PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10638AGage Unit,engine

Prestolite Electric Inc · NSN 6620-00-993-9564 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-00-993-9564 — this item is cataloged by the U.S. Government under National Stock Number 6620-00-993-9564. Primary manufacturer part number: 10638A.
Features
  • Gage Unit,engine — FSC 6620
  • Scale Marking: LETTERS AND NUMERALS AND LINED INCREMENTS
  • Scale Quantity: 3
  • Scale Marking Transparency: FLUORESCENT
  • Voltage in Volts: 12.0 OR 24.0
  • Electrical Connection Identifying Number: PART NO. AND1006; PART NO. AND10066-14S-2P
  • Scale Smallest Increment Graduation: 10 DEG; 10 PSI; I PSI
  • Mechanical Connection Quantity: 3
Applications
  • Mechanical power generation
  • Drive system operation
  • Auxiliary equipment operation
General Description

The Gage Unit,engine, cataloged under National Stock Number 6620-00-993-9564, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Prestolite Electric Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6620-00-993-9564
Primary Part Number10638A
Item NameGage Unit,engine
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerPrestolite Electric Inc
StatusCANCELLED
Scale MarkingLETTERS AND NUMERALS AND LINED INCREMENTS
Scale Quantity3
Scale Marking TransparencyFLUORESCENT
Voltage in Volts12.0 OR 24.0
Electrical Connection Identifying NumberPART NO. AND1006; PART NO. AND10066-14S-2P
Scale Smallest Increment Graduation10 DEG; 10 PSI; I PSI
Mechanical Connection Quantity3
Temp Indicator DeviceELECTRICAL
Contact TypePIN
Mechanical Connection Size7/16 IN.-20 UNF-3B IN
Contact Quantity4
Mounting MethodPANEL
Current TypeDC
Connector Controlling AgencyAND
Scale NameOIL TEMPERATURE AND OIL PRESSURE AND FUEL PRESSURE
Electrical Connection Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
6620-00-531-2974 INTERCHANGEABLE
Gage Unit,engine
5950-01-028-786410638A INTERCHANGEABLE
Demagnetizer
Keysight Technologies Inc
Cross-Reference Index
Part NumberManufacturer
10638A Prestolite Electric Inc (USA)
MS28043T2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6620-00-531-2974INTERCHANGEABLE
GAGE UNIT,ENGINE
5950-01-028-7864INTERCHANGEABLE
DEMAGNETIZER
10638A

Frequently Asked Questions

What is NSN 6620-00-993-9564?

NSN 6620-00-993-9564 is a Gage Unit,engine, manufactured by Prestolite Electric Inc, classified under FSC 6620 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6620-00-993-9564?

NSN 6620-00-993-9564 has 2 cross-referenced part numbers: 10638A (Prestolite Electric Inc), MS28043T2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6620-00-993-9564?

There are 2 known substitutes for 6620-00-993-9564: 6620-00-531-2974, 5950-01-028-7864. Verify interchangeability with system specifications before substitution.

What are the specifications of 10638A?

Key specifications for 10638A: Scale Marking: LETTERS AND NUMERALS AND LINED INCREMENTS; Scale Quantity: 3; Overall Height: 3.250 INCHES NOMINAL IN; Scale Marking Transparency: FLUORESCENT. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6620-00-993-9564 still in active supply?

NSN 6620-00-993-9564 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.
PartsTable Design LLC · partstable.com