PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7859Hygrothermograph

Davis Instruments · NSN 6685-01-463-9849 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-463-9849 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-463-9849. Primary manufacturer part number: 7859.
Features
  • Hygrothermograph — FSC 6685
  • Material: PLASTIC OUTER JACKET INSULATION/SHEATHING
  • Unit Type: FLUSH
  • 2 verified cross-references
  • Primary manufacturer: Davis Instruments
Applications
  • Applications requiring Plastic Outer Jacket Insulation/sheathing construction
General Description

The Hygrothermograph, cataloged under National Stock Number 6685-01-463-9849, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Davis Instruments. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-463-9849
Primary Part Number7859
Item NameHygrothermograph
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerDavis Instruments
StatusACTIVE
MaterialPLASTIC OUTER JACKET INSULATION/SHEATHING
Unit TypeFLUSH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5935-00-056-7568 INTERCHANGEABLE
Cover,electrical Connector
2805-00-383-899173S03 INTERCHANGEABLE
Ring Set,piston
Spirolox Inc
5330-00-851-775913385 INTERCHANGEABLE
Seal,plain Encased
Garwood/feller Inc Garwood Winch Div
5315-01-151-86727859 INTERCHANGEABLE
Pin
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
Cross-Reference Index
Part NumberManufacturer
7859 PRIMARY Davis Instruments (USA)
7859 Jcb Instruments (AUS)
Related Parts
5935-00-056-7568INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
2805-00-383-8991INTERCHANGEABLE
RING SET,PISTON
73S03
5330-00-851-7759INTERCHANGEABLE
SEAL,PLAIN ENCASED
13385
5315-01-151-8672INTERCHANGEABLE
PIN
7859

Frequently Asked Questions

What is NSN 6685-01-463-9849?

NSN 6685-01-463-9849 is a Hygrothermograph, manufactured by Davis Instruments, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-463-9849?

NSN 6685-01-463-9849 has 2 cross-referenced part numbers: 7859 (Davis Instruments), 7859 (Jcb Instruments).

What NSN replaces 6685-01-463-9849?

There are 4 known substitutes for 6685-01-463-9849: 5935-00-056-7568, 2805-00-383-8991, 5330-00-851-7759 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7859?

Key specifications for 7859: Special Features: CABLE, 40 IN. IN; End Item Identification: WEATHER MONITOR, DAVIS INSTRUMENTS, MODEL 7440; Material: PLASTIC OUTER JACKET INSULATION/SHEATHING; Unit Type: FLUSH. 4 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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