PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

399-800000-000Detector,gas

Teledyne Detcon, Inc. · NSN 6665-01-443-1951 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-01-443-1951 — this item is cataloged by the U.S. Government under National Stock Number 6665-01-443-1951. Primary manufacturer part number: 399-800000-000.
Features
  • Detector,gas — FSC 6665
  • 3 verified cross-references
  • Primary manufacturer: Teledyne Detcon, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Detector,gas, cataloged under National Stock Number 6665-01-443-1951, is classified within Federal Supply Class 6665 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Teledyne Detcon, Inc.. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameDetector,gas
FSC / FSG6665 — No Item Name Available (FSG 66)
ManufacturersTeledyne Detcon, Inc. (CAGE 0XL44)
Technical Specifications
ParameterValue
NSN6665-01-443-1951
Primary Part Number399-800000-000
Item NameDetector,gas
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerTeledyne Detcon, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5305-00-021-591213K10 INTERCHANGEABLE
Screw,cap,hexagon Head
Briggs and Stratton Corp
5977-00-052-4761XA-10103C INTERCHANGEABLE
Holder,electrical Contact Brush
Conductix Inc Div Conductix Wampfler
5920-00-142-7439BK-S-8002-1X-R INTERCHANGEABLE
Fuseholder,block
Cooper Bussmann, Llc Dba Cooper Industries
9540-00-251-2620 INTERCHANGEABLE
Angle,structural
6625-00-668-6716 INTERCHANGEABLE
Ammeter
5120-00-873-3998 INTERCHANGEABLE
Hook
6240-00-944-1267 INTERCHANGEABLE
Lamp,incandescent
6515-01-162-19573998 INTERCHANGEABLE
Stapler,surgical
Solventum Us Llc
6145-01-164-64543998 INTERCHANGEABLE
Cable,special Purpose,electrical
Cableco Inc
5330-01-494-785739-98 INTERCHANGEABLE
Seal,plain
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
Cross-Reference Index
Part NumberManufacturer
3998 Teledyne Detcon, Inc. (USA)
399-800000-000 PRIMARY Teledyne Detcon, Inc. (USA)
3998B Teledyne Detcon, Inc. (USA)
Related Parts
5305-00-021-5912INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
13K10
5977-00-052-4761INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
XA-10103C
5920-00-142-7439INTERCHANGEABLE
FUSEHOLDER,BLOCK
BK-S-8002-1X-R
9540-00-251-2620INTERCHANGEABLE
ANGLE,STRUCTURAL
6625-00-668-6716INTERCHANGEABLE
AMMETER
5120-00-873-3998INTERCHANGEABLE
HOOK
6240-00-944-1267INTERCHANGEABLE
LAMP,INCANDESCENT
6515-01-162-1957INTERCHANGEABLE
STAPLER,SURGICAL
3998
6145-01-164-6454INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
3998
5330-01-494-7857INTERCHANGEABLE
SEAL,PLAIN
39-98

Frequently Asked Questions

What is NSN 6665-01-443-1951?

NSN 6665-01-443-1951 is a Detector,gas, manufactured by Teledyne Detcon, Inc., classified under FSC 6665 (No Item Name Available). Status: active.

What are the part numbers for NSN 6665-01-443-1951?

NSN 6665-01-443-1951 has 3 cross-referenced part numbers: 3998 (Teledyne Detcon, Inc.), 399-800000-000 (Teledyne Detcon, Inc.), 3998B (Teledyne Detcon, Inc.).

What NSN replaces 6665-01-443-1951?

There are 10 known substitutes for 6665-01-443-1951: 5305-00-021-5912, 5977-00-052-4761, 5920-00-142-7439 and 7 more. Verify interchangeability with system specifications before substitution.

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