGEABLE
Combustible Gas Indicator Set,po
Cross-Reference Index
Part NumberManufacturer
MIL-I-38715 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
51-8073 PRIMARY Bacharach, Inc. (USA)
Related Parts
6665-00-181-2438INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
6665-00-181-2443INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
6665-00-182-7719INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
7958
6665-00-490-2479INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
16386
6665-00-495-8736INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
7958-1
6665-00-526-8103INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
M5
6665-00-530-0985INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
5330-00-734-6579INTERCHANGEABLE
GASKET
518073
6665-00-823-5637INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
6665-00-941-6554INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
6665-00-978-3045INTERCHANGEABLE
COMBUSTIBLE GAS INDICATOR SET,PO
SANE10TYPER2
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464284

Frequently Asked Questions

What is NSN 6665-01-294-8859?

NSN 6665-01-294-8859 is a Combustible Gas Indicator Set,po, manufactured by Bacharach, Inc., classified under FSC 6665 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6665-01-294-8859?

NSN 6665-01-294-8859 has 2 cross-referenced part numbers: MIL-I-38715 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 51-8073 (Bacharach, Inc.).

What NSN replaces 6665-01-294-8859?

There are 12 known substitutes for 6665-01-294-8859: 6665-00-181-2438, 6665-00-181-2443, 6665-00-182-7719 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51-8073?

Key specifications for 51-8073: Usage Design: DETECTS TOXIC AND COMBUSTIBLE LEVELS OF COMBUSTIBLE GASSES AND COMBUSTIBLE VAPORS; Special Features: INTERNAL RECHARGEABLE SEALED LEAD ACID BATTERY;DETECTS FOLLOWING GASSES AND VAPORTS: JP-4, JP-5, JP-8, PF-1, JP-10, PR-148, AVIATION GAS 100-130 OCTANE, EHTYL ALCHOHOL, HYDROGEN, BENZENE, METHANE, HEXANE, PENTANE AND HEPTANE; DETECTION RANGE 0-5 OR 0-50 PERCENT LEL COMBUSTIBLES AND 0-25 PERCENT OXY;THE COMBUSTIBLE SENSOR AND MAIN PRINTED CIRCUIT BOARD OF INDICATOR CONTAIN ESD DEVICES; Supply Items and Quantities: ITEM INCLUDES CARRYING CASE 1;METHANE CALIBRATION TANK 1;15 FT HOSE ASSY 1;SAMPLE LINE KIT 1;230 VAC CHARGER CORD 1;12 VDC CHARGER CORD 1;DRYING TUBE 1;CARRYING STRAP 1;PROBE ASSEMBLY 1;OXY CELL ASSY 1;REGULATOR ASSY 1;15 FT HOSE ASSY 1;HYDROGEN CALIBRATION TANK 1;INDICATOR AND ALARM 1 VDC; Component Quantity: 15. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6665-01-294-8859 still in active supply?

NSN 6665-01-294-8859 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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