PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P645FFGage,pressure,dial Indicating

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-618-6696 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-618-6696 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-618-6696. Primary manufacturer part number: P645FF.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Surface Treatment: PAINT CASE
  • Color: BLACK CASE
  • Material: BRONZE ACTUATING ELEMENT
  • Mounting Hole Diameter: 0.141 INCHES NOMINAL IN
  • Overall Diameter: 2.840 INCHES NOMINAL IN
  • Material: PLASTIC AND STEEL CASE
  • Scale Inscription/background Color: BLACK FIGURES ON WHITE BACKGROUND
Applications
  • Applications requiring Bronze Actuating Element construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-618-6696, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 19 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-618-6696
Primary Part NumberP645FF
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusCANCELLED
Surface TreatmentPAINT CASE
ColorBLACK CASE
MaterialBRONZE ACTUATING ELEMENT
Mounting Hole Diameter0.141 INCHES NOMINAL IN
Overall Diameter2.840 INCHES NOMINAL IN
MaterialPLASTIC AND STEEL CASE
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Bezel TypeTHREAD
Connection TypeEXTERNAL
Scale Accuracy2 PCT MIDDLE 3RD OF RANGE
Mounting MethodFLUSH PANEL
Scale TypeSINGLE
Actuation TypeSINGLE BOURDON TUBE
Connection LocationCENTER BACK
Dial Size2 IN. DIA IN
AdjustabilityNONADJUSTABLE
Connector Type VentNOT PROVIDED
Pointer ColorBLACK
Connection Size0.125 IN. NPT IN
Graduation Unit10.0 POUNDS PER SQUARE INCH LBS
Scale NamePRESSURE
Mounting Hole Quantity3
Connection Quantity1
Pointer TypeINDICATING
Scale Range+0.0 TO 60.0 POUNDS PRESSURE PER SQUARE INCH LBS
Scale Smallest Increment2.0 POUNDS PER SQUARE INCH (PSI) LBS
Bolt Circle Diameter2.500 INCHES NOMINAL IN
MaterialPLASTIC PROTECTIVE CRYSTAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6695-00-013-480510650 INTERCHANGEABLE
Meter Movement
Astronautics Corporation of America
6685-00-074-4669164456 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-00-088-0059164444 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-00-089-44802 1-2 1DFFM1-8 02T060 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
5330-00-164-880910650 INTERCHANGEABLE
Pump Repair Kit
Oberdorfer Foundries Inc
2920-00-237-0115YB79 INTERCHANGEABLE
Stator,engine Generator
Wisconsin Motors, Llc
5310-00-270-207210650 INTERCHANGEABLE
Washer,flat
Garwood/feller Inc Garwood Winch Div
6685-00-401-2337 INTERCHANGEABLE
Gage,pressure,dial Indicating
3040-00-437-1040 INTERCHANGEABLE
Cam,control
6685-00-489-0727164416 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
Cross-Reference Index
Part NumberManufacturer
P645FF Ametek, Inc. Div Aerospace & Defense (USA)
309268 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
P845FF-2 IN.1/8B 0/60 Ametek, Inc. Div Aerospace & Defense (USA)
100771-08 National Micronetics Inc Pacific Div (USA)
G10940-23KD Liftec Inc Div Liftec, Inc. (USA)
ADP4714 Dielectric Products Co Inc (USA)
80770-0500-05 Harsco Corp Bmy-Combat Systems Div (USA)
P845FF Ametek, Inc. Div Aerospace & Defense (USA)
80770-0500-05 Asrc Federal Facilities Logistics, Llc (USA)
2-1DFFM1-8CBM60RS80 Desco Corp Marsh Bellofram Div (USA)
100771-08-09 National Micronetics Inc Pacific Div (USA)
2P845FF1-8CBM60 Ametek, Inc. Div Aerospace & Defense (USA)
20-1001H01B-XFF-60 Ashcroft Inc Dba Heise (USA)
W45790 Dresser-Rand Co Ingersoll-Rand Opns a Joint Venture (USA)
P845FF1-8CBM2IN0-60 Ametek, Inc. Div Aerospace & Defense (USA)
309268 Howden Fluid Systems (USA)
10650 Ametek, Inc. Div Aerospace & Defense (USA)
1DFFM Desco Corp Marsh Bellofram Div (USA)
1DFFMS80 Bellofram Corporation (USA)
Related Parts
6695-00-013-4805INTERCHANGEABLE
METER MOVEMENT
10650
6685-00-074-4669INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
164456
6685-00-088-0059INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
164444
6685-00-089-4480INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
2 1-2 1DFFM1-8 02T060
5330-00-164-8809INTERCHANGEABLE
PUMP REPAIR KIT
10650
2920-00-237-0115INTERCHANGEABLE
STATOR,ENGINE GENERATOR
YB79
5310-00-270-2072INTERCHANGEABLE
WASHER,FLAT
10650
6685-00-401-2337INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
3040-00-437-1040INTERCHANGEABLE
CAM,CONTROL
6685-00-489-0727INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
164416
2990-00-489-5958INTERCHANGEABLE
MUFFLER,EXHAUST
T-10650
6685-00-527-7191INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
P845FF-3 1/2-1/4B-0/600

Frequently Asked Questions

What is NSN 6685-00-618-6696?

NSN 6685-00-618-6696 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 6685-00-618-6696?

NSN 6685-00-618-6696 has 19 cross-referenced part numbers: P645FF (Ametek, Inc. Div Aerospace & Defense), 309268 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), P845FF-2 IN.1/8B 0/60 (Ametek, Inc. Div Aerospace & Defense), 100771-08 (National Micronetics Inc Pacific Div), G10940-23KD (Liftec Inc Div Liftec, Inc.) and 14 more.

What NSN replaces 6685-00-618-6696?

There are 12 known substitutes for 6685-00-618-6696: 6695-00-013-4805, 6685-00-074-4669, 6685-00-088-0059 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P645FF?

Key specifications for P645FF: Surface Treatment: PAINT CASE; Color: BLACK CASE; Material: BRONZE ACTUATING ELEMENT; Mounting Hole Diameter: 0.141 INCHES NOMINAL IN. 29 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-618-6696 still in active supply?

NSN 6685-00-618-6696 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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