PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8371Thermometer,self-Indicating

Alter Harry Co the Div of T E C · NSN 6685-00-255-9981 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-255-9981 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-255-9981. Primary manufacturer part number: 8371.
Features
  • Thermometer,self-Indicating — FSC 6685
  • Scale Type: METALMETAL
  • Scale Smallest Increment: 10.0 DEG FAHRENHEIT10.0 DEG FAHRENHEIT
  • Actuating Medium: MERCURYMERCURY
  • Material: STEEL METER CASE
  • Scale Measurement Range: +200.000 TO 600.000 DEG FAHRENHEIT+200.000 TO 600.000 DEG FAHRENHEIT
  • Nondefinitive Spec/std Data: 6 CLASS
  • Design Type: FLUCTUATINGFLUCTUATING
Applications
  • Applications requiring Steel Meter Case construction
General Description

The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-255-9981, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Alter Harry Co the Div of T E C. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN6685-00-255-9981
Primary Part Number8371
Item NameThermometer,self-Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAlter Harry Co the Div of T E C
StatusCANCELLED
Scale TypeMETALMETAL
Scale Smallest Increment10.0 DEG FAHRENHEIT10.0 DEG FAHRENHEIT
Actuating MediumMERCURYMERCURY
MaterialSTEEL METER CASE
Scale Measurement Range+200.000 TO 600.000 DEG FAHRENHEIT+200.000 TO 600.000 DEG FAHRENHEIT
Nondefinitive Spec/std Data6 CLASS
Design TypeFLUCTUATINGFLUCTUATING
Style DesignatorETCHED STAINLESS STEEL SCALE
Securing Device TypeCLIPCLIP
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5975-00-054-2040 INTERCHANGEABLE
Junction Box
5960-00-248-1271 INTERCHANGEABLE
Electron Tube
5975-00-281-0051 INTERCHANGEABLE
Cover,junction Box
9390-00-359-0241FC5921 INTERCHANGEABLE
Bellows,protection
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
6210-00-491-0766436BR INTERCHANGEABLE
Fixture,lighting
Tinely Lighting Inc
3455-00-517-864357310 INTERCHANGEABLE
Cutter,milling,end
Morse Cutting Tools Div of Morse Cutting Tools Corp
2590-00-559-5628171-18875 INTERCHANGEABLE
Control Assembly,push-Pull
Danfoss Power Solutions II, Llc
4240-00-966-1357 INTERCHANGEABLE
Canister,wall Blank
5895-00-999-2434SM-D-546872 INTERCHANGEABLE
Case,electronic Communications E
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5935-01-010-10935921 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
Cross-Reference Index
Part NumberManufacturer
8371 PRIMARY Alter Harry Co the Div of T E C (USA)
GG-T-315 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
5921 Tycos Instruments Inc a Welch Allyn Co (USA)
Related Parts
5975-00-054-2040INTERCHANGEABLE
JUNCTION BOX
5960-00-248-1271INTERCHANGEABLE
ELECTRON TUBE
5975-00-281-0051INTERCHANGEABLE
COVER,JUNCTION BOX
9390-00-359-0241INTERCHANGEABLE
BELLOWS,PROTECTION
FC5921
6210-00-491-0766INTERCHANGEABLE
FIXTURE,LIGHTING
436BR
3455-00-517-8643INTERCHANGEABLE
CUTTER,MILLING,END
57310
2590-00-559-5628INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
171-18875
4240-00-966-1357INTERCHANGEABLE
CANISTER,WALL BLANK
5895-00-999-2434INTERCHANGEABLE
CASE,ELECTRONIC COMMUNICATIONS E
SM-D-546872
5935-01-010-1093INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5921
5340-01-051-5760INTERCHANGEABLE
STANDOFF,THREADED,SPACING
8371
5310-01-120-1286INTERCHANGEABLE
WASHER
5921

Frequently Asked Questions

What is NSN 6685-00-255-9981?

NSN 6685-00-255-9981 is a Thermometer,self-Indicating, manufactured by Alter Harry Co the Div of T E C, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-255-9981?

NSN 6685-00-255-9981 has 3 cross-referenced part numbers: 8371 (Alter Harry Co the Div of T E C), GG-T-315 (Federal Specifications Promulgated by General Services Administration Washington DC), 5921 (Tycos Instruments Inc a Welch Allyn Co).

What NSN replaces 6685-00-255-9981?

There are 12 known substitutes for 6685-00-255-9981: 5975-00-054-2040, 5960-00-248-1271, 5975-00-281-0051 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8371?

Key specifications for 8371: Scale Type: METALMETAL; Overall Length: 4.875 INCHES NOMINAL4.875 INCHES NOMINAL IN; Scale Smallest Increment: 10.0 DEG FAHRENHEIT10.0 DEG FAHRENHEIT; Actuating Medium: MERCURYMERCURY. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-255-9981 still in active supply?

NSN 6685-00-255-9981 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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