PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

251-21Thermometer,indicating,capillary

Shinko Ind. Ltd · NSN 6685-01-426-4789 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-426-4789 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-426-4789. Primary manufacturer part number: 251-21.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • 4 verified cross-references
  • Primary manufacturer: Shinko Ind. Ltd
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-01-426-4789, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Shinko Ind. Ltd. This item has 4 commercial cross-references from 3 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
NSN6685-01-426-4789
Primary Part Number251-21
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerShinko Ind. Ltd
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4820-00-032-882625121 INTERCHANGEABLE
Seat,valve
Meggitt North Hollywood Inc
4530-00-080-734825121 INTERCHANGEABLE
Piston Assembly,fuel Unit
Danfoss Inc
5133-00-228-1332 INTERCHANGEABLE
Drill,twist
5360-00-263-456325121 INTERCHANGEABLE
Spring,helical,compression
Honeywell International Inc. Div Aerospace - Torrance
5330-00-715-5144 INTERCHANGEABLE
Gasket
5331-01-091-847325-121 INTERCHANGEABLE
O-Ring
Stewart & Stevenson Power Products Llc
3455-01-236-792425121 INTERCHANGEABLE
Cutter,milling,end
Niagara Cutter Inc
4720-01-537-7776 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
251-21 PRIMARY Shinko Ind. Ltd (JPN)
TH23007-LE IT T Fuji Trading (america) Inc. (USA)
TH23007-LE IT T Fuji Trading America Inc (USA)
251-21 Shinko Ind. Ltd (JPN)
Related Parts
4820-00-032-8826INTERCHANGEABLE
SEAT,VALVE
25121
4530-00-080-7348INTERCHANGEABLE
PISTON ASSEMBLY,FUEL UNIT
25121
5133-00-228-1332INTERCHANGEABLE
DRILL,TWIST
5360-00-263-4563INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
25121
5330-00-715-5144INTERCHANGEABLE
GASKET
5331-01-091-8473INTERCHANGEABLE
O-RING
25-121
3455-01-236-7924INTERCHANGEABLE
CUTTER,MILLING,END
25121
4720-01-537-7776INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC

Frequently Asked Questions

What is NSN 6685-01-426-4789?

NSN 6685-01-426-4789 is a Thermometer,indicating,capillary, manufactured by Shinko Ind. Ltd, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-426-4789?

NSN 6685-01-426-4789 has 4 cross-referenced part numbers: 251-21 (Shinko Ind. Ltd), TH23007-LE IT T (Fuji Trading (america) Inc.), TH23007-LE IT T (Fuji Trading America Inc), 251-21 (Shinko Ind. Ltd).

What NSN replaces 6685-01-426-4789?

There are 8 known substitutes for 6685-01-426-4789: 4820-00-032-8826, 4530-00-080-7348, 5133-00-228-1332 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 251-21?

Key specifications for 251-21: End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 1 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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