The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-656-6071, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-01-656-6071 |
| Primary Part Number | MS3412D28-21EY |
| Item Name | Connector,receptacle,electrical |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Sae International Dba Sae International |
| 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 | 215.0 |
| 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 |
|---|---|
| MS3412D28-21EY PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS50151 | 3/1 Design control — primary reference Sae International Dba Sae International |
| SAE-AS34121 | 5/9 Secondary reference U.S. Government activity |
| MS3412D28-21EY | 5/9 Secondary reference Te-Co |
| MS3412D28-21EY | 5/9 Secondary reference U.S. Government activity |
| AS50151 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS34121 | 5/9 Secondary reference Sae International Dba Sae International |
| MS3412D28-21EY | 5/9 Secondary reference U.S. Government activity |
| AS50151 | 5/9 Secondary reference Sae International Dba Sae International |
NSN 5935-01-656-6071 is a Connector,receptacle,electrical, manufactured by Sae International Dba Sae International, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-01-656-6071 has 1 manufacturer part number on file: MS3412D28-21EY (Sae International Dba Sae International).
Key specifications for MS3412D28-21EY: 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.