PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P601 1/4LM2 1/2IN-3000PSIGage,pressure,dial Indicating

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-239-5700 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-239-5700 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-239-5700. Primary manufacturer part number: P601 1/4LM2 1/2IN-3000PSI.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Material: GLASS PROTECTIVE CRYSTAL
  • Material: BRASS AND PLASTIC POLYCARBONATE CASE
  • Overall Diameter: 2.813 INCHES NOMINAL IN
  • Connection Location: BOTTOM
  • Connection Quantity: 1
  • Scale Range: +0.0 TO 3000.0 POUNDS PRESSURE PER SQUARE INCH LBS
  • Scale Inscription/background Color: BLACK MARKINGS ON WHITE BACKGROUND
Applications
  • Applications requiring Glass Protective Crystal construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-239-5700, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ametek, Inc. Div Aerospace & Defense. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-239-5700
Primary Part NumberP601 1/4LM2 1/2IN-3000PSI
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusCANCELLED
MaterialGLASS PROTECTIVE CRYSTAL
MaterialBRASS AND PLASTIC POLYCARBONATE CASE
Overall Diameter2.813 INCHES NOMINAL IN
Connection LocationBOTTOM
Connection Quantity1
Scale Range+0.0 TO 3000.0 POUNDS PRESSURE PER SQUARE INCH LBS
Scale Inscription/background ColorBLACK MARKINGS ON WHITE BACKGROUND
Connection TypeEXTERNAL
AdjustabilityNONADJUSTABLE
Connector Type VentNOT PROVIDED
Scale Accuracy2 PCT MIDDLE HALF OF RANGE,3 PCT REMAINDER
Graduation Unit500.0 POUNDS PER SQUARE INCH LBS
Bezel TypeTHREAD
Pointer TypeINDICATING
Nondefinitive Spec/std Data1 POLISHED
MaterialCOPPER ALLOY ACTUATING ELEMENT
Scale NamePRESSURE
Pointer ColorBLACK
Dial Size2-1/2 IN. DIA IN
Mounting Connection LocationBOTTOM
Actuation TypeSINGLE BOURDON TUBE
Scale TypeSINGLE
Connection Size0.250 IN. NPT DIA IN
Mounting MethodRIGID STEM
Scale Smallest Increment100.0 POUNDS PER SQUARE INCH (PSI) LBS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
4320-00-082-5942 INTERCHANGEABLE
Ring,wearing
6685-00-117-5490136772A INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6625-00-146-6657 INTERCHANGEABLE
Scale Magnifier
6685-00-171-9815841-0054 INTERCHANGEABLE
Gage,pressure,dial Indicating
Boc Group Inc the
6625-00-223-4811 INTERCHANGEABLE
Bridge,inductance
6685-00-526-9283A3670 INTERCHANGEABLE
Gage,pressure,dial Indicating
Metadure Parts & Sales, Inc.
6685-00-628-4205100106 INTERCHANGEABLE
Gage,pressure,dial Indicating
Metadure Parts & Sales, Inc.
3120-01-303-3934P54-6 INTERCHANGEABLE
Bearing,sleeve
Bunting Bearings Corp
Cross-Reference Index
Part NumberManufacturer
M1024PC4014 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
667A Ametek, Inc. Div Aerospace & Defense (USA)
120 Nageldinger John and Sons Inc (USA)
45510-0 Ametek, Inc. Div Aerospace & Defense (USA)
12Z6012-37 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
P546 Ametek, Inc. Div Aerospace & Defense (USA)
795605 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
229003PC2 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
332-2545-010 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
795605 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
1160 Rego Co a Marmon Group Co (USA)
4014 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
C248A Desco Corp Marsh Bellofram Div (USA)
P601 1/4LM2 1/2IN-3000PSI PRIMARY Ametek, Inc. Div Aerospace & Defense (USA)
Related Parts
4320-00-082-5942INTERCHANGEABLE
RING,WEARING
6685-00-117-5490INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
136772A
6625-00-146-6657INTERCHANGEABLE
SCALE MAGNIFIER
6685-00-171-9815INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
841-0054
6625-00-223-4811INTERCHANGEABLE
BRIDGE,INDUCTANCE
6685-00-526-9283INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
A3670
6685-00-628-4205INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
100106
3120-01-303-3934INTERCHANGEABLE
BEARING,SLEEVE
P54-6

Frequently Asked Questions

What is NSN 6685-00-239-5700?

NSN 6685-00-239-5700 is a Gage,pressure,dial Indicating, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-239-5700?

NSN 6685-00-239-5700 has 14 cross-referenced part numbers: M1024PC4014 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 667A (Ametek, Inc. Div Aerospace & Defense), 120 (Nageldinger John and Sons Inc), 45510-0 (Ametek, Inc. Div Aerospace & Defense), 12Z6012-37 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 9 more.

What NSN replaces 6685-00-239-5700?

There are 8 known substitutes for 6685-00-239-5700: 4320-00-082-5942, 6685-00-117-5490, 6625-00-146-6657 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P601 1/4LM2 1/2IN-3000PSI?

Key specifications for P601 1/4LM2 1/2IN-3000PSI: Material: GLASS PROTECTIVE CRYSTAL; Material: BRASS AND PLASTIC POLYCARBONATE CASE; Overall Diameter: 2.813 INCHES NOMINAL IN; Connection Location: BOTTOM. 27 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-239-5700 still in active supply?

NSN 6685-00-239-5700 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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