PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D38999/33W17RCover,electrical Connector

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5935-01-281-0051 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-01-281-0051 — this item is cataloged by the U.S. Government under National Stock Number 5935-01-281-0051. Primary manufacturer part number: D38999/33W17R.
Features
  • Cover,electrical Connector — FSC 5935
  • Seal Type: GASKET
  • Material: RUBBER SILICONE SEAL
  • Nominal Thread Size: 1.188 INCHES IN
  • Thread Direction: RIGHT-HAND
  • Attachment Feature Length: 120.0 MILLIMETERS MINIMUM AND 140.0 MILLIMETERS MAXIMUM MM
  • Thread Class: 2B
  • Size Designation: 17
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
  • Applications requiring Rubber Silicone Seal construction
General Description

The Cover,electrical Connector, cataloged under National Stock Number 5935-01-281-0051, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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: Cancelled.

Technical Specifications
ParameterValue
NSN5935-01-281-0051
Primary Part NumberD38999/33W17R
Item NameCover,electrical Connector
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Seal TypeGASKET
MaterialRUBBER SILICONE SEAL
Nominal Thread Size1.188 INCHES IN
Thread DirectionRIGHT-HAND
Attachment Feature Length120.0 MILLIMETERS MINIMUM AND 140.0 MILLIMETERS MAXIMUM MM
Thread Class2B
Size Designation17
Furnished ItemsWIRE ROPE
Style DesignatorINTERNAL THREAD W/CHAIN OR ROPE
Eye Inside Diameter4.11 MILLIMETERS MINIMUM AND 4.49 MILLIMETERS MAXIMUM MM
Test Data Document81349-DOD-C-38999 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Mounting Facility Type and Quantity1 THREADED COUPLING
Overall Diameter37.0 MILLIMETERS MAXIMUM MM
Body Height23.0 MILLIMETERS MAXIMUM MM
Specification/standard Data81349-DOD-C-38999/33 GOVERNMENT SPECIFICATION
Thread Series DesignatorSPECIAL ACME
Thread Quantity Per Inch10
Surface TreatmentANODIZE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5935-01-210-2730 INTERCHANGEABLE
Cover,electrical Connector
5935-01-279-8630 INTERCHANGEABLE
Cover,electrical Connector
5935-01-280-5470 INTERCHANGEABLE
Cover,electrical Connector
5935-01-280-9797 INTERCHANGEABLE
Cover,electrical Connector
5935-01-281-0050 INTERCHANGEABLE
Cover,electrical Connector
5935-01-281-1617 INTERCHANGEABLE
Cover,electrical Connector
5935-01-282-7231 INTERCHANGEABLE
Cover,electrical Connector
5935-01-282-9854 INTERCHANGEABLE
Cover,electrical Connector
5935-01-286-2856 INTERCHANGEABLE
Cover,electrical Connector
5935-01-287-4416 INTERCHANGEABLE
Cover,electrical Connector
Cross-Reference Index
Part NumberManufacturer
D38999/33W17R Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
D38999/33W17R Leonardo Spa Helicopters Division - Production Site (ITA)
DOD-C-38999/33 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-38999/33 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
10040723 Nimikkeistokeskus Ncb Finland (FIN)
99156559 Thales Sa (FRA)
Related Parts
5935-01-210-2730INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-279-8630INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-280-5470INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-280-9797INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-281-0050INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-281-1617INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-282-7231INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-282-9854INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-286-2856INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-287-4416INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-300-2279INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
5935-01-306-8834INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR

Frequently Asked Questions

What is NSN 5935-01-281-0051?

NSN 5935-01-281-0051 is a Cover,electrical Connector, 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 5935-01-281-0051?

NSN 5935-01-281-0051 has 6 cross-referenced part numbers: D38999/33W17R (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), D38999/33W17R (Leonardo Spa Helicopters Division - Production Site), DOD-C-38999/33 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-38999/33 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 10040723 (Nimikkeistokeskus Ncb Finland) and 1 more.

What NSN replaces 5935-01-281-0051?

There are 12 known substitutes for 5935-01-281-0051: 5935-01-210-2730, 5935-01-279-8630, 5935-01-280-5470 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D38999/33W17R?

Key specifications for D38999/33W17R: Seal Type: GASKET; Material: RUBBER SILICONE SEAL; Nominal Thread Size: 1.188 INCHES IN; Thread Direction: RIGHT-HAND. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5935-01-281-0051 still in active supply?

NSN 5935-01-281-0051 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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