PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31855-12Gage,pressure,dial Indicating

Ranco Inc Ranco Controls Div · NSN 6620-00-051-7143 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-00-051-7143 — this item is cataloged by the U.S. Government under National Stock Number 6620-00-051-7143. Primary manufacturer part number: 31855-12.
Features
  • Gage,pressure,dial Indicating — FSC 6620
  • Mounting Method: FLUSH PANEL
  • Mounting Hole Quantity: 4
  • Connection Location: BACK
  • Connector Type Vent: NOT PROVIDED
  • Color: BLACK CASE
  • Material: PLASTIC CASE
  • Mounting Hole Diameter: 0.196 INCHES NOMINAL IN
Applications
  • Applications requiring Plastic Case construction
General Description

The Gage,pressure,dial Indicating, cataloged under National Stock Number 6620-00-051-7143, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ranco Inc Ranco Controls Div. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 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
NSN6620-00-051-7143
Primary Part Number31855-12
Item NameGage,pressure,dial Indicating
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerRanco Inc Ranco Controls Div
StatusCANCELLED
Mounting MethodFLUSH PANEL
Mounting Hole Quantity4
Connection LocationBACK
Connector Type VentNOT PROVIDED
ColorBLACK CASE
MaterialPLASTIC CASE
Mounting Hole Diameter0.196 INCHES NOMINAL IN
MaterialCOPPER ALLOY ACTUATING ELEMENT
Overall Diameter3.130 INCHES NOMINAL IN
MaterialGLASS PROTECTIVE CRYSTAL
Bolt Circle Diameter3.505 INCHES NOMINAL IN
Actuation TypeDIAPHRAGM
Connection Quantity2
Scale Inscription/background ColorLUMINOUS FIGURES IN BLACK BACKGROUND
Pointer Marking1; 2
Scale Range+0.000 TO 25.000 POUNDS PRESSURE PER SQUARE INCH LBS
Unable to DecodeUNABLE TO DECODE
Dial Size2-3/4 IN. DIA IN
Connection Size1/4 IN. NPT IN
Graduation Unit10.000 POUNDS LBS
Surface TreatmentPAINT EPOXY CASE
Scale Smallest Increment1.000 POUNDS LBS
Scale TypeSINGLE
Pointer TypeINDICATING
AdjustabilityADJUSTABLE
Scale NamePRESSURE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6620-00-045-8134 INTERCHANGEABLE
Gage,pressure,dial Indicating
6620-00-051-7145 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-515-5764 INTERCHANGEABLE
Gage,vacuum,indicating
6685-00-551-3603 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-553-1995 INTERCHANGEABLE
Gage,pressure,dial Indicating
5220-00-555-2936318551-2 INTERCHANGEABLE
Gage Assembly
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
6685-00-555-3054 INTERCHANGEABLE
Gage,pressure,dial Indicating
6685-00-556-8527 INTERCHANGEABLE
Gage,vacuum,indicating
6685-00-557-0220 INTERCHANGEABLE
Gage,pressure,dial Indicating
6620-00-557-0403 INTERCHANGEABLE
Gage,pressure,dial Indicating
Cross-Reference Index
Part NumberManufacturer
31855-12 PRIMARY Ranco Inc Ranco Controls Div (USA)
MILG7734 Department of the Air Force (USA)
31855-12 Ranco Management Corp (USA)
31855-12A PRIMARY Ranco Inc Ranco Controls Div (USA)
31855-12A Ranco Management Corp (USA)
MS28064-3 Department of the Air Force (USA)
MS28064T3 Department of the Air Force (USA)
Related Parts
6620-00-045-8134INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6620-00-051-7145INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-515-5764INTERCHANGEABLE
GAGE,VACUUM,INDICATING
6685-00-551-3603INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-553-1995INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
5220-00-555-2936INTERCHANGEABLE
GAGE ASSEMBLY
318551-2
6685-00-555-3054INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-556-8527INTERCHANGEABLE
GAGE,VACUUM,INDICATING
6685-00-557-0220INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6620-00-557-0403INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-580-0935INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
6685-00-580-0937INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING

Frequently Asked Questions

What is NSN 6620-00-051-7143?

NSN 6620-00-051-7143 is a Gage,pressure,dial Indicating, manufactured by Ranco Inc Ranco Controls Div, classified under FSC 6620 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6620-00-051-7143?

NSN 6620-00-051-7143 has 7 cross-referenced part numbers: 31855-12 (Ranco Inc Ranco Controls Div), MILG7734 (Department of the Air Force), 31855-12 (Ranco Management Corp), 31855-12A (Ranco Inc Ranco Controls Div), 31855-12A (Ranco Management Corp) and 2 more.

What NSN replaces 6620-00-051-7143?

There are 12 known substitutes for 6620-00-051-7143: 6620-00-045-8134, 6620-00-051-7145, 6685-00-515-5764 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31855-12?

Key specifications for 31855-12: Mounting Method: FLUSH PANEL; Overall Depth: 3.000 INCHES NOMINAL IN; Mounting Hole Quantity: 4; Connection Location: BACK. 27 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6620-00-051-7143 still in active supply?

NSN 6620-00-051-7143 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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