PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P845FF-0/300PSIGage,pressure,dial Indicating

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-904-4845 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-904-4845 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-904-4845. Primary manufacturer part number: P845FF-0/300PSI.
Features
  • Gage,pressure,dial Indicating — FSC 6685
  • Mounting Hole Quantity: 3
  • Surface Treatment: ENAMEL CASE
  • Material: STEEL CASE
  • Material: BRONZE ACTUATING ELEMENT
  • Material: GLASS PROTECTIVE CRYSTAL
  • Mounting Hole Diameter: 0.171 INCHES NOMINAL IN
  • Overall Diameter: 3.500 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-904-4845, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-904-4845
Primary Part NumberP845FF-0/300PSI
Item NameGage,pressure,dial Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusACTIVE
Mounting Hole Quantity3
Surface TreatmentENAMEL CASE
MaterialSTEEL CASE
MaterialBRONZE ACTUATING ELEMENT
MaterialGLASS PROTECTIVE CRYSTAL
Mounting Hole Diameter0.171 INCHES NOMINAL IN
Overall Diameter3.500 INCHES NOMINAL IN
Scale Inscription/background ColorBLACK FIGURES ON WHITE BACKGROUND
Actuation TypeSINGLE BOURDON TUBE
Scale Smallest Increment100.0 POUNDS LBS
Scale TypeSINGLE
Connection TypeEXTERNAL
AdjustabilityNONADJUSTABLE
Connection Quantity1
Mounting MethodFLUSH PANEL
Dial Size2-1/2 IN. DIA IN
Pointer ColorBLACK
Connection Size0.125 IN. NPT DIA IN
Pointer TypeINDICATING
Scale Range+0.0 TO 3000.0 POUNDS PRESSURE PER SQUARE INCH LBS
Scale Accuracy1 PCT ENTIRE RANGE
Connector Type VentNOT PROVIDED
Graduation Unit500.0 POUNDS LBS
Connection LocationBACK
Scale NamePRESSURE
Bolt Circle Diameter3.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
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
6685-00-401-2337 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-557-5878P845FF-2 1/2-1/8B-0/15 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-00-618-6696 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-812-9035 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-878-7161164451 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-01-055-9642138054 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6685-01-143-3599P845FF-164452 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
Cross-Reference Index
Part NumberManufacturer
632-0011 Meggitt Troy Inc (USA)
P845FF Ametek, Inc. Div Aerospace & Defense (USA)
G5484-50B Liftec Inc Div Liftec, Inc. (USA)
P845FF-0/300PSI PRIMARY Ametek, Inc. Div Aerospace & Defense (USA)
Related Parts
6685-00-074-4669INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
164456
6685-00-088-0059INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
164444
6685-00-401-2337INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-557-5878INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
P845FF-2 1/2-1/8B-0/15
6685-00-618-6696INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-812-9035INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-878-7161INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
164451
6685-01-055-9642INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
138054
6685-01-143-3599INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
P845FF-164452

Frequently Asked Questions

What is NSN 6685-00-904-4845?

NSN 6685-00-904-4845 is a Gage,pressure,dial Indicating, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-904-4845?

NSN 6685-00-904-4845 has 4 cross-referenced part numbers: 632-0011 (Meggitt Troy Inc), P845FF (Ametek, Inc. Div Aerospace & Defense), G5484-50B (Liftec Inc Div Liftec, Inc.), P845FF-0/300PSI (Ametek, Inc. Div Aerospace & Defense).

What NSN replaces 6685-00-904-4845?

There are 9 known substitutes for 6685-00-904-4845: 6685-00-074-4669, 6685-00-088-0059, 6685-00-401-2337 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P845FF-0/300PSI?

Key specifications for P845FF-0/300PSI: Mounting Hole Quantity: 3; Surface Treatment: ENAMEL CASE; Material: STEEL CASE; Material: BRONZE ACTUATING ELEMENT. 27 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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