PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4251Connector,receptacle,electrical

Carlisle & Finch Co · NSN 5935-01-073-1638 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-073-1638 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-073-1638. Primary manufacturer part number: 4251.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Unthreaded Mounting Hole Diameter: 0.156 INCHES NOMINAL IN
  • Included Contact Type: U-PIN SINGLE MATING END FIRST CONTACT GROUPING
  • Contact Maximum DC Voltage Rating in Volts: 125.0 SINGLE MATING END ALL CONTACT GROUPINGS
  • Contact Material: COPPER ALLOY SINGLE MATING END ALL CONTACT GROUPINGS
  • Terminal Type: SCREW SINGLE MATING END ALL CONTACT GROUPINGS
  • Contact Removability: NONREMOVABLE SINGLE MATING END ALL CONTACT GROUPINGS
  • Mating End Quantity: 1
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-073-1638, is classified within Federal Supply Class 5935 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Carlisle & Finch Co. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-01-073-1638
Primary Part Number4251
Item NameConnector,receptacle,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerCarlisle & Finch Co
StatusACTIVE
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL IN
Included Contact TypeU-PIN SINGLE MATING END FIRST CONTACT GROUPING
Contact Maximum DC Voltage Rating in Volts125.0 SINGLE MATING END ALL CONTACT GROUPINGS
Contact MaterialCOPPER ALLOY SINGLE MATING END ALL CONTACT GROUPINGS
Terminal TypeSCREW SINGLE MATING END ALL CONTACT GROUPINGS
Contact RemovabilityNONREMOVABLE SINGLE MATING END ALL CONTACT GROUPINGS
Mating End Quantity1
Bushing Diameter1.718 INCHES NOMINAL IN
Insert MaterialPLASTIC PHENOLIC SINGLE MATING END
Polarization MethodCONTACT
Contact Position Arrangement Style"3,5-15" SINGLE MATING END
Contact Surface TreatmentNICKEL SINGLE MATING END ALL CONTACT GROUPINGS
Contact Maximum AC Voltage Rating in Volts125.0 SINGLE MATING END ALL CONTACT GROUPINGS
Included Contact Quantity2 SINGLE MATING END SECOND CONTACT GROUPING
Shell MaterialPLASTIC
Included Contact Quantity1 SINGLE MATING END FIRST CONTACT GROUPING
Contact Maximum Current Rating in Amps15.0 SINGLE MATING END ALL CONTACT GROUPINGS
Mounting Hole Radius1.083 INCHES NOMINAL IN
Body StyleSTRAIGHT SHAPE W/FLANGE
Distance From Mounting Shoulder to Rear Face1.718 INCHES NOMINAL IN
Overall Diameter2.562 INCHES NOMINAL IN
Terminal LocationSIDE SINGLE MATING END ALL CONTACT GROUPINGS
Included Contact TypeFLAT PIN SINGLE MATING END SECOND CONTACT GROUPING
Shell TypeSOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-010-30464251 INTERCHANGEABLE
Nut,plain,castellated,hexagon
Fwd Seagrave Holdings Lp
5975-00-280-9215LMF90-75 INTERCHANGEABLE
Elbow,electrical Conduit
Egs Electrical Group Appleton Div
2520-00-350-262220-30142 INTERCHANGEABLE
Universal Joint,vehicular
Mayo Company Inc. Dba Dragon Equipment
5330-00-351-6835QD604A INTERCHANGEABLE
Gasket
Wisconsin Motors, Llc
7510-00-473-9855425-1 INTERCHANGEABLE
Tape,pressure Sensitive Adhesive
Tapesouth Inc Dba Tapesouth Inc
6625-00-504-5711425-1 INTERCHANGEABLE
Detecting Element,directional Co
Bird Electronic Corporation Div Bird Electronic Corp
5340-00-514-6269361-107 INTERCHANGEABLE
Mount,resilient,utility
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
7320-00-736-6963 INTERCHANGEABLE
Cabinet,delivery and Storage,pas
5975-00-846-4622 INTERCHANGEABLE
Mounting Base,electrical Equipme
3040-01-035-99644251 INTERCHANGEABLE
Bracket,eye,nonrotating Shaft
Pdi Ground Support Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
4251 PRIMARY Carlisle & Finch Co (USA)
HBL5278C PRIMARY Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division (USA)
16-01310-002 PRIMARY Raytheon Company (USA)
5278-C Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division (USA)
1001833 Tld Ace Corp Div Tld Ace (USA)
Related Parts
5310-00-010-3046INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
4251
5975-00-280-9215INTERCHANGEABLE
ELBOW,ELECTRICAL CONDUIT
LMF90-75
2520-00-350-2622INTERCHANGEABLE
UNIVERSAL JOINT,VEHICULAR
20-30142
5330-00-351-6835INTERCHANGEABLE
GASKET
QD604A
7510-00-473-9855INTERCHANGEABLE
TAPE,PRESSURE SENSITIVE ADHESIVE
425-1
6625-00-504-5711INTERCHANGEABLE
DETECTING ELEMENT,DIRECTIONAL CO
425-1
5340-00-514-6269INTERCHANGEABLE
MOUNT,RESILIENT,UTILITY
361-107
7320-00-736-6963INTERCHANGEABLE
CABINET,DELIVERY AND STORAGE,PAS
5975-00-846-4622INTERCHANGEABLE
MOUNTING BASE,ELECTRICAL EQUIPME
3040-01-035-9964INTERCHANGEABLE
BRACKET,EYE,NONROTATING SHAFT
4251
5975-01-067-9134INTERCHANGEABLE
CABINET,ELECTRICAL EQUIPMENT
4251
4730-01-097-5971INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
4251

Frequently Asked Questions

What is NSN 5935-01-073-1638?

NSN 5935-01-073-1638 is a Connector,receptacle,electrical, manufactured by Carlisle & Finch Co, classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-01-073-1638?

NSN 5935-01-073-1638 has 5 cross-referenced part numbers: 4251 (Carlisle & Finch Co), HBL5278C (Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division), 16-01310-002 (Raytheon Company), 5278-C (Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division), 1001833 (Tld Ace Corp Div Tld Ace).

What NSN replaces 5935-01-073-1638?

There are 12 known substitutes for 5935-01-073-1638: 5310-00-010-3046, 5975-00-280-9215, 2520-00-350-2622 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4251?

Key specifications for 4251: Unthreaded Mounting Hole Diameter: 0.156 INCHES NOMINAL IN; Included Contact Type: U-PIN SINGLE MATING END FIRST CONTACT GROUPING; Contact Maximum DC Voltage Rating in Volts: 125.0 SINGLE MATING END ALL CONTACT GROUPINGS; Contact Material: COPPER ALLOY SINGLE MATING END ALL CONTACT GROUPINGS. 24 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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