PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2109-5Altimeter,pressurized Compartmen

Kearflex Engineering Company · NSN 6685-01-112-9094 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-112-9094 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-112-9094. Primary manufacturer part number: 2109-5.
Features
  • Altimeter,pressurized Compartmen — FSC 6685
  • Mechanical Connection Quantity: 1
  • Scale Name: CABIN PRESSURE ALTITUDE
  • Mechanical Connection Type: INTERNAL UNF BOSS
  • Scale Marking: LETTERS AND NUMERALS AND LINED INCREMENTS
  • Mechanical Connection Size: 7/16-20 UNF PER MS33649-4
  • Nonluminous Scale Marking and Color: LINED INCREMENTS WHITE
  • Nonluminous Scale Marking and Color: NUMERALS WHITE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Altimeter,pressurized Compartmen, cataloged under National Stock Number 6685-01-112-9094, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Kearflex Engineering Company. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN6685-01-112-9094
Primary Part Number2109-5
Item NameAltimeter,pressurized Compartmen
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerKearflex Engineering Company
StatusACTIVE
Mechanical Connection Quantity1
Scale NameCABIN PRESSURE ALTITUDE
Mechanical Connection TypeINTERNAL UNF BOSS
Scale MarkingLETTERS AND NUMERALS AND LINED INCREMENTS
Mechanical Connection Size7/16-20 UNF PER MS33649-4
Nonluminous Scale Marking and ColorLINED INCREMENTS WHITE
Nonluminous Scale Marking and ColorNUMERALS WHITE
Scale Smallest Increment Graduation1000 FEET FT
Overall Diameter2.180 INCHES NOMINAL IN
Contact TypePIN
Scale Quantity1
Mounting MethodTHREADED BEZEL
Specification/standard Data81349-MIL-A-25933 GOVERNMENT SPECIFICATION AND 98810-24194 MANUFACTURERS SPECIFICATION
Scale Marking TransparencyNONLUMINOUS
Pointer ColorWHITE
Nondefinitive Spec/std DataAAU-3A/A TYPE A
Nonluminous Scale Marking and ColorLETTERS WHITE
Electrical Connection Identifying NumberDM5600-3P OR EQUIVALENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-078-0098 INTERCHANGEABLE
Altimeter,pressurized Compartmen
6685-00-148-97292109-2A INTERCHANGEABLE
Altimeter,pressurized Compartmen
Kearflex Engineering Company
3020-00-155-3163 INTERCHANGEABLE
Gear,spur
6685-00-226-5700CP1AAU3A12 INTERCHANGEABLE
Altimeter,pressurized Compartmen
Aerosonic Llc
5330-00-253-8069 INTERCHANGEABLE
Seal,plain Encased
5998-00-563-0607 INTERCHANGEABLE
Circuit Card Assembly
6685-00-725-9117 INTERCHANGEABLE
Altimeter,pressurized Compartmen
5905-00-799-36832100-0065 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Keysight Technologies Inc
6685-00-853-3488CP1AAU3A INTERCHANGEABLE
Altimeter,pressurized Compartmen
Aerosonic Llc
5970-01-388-258521095 INTERCHANGEABLE
Insulator,standoff
Science Applications International Corporation
Cross-Reference Index
Part NumberManufacturer
2109-5 PRIMARY Kearflex Engineering Company (USA)
6685PL2067099 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MIL-A-25933 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AAU-3A/A Joint Electronics Type Designation System (USA)
Related Parts
6685-00-078-0098INTERCHANGEABLE
ALTIMETER,PRESSURIZED COMPARTMEN
6685-00-148-9729INTERCHANGEABLE
ALTIMETER,PRESSURIZED COMPARTMEN
2109-2A
3020-00-155-3163INTERCHANGEABLE
GEAR,SPUR
6685-00-226-5700INTERCHANGEABLE
ALTIMETER,PRESSURIZED COMPARTMEN
CP1AAU3A12
5330-00-253-8069INTERCHANGEABLE
SEAL,PLAIN ENCASED
5998-00-563-0607INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6685-00-725-9117INTERCHANGEABLE
ALTIMETER,PRESSURIZED COMPARTMEN
5905-00-799-3683INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
2100-0065
6685-00-853-3488INTERCHANGEABLE
ALTIMETER,PRESSURIZED COMPARTMEN
CP1AAU3A
5970-01-388-2585INTERCHANGEABLE
INSULATOR,STANDOFF
21095
5998-01-432-2740INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21095
3040-01-439-5323INTERCHANGEABLE
SHAFT,SHOULDERED
2109-5

Frequently Asked Questions

What is NSN 6685-01-112-9094?

NSN 6685-01-112-9094 is a Altimeter,pressurized Compartmen, manufactured by Kearflex Engineering Company, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-112-9094?

NSN 6685-01-112-9094 has 4 cross-referenced part numbers: 2109-5 (Kearflex Engineering Company), 6685PL2067099 (Jednolity Indeks Materialowy - Uniform Material Index), MIL-A-25933 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AAU-3A/A (Joint Electronics Type Designation System).

What NSN replaces 6685-01-112-9094?

There are 12 known substitutes for 6685-01-112-9094: 6685-00-078-0098, 6685-00-148-9729, 3020-00-155-3163 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2109-5?

Key specifications for 2109-5: Mechanical Connection Quantity: 1; Scale Name: CABIN PRESSURE ALTITUDE; Mechanical Connection Type: INTERNAL UNF BOSS; Scale Marking: LETTERS AND NUMERALS AND LINED INCREMENTS. 23 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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