PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4291Adapter,connector

U S Dept of Transportation Federal Aviation Administration · NSN 5935-01-049-4991 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-049-4991 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-049-4991. Primary manufacturer part number: 4291.
Features
  • Adapter,connector — FSC 5935
  • Thread Direction: RIGHT-HAND
  • Shell Surface Treatment: GOLD
  • Thread Class: 2B
  • Overall Diameter: 0.590 INCHES NOMINAL IN
  • Threaded Device Type: COUPLING FACILITY
  • Mating End Quantity: 2
  • Shell Material: COPPER ALLOY
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Adapter,connector, cataloged under National Stock Number 5935-01-049-4991, 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 U S Dept of Transportation Federal Aviation Administration. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 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
NSN5935-01-049-4991
Primary Part Number4291
Item NameAdapter,connector
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerU S Dept of Transportation Federal Aviation Administration
StatusCANCELLED
Thread DirectionRIGHT-HAND
Shell Surface TreatmentGOLD
Thread Class2B
Overall Diameter0.590 INCHES NOMINAL IN
Threaded Device TypeCOUPLING FACILITY
Mating End Quantity2
Shell MaterialCOPPER ALLOY
Contact MaterialCOPPER ALLOY SECOND MATING END ALL CONTACT GROUPINGS
Included Contact Quantity1 FIRST MATING END ALL CONTACT GROUPINGS
Environmental ProtectionSHOCK PROOF AND VIBRATION RESISTANT
Connector Locking MethodBAYONET PIN AND INTERNALLY THREADED COUPLING RING
Thread Quantity Per Inch36
Thread Series DesignatorUNS
Included Contact Quantity1 SECOND MATING END ALL CONTACT GROUPINGS
Precious MaterialGOLD
Shell Material Document and ClassificationQQ-C-530,1/2 H FED SPEC SINGLE MATERIAL RESPONSE
Precious Material and Weight0.110 GOLD GRAINS, TROY
Contact MaterialCOPPER ALLOY 360 FIRST MATING END ALL CONTACT GROUPINGS
Nominal Thread Size0.250 INCHES IN
Contact Surface TreatmentGOLD ALL MATING ENDS ALL CONTACT GROUPINGS
Contact Position Arrangement StyleBNC FIRST MATING END
Contact Position Arrangement StyleSMA SECOND MATING END
Contact Material Document and ClassificationQQ-B-626,1/2 H FED SPEC SINGLE MATERIAL RESPONSE FIRST MATING END ALL CONTACT GROUPINGS
Insert MaterialPLASTIC TETRAFLUOROETHYLENE ALL MATING ENDS
Contact RemovabilityNONREMOVABLE ALL MATING ENDS ALL CONTACT GROUPINGS
Precious Material and LocationCONTACT AND BODY SURFACES GOLD
Shell TypeSOLID
Radio Frequency Type Contact Characteristic Impedance in Ohms50.0 ALL MATING ENDS ALL CONTACT GROUPINGS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5331-00-128-20742-239N674-70 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5975-00-160-92224291 INTERCHANGEABLE
Elbow,electrical Conduit
Abb Installation Products Inc
6105-00-284-1425 INTERCHANGEABLE
Motor,alternating Current
5315-00-805-16764291 INTERCHANGEABLE
Staple
Duo-Fast Corp
5930-00-933-374211640681 INTERCHANGEABLE
Switch,push
U S Army Tank Automotive Command Amsta-Im-Mm
2040-00-972-5367429-1 INTERCHANGEABLE
Cap and Adapter Assembly
Parker Hannifin Corp Dba Pneutronics
4940-01-033-6612 INTERCHANGEABLE
Holder,flexible
5935-01-193-5557 INTERCHANGEABLE
Adapter,connector
2940-01-289-554242917 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
3110-01-499-41294291-10B-16 INTERCHANGEABLE
Ball Set,bearing
Winsted Precision Ball Corp
Cross-Reference Index
Part NumberManufacturer
KX2530 Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector (USA)
4291 PRIMARY U S Dept of Transportation Federal Aviation Administration (USA)
2604740-1 Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA)
KG-2530 Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector (USA)
4291 Fluke Electronics Corp Pomona Electronics Div (USA)
BF-SF Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc (USA)
RJ-5077 Arjay Electronics Corp (USA)
Related Parts
5331-00-128-2074INTERCHANGEABLE
O-RING
2-239N674-70
5975-00-160-9222INTERCHANGEABLE
ELBOW,ELECTRICAL CONDUIT
4291
6105-00-284-1425INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5315-00-805-1676INTERCHANGEABLE
STAPLE
4291
5930-00-933-3742INTERCHANGEABLE
SWITCH,PUSH
11640681
2040-00-972-5367INTERCHANGEABLE
CAP AND ADAPTER ASSEMBLY
429-1
4940-01-033-6612INTERCHANGEABLE
HOLDER,FLEXIBLE
5935-01-193-5557INTERCHANGEABLE
ADAPTER,CONNECTOR
2940-01-289-5542INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42917
3110-01-499-4129INTERCHANGEABLE
BALL SET,BEARING
4291-10B-16
8010-01-572-2949INTERCHANGEABLE
PAINT,PLASTIC
4291
5985-01-669-7585INTERCHANGEABLE
LINE,RADIO FREQUENCY TRANSMISSIO
4291

Frequently Asked Questions

What is NSN 5935-01-049-4991?

NSN 5935-01-049-4991 is a Adapter,connector, manufactured by U S Dept of Transportation Federal Aviation Administration, classified under FSC 5935 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5935-01-049-4991?

NSN 5935-01-049-4991 has 7 cross-referenced part numbers: KX2530 (Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector), 4291 (U S Dept of Transportation Federal Aviation Administration), 2604740-1 (Alliant Techsystems Operations Llc Div Defense Electronic Systems), KG-2530 (Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector), 4291 (Fluke Electronics Corp Pomona Electronics Div) and 2 more.

What NSN replaces 5935-01-049-4991?

There are 12 known substitutes for 5935-01-049-4991: 5331-00-128-2074, 5975-00-160-9222, 6105-00-284-1425 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4291?

Key specifications for 4291: Thread Direction: RIGHT-HAND; Shell Surface Treatment: GOLD; Thread Class: 2B; Overall Diameter: 0.590 INCHES NOMINAL IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5935-01-049-4991 still in active supply?

NSN 5935-01-049-4991 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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