PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILC38999Connector,receptacle,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5935-01-045-2999 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-045-2999 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-045-2999. Primary manufacturer part number: MILC38999.
Features
  • Connector,receptacle,electrical — FSC 5935
  • Thread Direction: RIGHT-HAND
  • Center to Center Distance Between Mounting Facilities Parallel to Height: 1.250 INCHES NOMINAL IN
  • Distance From Mounting Shoulder to Front Face: 0.785 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
  • Unthreaded Mounting Hole Diameter: 0.123 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
  • Body Style: STRAIGHT SHAPE, EXTERNAL COUPLING
  • Contact Surface Treatment: GOLD AND SILVER SINGLE MATING END SINGLE CONTACT GROUPING
  • Contact Material: COPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
General Description

The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-045-2999, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5935-01-045-2999
Primary Part NumberMILC38999
Item NameConnector,receptacle,electrical
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Thread DirectionRIGHT-HAND
Center to Center Distance Between Mounting Facilities Parallel to Height1.250 INCHES NOMINAL IN
Distance From Mounting Shoulder to Front Face0.785 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
Unthreaded Mounting Hole Diameter0.123 INCHES MINIMUM AND 0.138 INCHES MAXIMUM IN
Body StyleSTRAIGHT SHAPE, EXTERNAL COUPLING
Contact Surface TreatmentGOLD AND SILVER SINGLE MATING END SINGLE CONTACT GROUPING
Contact MaterialCOPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
Thread Class2A A
Distance Between Centerlines of Mounting Facilities Parallel to Body Width1.250 INCHES NOMINAL IN
Mating End Quantity1
Polarization MethodKEYWAY OR MULTIPLE KEYWAY
Environmental ProtectionMOISTURE RESISTANT AND SALT WATER RESISTANT AND VIBRATION RESISTANT
Contact RemovabilityREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING
Included Contact Quantity16 SINGLE MATING END SINGLE CONTACT GROUPING
Terminal LocationBACK SINGLE MATING END SINGLE CONTACT GROUPING
Contact Position Arrangement Style21-16 SINGLE MATING END
Specification/standard Data81349-MIL-C-38999 GOVERNMENT SPECIFICATION
Thread Series DesignatorUNEF
Precious MaterialGOLD AND SILVER
Precious Material and LocationCONTACT SURFACES GOLD AND CONTACT SURFACES SILVER
Precious Material and Weight0.016 GOLD GRAINS, TROY AND 0.016 SILVER GRAINS, TROY
Shell MaterialALUMINUM ALLOY
Nominal Thread Length0.219 INCHES IN
Shell TypeSOLID
Shell Surface TreatmentCADMIUM AND CHROMATE
Nominal Thread Size1.188 INCHES IN
Insert Position in Deg0.0
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
3110-01-033-8187 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
MILC38999 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS27656E21B16S Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
10131512 Nimikkeistokeskus Ncb Finland (FIN)
MS27656T21F16S Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-38999 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS27656T21B16S Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3110-01-033-8187INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 5935-01-045-2999?

NSN 5935-01-045-2999 is a Connector,receptacle,electrical, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5935 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5935-01-045-2999?

NSN 5935-01-045-2999 has 6 cross-referenced part numbers: MILC38999 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS27656E21B16S (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 10131512 (Nimikkeistokeskus Ncb Finland), MS27656T21F16S (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-38999 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 5935-01-045-2999?

There is 1 known substitute for 5935-01-045-2999: 3110-01-033-8187. Verify interchangeability with system specifications before substitution.

What are the specifications of MILC38999?

Key specifications for MILC38999: Overall Width: 1.562 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Center to Center Distance Between Mounting Facilities Parallel to Height: 1.250 INCHES NOMINAL IN; Distance From Mounting Shoulder to Front Face: 0.785 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5935-01-045-2999 still in active supply?

NSN 5935-01-045-2999 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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