PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81 01 681Indicator Tube,gas

Draeger Inc · NSN 6665-01-588-0299 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-01-588-0299 — this item is cataloged by the U.S. Government under National Stock Number 6665-01-588-0299. Primary manufacturer part number: 81 01 681.
Features
  • Indicator Tube,gas — FSC 6665
  • Operation Method: HAND OPERATED
  • 2 verified cross-references
  • Primary manufacturer: Draeger Inc
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Indicator Tube,gas, cataloged under National Stock Number 6665-01-588-0299, is classified within Federal Supply Class 6665 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Draeger Inc. Government technical data includes 1 verified specification, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6665-01-588-0299
Primary Part Number81 01 681
Item NameIndicator Tube,gas
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerDraeger Inc
StatusACTIVE
Operation MethodHAND OPERATED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3010-00-726-8496029-100110 INTERCHANGEABLE
Coupling,shaft,flexible
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
Cross-Reference Index
Part NumberManufacturer
81 01 681 PRIMARY Draeger Inc (USA)
81 01 681 Draeger Safety, Inc. (USA)
Related Parts
3010-00-726-8496INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
029-100110

Frequently Asked Questions

What is NSN 6665-01-588-0299?

NSN 6665-01-588-0299 is a Indicator Tube,gas, manufactured by Draeger Inc, classified under FSC 6665 (No Item Name Available). Status: active.

What are the part numbers for NSN 6665-01-588-0299?

NSN 6665-01-588-0299 has 2 cross-referenced part numbers: 81 01 681 (Draeger Inc), 81 01 681 (Draeger Safety, Inc.).

What NSN replaces 6665-01-588-0299?

There is 1 known substitute for 6665-01-588-0299: 3010-00-726-8496. Verify interchangeability with system specifications before substitution.

What are the specifications of 81 01 681?

Key specifications for 81 01 681: Operation Method: HAND OPERATED; Special Features: MEASURING RANGE: 1 TO 10 PPM; NUMBER OF STROKES: 10; COLOUR CHANGE: BLUE TO YELLOW; Part Name Assigned by Controlling Agency: HYDROCHLORIC ACID,NITRIC ACID. 3 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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