PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3905-G503Sensor,humidity

Howell Laboratories Inc Dba Howell Laboratories Inc · NSN 6685-01-386-6547 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-386-6547 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-386-6547. Primary manufacturer part number: 3905-G503.
Features
  • Sensor,humidity — FSC 6685
  • 5 verified cross-references
  • Primary manufacturer: Howell Laboratories Inc Dba Howell Laboratories Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Sensor,humidity, cataloged under National Stock Number 6685-01-386-6547, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-386-6547
Primary Part Number3905-G503
Item NameSensor,humidity
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerHowell Laboratories Inc Dba Howell Laboratories Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6240-00-044-42794535 INTERCHANGEABLE
Lamp,incandescent
American National Standards Institute Incorporated Dba American National Standards Institute
5365-00-145-50743905 INTERCHANGEABLE
Shim
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
3110-00-156-186272-6970-960 INTERCHANGEABLE
Bearing,ball,thrust
Fairbanks Morse, Llc
3895-00-161-1417 INTERCHANGEABLE
Brake Band Assy
5331-00-167-5166AS3208-05 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5930-00-188-10263953 INTERCHANGEABLE
Switch,toggle
Bryant Electric
5330-00-399-6935VT3394 INTERCHANGEABLE
Gasket
Cnh Industrial America Llc Dba Cnh America
5340-00-468-0840490722PC37 INTERCHANGEABLE
Seat,helical Compression Spring
Naval Sea Systems Command
8010-00-943-3174 INTERCHANGEABLE
Paint,screen Process
4820-00-998-60716255000 INTERCHANGEABLE
Valve,regulating,fluid Pressure
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Cross-Reference Index
Part NumberManufacturer
6446 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
6685PL0850911 Jednolity Indeks Materialowy - Uniform Material Index (POL)
6446 PIECE 32 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
3905-G503 PRIMARY Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
3905 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
Related Parts
6240-00-044-4279INTERCHANGEABLE
LAMP,INCANDESCENT
4535
5365-00-145-5074INTERCHANGEABLE
SHIM
3905
3110-00-156-1862INTERCHANGEABLE
BEARING,BALL,THRUST
72-6970-960
3895-00-161-1417INTERCHANGEABLE
BRAKE BAND ASSY
5331-00-167-5166INTERCHANGEABLE
O-RING
AS3208-05
5930-00-188-1026INTERCHANGEABLE
SWITCH,TOGGLE
3953
5330-00-399-6935INTERCHANGEABLE
GASKET
VT3394
5340-00-468-0840INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
490722PC37
8010-00-943-3174INTERCHANGEABLE
PAINT,SCREEN PROCESS
4820-00-998-6071INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
6255000
5360-01-022-0786INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6446
5330-01-132-6533INTERCHANGEABLE
PACKING,PREFORMED
3-905 NBR

Frequently Asked Questions

What is NSN 6685-01-386-6547?

NSN 6685-01-386-6547 is a Sensor,humidity, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-386-6547?

NSN 6685-01-386-6547 has 5 cross-referenced part numbers: 6446 (Howell Laboratories Inc Dba Howell Laboratories Inc), 6685PL0850911 (Jednolity Indeks Materialowy - Uniform Material Index), 6446 PIECE 32 (Howell Laboratories Inc Dba Howell Laboratories Inc), 3905-G503 (Howell Laboratories Inc Dba Howell Laboratories Inc), 3905 (Howell Laboratories Inc Dba Howell Laboratories Inc).

What NSN replaces 6685-01-386-6547?

There are 12 known substitutes for 6685-01-386-6547: 6240-00-044-4279, 5365-00-145-5074, 3110-00-156-1862 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3905-G503?

Key specifications for 3905-G503: End Item Identification: WASP CLASS LHD; TARAWA CLASS LHD; NIMITZ CLASS CVN. 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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