NSN 6685-01-204-5658 · NIIN 012045658 · Part number 138-0015.2
H O Trerice Co · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 78763
Government record, cited
NSN 6685-01-204-5658 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-204-5658. Manufacturer of record part number: 138-0015.2.
Also searched as6685-01-204-5658 ·
6685012045658 ·
NIIN 012045658 ·
01-204-5658 ·
FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 78763 · 138-0015.2
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 138-0015.2
Manufacturer: H O Trerice Co
General Description
The Thermowell, cataloged under National Stock Number 6685-01-204-5658, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is H O Trerice Co. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6685-01-204-5658
Primary Part Number
138-0015.2
Item Name
Thermowell
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer
H O Trerice Co
Status
ACTIVE
Style Designator
THREADED STRAIGHT SHANK
External Thread Size
3/4 IN. NPT IN
Bulb Tip Length
2.500 INCHES NOMINAL IN
Material
COPPER ALLOY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6685-00-001-1475
6685-00-001-1475 · Item name not on file
6685-00-001-1503
CONTROL,TOTALIZER
6685-00-001-1643
6685-00-001-1643 · Item name not on file
6685-00-001-1711
GAGE,PRESSURE,DIAL INDICATING
6685-00-001-2099
6685-00-001-2099 · Item name not on file
6685-00-001-2100
6685-00-001-2100 · Item name not on file
6685-00-001-2101
6685-00-001-2101 · Item name not on file
6685-00-001-2102
6685-00-001-2102 · Item name not on file
Frequently Asked Questions
What is NSN 6685-01-204-5658?
NSN 6685-01-204-5658 is a Thermowell, manufactured by H O Trerice Co, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What part numbers are listed for NSN 6685-01-204-5658?
NSN 6685-01-204-5658 has 1 manufacturer part number on file: 138-0015.2 (H O Trerice Co).
What are the specifications of 138-0015.2?
Key specifications for 138-0015.2: Style Designator: THREADED STRAIGHT SHANK; Overall Length: 3.500 INCHES NOMINAL IN; External Thread Size: 3/4 IN. NPT IN; Bulb Tip Length: 2.500 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.
Is NSN 6685-01-204-5658 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.