PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77-1Thermometer,self-Indicating

Princo Instruments, Inc · NSN 6685-00-894-4514 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-894-4514 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-894-4514. Primary manufacturer part number: 77-1.
Features
  • Thermometer,self-Indicating — FSC 6685
  • Actuating Medium: MERCURYMERCURY
  • Securing Device Type: CLIPCLIP
  • Scale Smallest Increment: 0.2 DEG FAHRENHEIT0.2 DEG FAHRENHEIT
  • Scale Measurement Range: +25.000 TO 140.000 DEG FAHRENHEIT+25.000 TO 140.000 DEG FAHRENHEIT
  • Material: GLASS OVERALL
  • Features Provided: EXPANSION CHAMBEREXPANSION CHAMBER
  • Scale Type: ETCHED STEMETCHED STEM
Applications
  • Applications requiring Glass Overall construction
General Description

The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-894-4514, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Princo Instruments, Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-894-4514
Primary Part Number77-1
Item NameThermometer,self-Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerPrinco Instruments, Inc
StatusACTIVE
Actuating MediumMERCURYMERCURY
Securing Device TypeCLIPCLIP
Scale Smallest Increment0.2 DEG FAHRENHEIT0.2 DEG FAHRENHEIT
Scale Measurement Range+25.000 TO 140.000 DEG FAHRENHEIT+25.000 TO 140.000 DEG FAHRENHEIT
MaterialGLASS OVERALL
Features ProvidedEXPANSION CHAMBEREXPANSION CHAMBER
Scale TypeETCHED STEMETCHED STEM
Style DesignatorIMMERSION RING TOP
Design TypeFLUCTUATINGFLUCTUATING
Scale Inscription/background ColorBLACK MARKINGS ON YELLOWBLACK MARKINGS ON YELLOW
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5310-00-038-2321U70002 INTERCHANGEABLE
Washer,flat
Eastman Kodak Co
6625-00-172-662570002 INTERCHANGEABLE
Bridge,resistance
Central Scientific Co Educational
5120-00-541-555612102 INTERCHANGEABLE
Key,socket Head Screw
Bondhus Corp
5315-00-616-5515103904 INTERCHANGEABLE
Key,woodruff
Rolls-Royce Solutions America Inc
5940-00-763-6151 INTERCHANGEABLE
Terminal,stud
1005-01-480-451570002 INTERCHANGEABLE
Retainer,gun Component
Benelli U.s.a. Corporation
6230-01-513-193470002 INTERCHANGEABLE
Led,safety Kit
The Arc of Bergen and Passaic Counties Inc
4130-01-578-162970002 INTERCHANGEABLE
Evaporator Coil,refrigeration
Applied Companies
Cross-Reference Index
Part NumberManufacturer
77-1 PRIMARY Princo Instruments, Inc (USA)
20092M-01 Palmer Instruments Inc. Dba Palmer Instruments Inc (USA)
7000-2 Production Devices (USA)
402CP45 Weksler Glass Thermometer Corp (USA)
7000-2 Psg Controls, Inc. (USA)
Related Parts
5310-00-038-2321INTERCHANGEABLE
WASHER,FLAT
U70002
6625-00-172-6625INTERCHANGEABLE
BRIDGE,RESISTANCE
70002
5120-00-541-5556INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
12102
5315-00-616-5515INTERCHANGEABLE
KEY,WOODRUFF
103904
5940-00-763-6151INTERCHANGEABLE
TERMINAL,STUD
1005-01-480-4515INTERCHANGEABLE
RETAINER,GUN COMPONENT
70002
6230-01-513-1934INTERCHANGEABLE
LED,SAFETY KIT
70002
4130-01-578-1629INTERCHANGEABLE
EVAPORATOR COIL,REFRIGERATION
70002

Frequently Asked Questions

What is NSN 6685-00-894-4514?

NSN 6685-00-894-4514 is a Thermometer,self-Indicating, manufactured by Princo Instruments, Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-894-4514?

NSN 6685-00-894-4514 has 5 cross-referenced part numbers: 77-1 (Princo Instruments, Inc), 20092M-01 (Palmer Instruments Inc. Dba Palmer Instruments Inc), 7000-2 (Production Devices), 402CP45 (Weksler Glass Thermometer Corp), 7000-2 (Psg Controls, Inc.).

What NSN replaces 6685-00-894-4514?

There are 8 known substitutes for 6685-00-894-4514: 5310-00-038-2321, 6625-00-172-6625, 5120-00-541-5556 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 77-1?

Key specifications for 77-1: Actuating Medium: MERCURYMERCURY; Securing Device Type: CLIPCLIP; Scale Smallest Increment: 0.2 DEG FAHRENHEIT0.2 DEG FAHRENHEIT; Scale Measurement Range: +25.000 TO 140.000 DEG FAHRENHEIT+25.000 TO 140.000 DEG FAHRENHEIT. 11 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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