The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-656-6068, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Te-Co. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-01-656-6068 |
| Primary Part Number | MS3412D28-21EW |
| Item Name | Connector,receptacle,electrical |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Te-Co |
| Status | ACTIVE |
| Body Style | STRAIGHT SHAPE, EXTERNAL COUPLING |
| Terminal Type | PIN SINGLE MATING END ALL CONTACT GROUPINGS |
| Contact Material | COPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING |
| Mating End Quantity | 1 |
| Contact Position Arrangement Style | 28-21 SINGLE MATING END |
| Insert Position in Deg | 70.0 |
| Unthreaded Mounting Hole Diameter | 0.142 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| Precious Material and Weight | 0.037 GOLD GRAINS, TROY |
| Terminal Location | BACK SINGLE MATING END SINGLE CONTACT GROUPING |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 1.562 INCHES NOMINAL IN |
| Included Contact Quantity | 37 SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Direction | RIGHT-HAND |
| Mounting Facility Thickness | 0.125 INCHES NOMINAL IN |
| Nominal Thread Size | 1.750 INCHES IN |
| Included Contact Type | ROUND SOCKET SINGLE MATING END SINGLE CONTACT GROUPING |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 1.562 INCHES NOMINAL IN |
| Polarization Method | KEYWAY OR MULTIPLE KEYWAY |
| Environmental Protection | MOISTURE PROOF AND SALT WATER RESISTANT AND VIBRATION PROOF AND SHOCK RESISTANT AND COLD RESISTANT AND HEAT RESISTANT AND EXPLOSION PROOF |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Distance From Mounting Shoulder to Front Face | 0.781 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Contact Removability | REMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Class | 2A A |
| Test Data Document | 81349-MIL-C-5015 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.). |
| Thread Quantity Per Inch | 18 |
| Contact Surface Treatment | GOLD SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Series Designator | UNS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MS3412D28-21EW PRIMARY | Te-Co (USA) |
| MS3412D28-21EW PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS34121 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS50151 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS3412D28-21EW | 5/9 Secondary reference U.S. Government activity |
| SAE-AS34121 | 5/9 Secondary reference Sae International Dba Sae International |
NSN 5935-01-656-6068 is a Connector,receptacle,electrical, manufactured by Te-Co, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-01-656-6068 has 2 manufacturer part numbers on file: MS3412D28-21EW (Te-Co), MS3412D28-21EW (Sae International Dba Sae International).
Key specifications for MS3412D28-21EW: Overall Height: 2.000 INCHES NOMINAL IN; Body Style: STRAIGHT SHAPE, EXTERNAL COUPLING; Terminal Type: PIN SINGLE MATING END ALL CONTACT GROUPINGS; Contact Material: COPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING. 26 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.