PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PB4Transformer,power

Yale Industrial Products, Inc. Div Duff Norton Company · NSN 5950-00-116-8638 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-116-8638 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-116-8638. Primary manufacturer part number: PB4.
Features
  • Transformer,power — FSC 5950
  • Body Length: 1.984 INCHES NOMINAL IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Body Height: 1.891 INCHES NOMINAL IN
  • Terminal Type and Quantity: 4 WIRE LEAD
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Mounting Hole Diameter: 0.312 INCHES NOMINAL SINGLE GROUP IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-116-8638, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Yale Industrial Products, Inc. Div Duff Norton Company. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-116-8638
Primary Part NumberPB4
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerYale Industrial Products, Inc. Div Duff Norton Company
StatusACTIVE
Body Length1.984 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Height1.891 INCHES NOMINAL IN
Terminal Type and Quantity4 WIRE LEAD
Center to Center Distance Between Mounting Facilities Parallel to Length2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Hole Diameter0.312 INCHES NOMINAL SINGLE GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.938 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeFULLY INCLOSED
Winding Operating Current4.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Winding Operating Current7.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Winding Operating Voltage59.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Winding Operating Voltage81.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Frequency Rating50.0 HERTZ NOMINAL SINGLE COMPONENT
Maximum Transformer Power Rating3.0 DECIBELS SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Body Width1.766 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5975-00-816-9617991 INTERCHANGEABLE
Bushing,electrical Conduit
M&w Electric Manufacturing Co. Llc
7520-01-054-4329 INTERCHANGEABLE
Pen,recording
7520-01-060-58207520-01-060-5820 INTERCHANGEABLE
Pen,ball-Point
National Industries for the Blind
4720-01-398-6831PB-4 INTERCHANGEABLE
Hose,nonmetallic
Swagelok Co
5998-01-433-9023PB4 INTERCHANGEABLE
Circuit Card Assembly
Raven Engineering, Inc.
6530-01-600-4426PB4 INTERCHANGEABLE
Bag,sterilization
Healthmark Industries Co., Inc.
Cross-Reference Index
Part NumberManufacturer
PB4 PRIMARY Yale Industrial Products, Inc. Div Duff Norton Company (USA)
Related Parts
5975-00-816-9617INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
991
7520-01-054-4329INTERCHANGEABLE
PEN,RECORDING
7520-01-060-5820INTERCHANGEABLE
PEN,BALL-POINT
7520-01-060-5820
4720-01-398-6831INTERCHANGEABLE
HOSE,NONMETALLIC
PB-4
5998-01-433-9023INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
PB4
6530-01-600-4426INTERCHANGEABLE
BAG,STERILIZATION
PB4

Frequently Asked Questions

What is NSN 5950-00-116-8638?

NSN 5950-00-116-8638 is a Transformer,power, manufactured by Yale Industrial Products, Inc. Div Duff Norton Company, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-116-8638?

NSN 5950-00-116-8638 has 1 cross-referenced part number: PB4 (Yale Industrial Products, Inc. Div Duff Norton Company).

What NSN replaces 5950-00-116-8638?

There are 6 known substitutes for 5950-00-116-8638: 5975-00-816-9617, 7520-01-054-4329, 7520-01-060-5820 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of PB4?

Key specifications for PB4: Body Length: 1.984 INCHES NOMINAL IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Body Height: 1.891 INCHES NOMINAL IN; Terminal Type and Quantity: 4 WIRE LEAD. 19 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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