Scale Inscription/background Color: BLACK MARKINGS,WHITE BACKGROUND
Identification
NSN: 6685-00-334-6571
NIIN: 003346571
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-334-6571, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6685-00-334-6571
Item Name
Gage,pressure,dial Indicating
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Status
ACTIVE
Mounting Hole Quantity
3
Scale Accuracy
PORM 1 PERCENT OF RANGE SPAN
Scale Name
PRESSURE
Overall Diameter
4.969 INCHES NOMINAL IN
Actuation Type
BOURDON TUBE
Mounting Method
FLUSH FLANGE
Scale Inscription/background Color
BLACK MARKINGS,WHITE BACKGROUND
Scale Smallest Increment
20.0 POUNDS PER SQUARE INCH (PSI) LBS
Connection Type
EXTERNAL
Scale Range
+0.0 TO 3000.0 POUNDS PRESSURE PER SQUARE INCH LBS
Mounting Hole Diameter
0.219 INCHES NOMINAL IN
Pointer Type
INDICATING AND REFERENCE
Adjustability
ADJUSTABLE
Scale Type
SINGLE
Connector Type Vent
NOT PROVIDED
Dial Size
4-1/2 IN. DIA IN
Graduation Unit
1.0 POUNDS PER SQUARE INCH LBS
Bolt Circle Diameter
5.375 INCHES NOMINAL IN
Connection Location
BACK
Color
GRAY/GREY CASE
Pointer Color
BLACK
Surface Treatment
ENAMEL CASE
Unable to Decode
UNABLE TO DECODE
Material
NICKEL ALLOY ACTUATING ELEMENT
Material
PLASTIC PROTECTIVE CRYSTAL
Material
ALUMINUM CASE
Connection Quantity
1
Bezel Type
SNAP-ON
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
⇄Related Items11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6685-00-403-4883POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)
6685-00-432-7585POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)
6685-00-440-1113SA24-3PCF-RWAXPOSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)Weksler Glass Thermometer Corp
6685-00-469-2541SA24-3PJFRBAXPOSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)Weksler Glass Thermometer Corp
6685-00-479-3485POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)
6685-00-503-7250SA24-3PSFRBAXPOSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)Weksler Glass Thermometer Corp
6685-00-831-270945-1246P033BXBD6S31POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)Ashcroft Inc Dba Heise
6685-00-872-4766POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)
6685-00-872-4770POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)
6685-00-903-4897POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
SG4MC3KPBWANAX
2/2Government specification standardization
U.S. Government activity
MIL-G-18997
4/1Identification reference
U.S. Government activity
SA243PTFRWA0
5/9Secondary reference
Weksler Glass Thermometer Corp
MILI18997-2
5/9Secondary reference
U.S. Government activity
SA243PTFRWA0
5/1Secondary reference
Ashcroft Inc Dba Heise
Related Parts
6685-00-403-4883POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
6685-00-432-7585POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
6685-00-440-1113POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
SA24-3PCF-RWAX
6685-00-469-2541POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
SA24-3PJFRBAX
6685-00-479-3485POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
6685-00-503-7250POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
SA24-3PSFRBAX
6685-00-831-2709POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
45-1246P033BXBD6S31
6685-00-872-4766POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
6685-00-872-4770POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
6685-00-903-4897POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
6685-00-906-4007POSSIBLE MATCH
GAGE,PRESSURE,DIAL INDICATING
45-1246P33LXWDF031
Frequently Asked Questions
What is NSN 6685-00-334-6571?
NSN 6685-00-334-6571 is a Gage,pressure,dial Indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What NSN replaces 6685-00-334-6571?
11 possible matches (shared part number, not a government interchangeability claim): 6685-00-403-4883, 6685-00-432-7585, 6685-00-440-1113. Verify interchangeability with system specifications before substitution.
What are the specifications of 6685-00-334-6571?
Key specifications for 6685-00-334-6571: Mounting Hole Quantity: 3; Scale Accuracy: PORM 1 PERCENT OF RANGE SPAN; Scale Name: PRESSURE; Overall Diameter: 4.969 INCHES NOMINAL IN. 28 specifications are documented in the U.S. Government catalog.
Is NSN 6685-00-334-6571 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.