Thermometer, Self-Indicating6685-01-340-1818

NSN 6685-01-340-1818 · NIIN 013401818 · Part number AA5H9

Weksler Glass Thermometer Corp · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 64467

Government record, cited

NSN 6685-01-340-1818 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-340-1818. Manufacturer of record part number: AA5H9.

Also searched as 6685-01-340-1818 · 6685013401818 · NIIN 013401818 · 01-340-1818 · FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 64467 · AA5H9

Nearby stock numbers ← 6685-01-340-1815 Regulator, Temperature · 6685-01-340-1819 →

Features

Thermometer,self-Indicating — FSC 6685
Socket Overall Length: 4.250 INCHES NOMINAL4.250 INCHES NOMINAL IN
Stem Length: 3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN
Design Type: FLUCTUATINGFLUCTUATING
Actuating Medium: MERCURYMERCURY
Immersion Length: 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN
Scale Type: METALMETAL
External Thread Size: 3/4 IN. NPT3/4 IN. NPT IN

Identification

NSN: 6685-01-340-1818
NIIN: 013401818
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: AA5H9
Manufacturer: Weksler Glass Thermometer Corp

General Description

The Thermometer,self-Indicating, cataloged under National Stock Number 6685-01-340-1818, 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 Weksler Glass Thermometer Corp. Government technical data includes 11 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	6685-01-340-1818
Primary Part Number	AA5H9
Item Name	Thermometer,self-Indicating
FSC / FSG	6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer	Weksler Glass Thermometer Corp
Status	ACTIVE
Socket Overall Length	4.250 INCHES NOMINAL4.250 INCHES NOMINAL IN
Stem Length	3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN
Design Type	FLUCTUATINGFLUCTUATING
Actuating Medium	MERCURYMERCURY
Immersion Length	2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN
Scale Type	METALMETAL
External Thread Size	3/4 IN. NPT3/4 IN. NPT IN
Scale Length	9.000 INCHES NOMINAL9.000 INCHES NOMINAL IN
Internal Thread Size	3/4 IN. NPT3/4 IN. NPT IN
Material	ALUMINUM OVERALL
Tip Length	3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
AA5H9 PRIMARY	Weksler Glass Thermometer Corp (USA)

No interchangeability data on file.

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 6685-01-340-1818?

NSN 6685-01-340-1818 is a Thermometer,self-Indicating, manufactured by Weksler Glass Thermometer Corp, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.

What part numbers are listed for NSN 6685-01-340-1818?

NSN 6685-01-340-1818 has 1 manufacturer part number on file: AA5H9 (Weksler Glass Thermometer Corp).

What are the specifications of AA5H9?

Key specifications for AA5H9: Socket Overall Length: 4.250 INCHES NOMINAL4.250 INCHES NOMINAL IN; Stem Length: 3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN; Design Type: FLUCTUATINGFLUCTUATING; Actuating Medium: MERCURYMERCURY. 11 specifications are documented in the U.S. Government catalog.

Is NSN 6685-01-340-1818 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.

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