The Connector,plug,electrical, cataloged under National Stock Number 5935-00-549-8489, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Ideal Precision Meter Co Dba Ideal Precision Meter Co. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-00-549-8489 |
| Primary Part Number | 21-20SSK |
| Item Name | Connector,plug,electrical |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Ideal Precision Meter Co Dba Ideal Precision Meter Co |
| Status | ACTIVE |
| Contact Maximum Current Rating in Amps | 5.0 SINGLE MATING END SINGLE CONTACT GROUPING |
| Connector Locking Method | JACKSCREW-SOCKET |
| Body Style | STRAIGHT SHAPE W/SCREW LOCKS |
| Terminal Type | SOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING |
| Contact Material | COPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING |
| Mating End Quantity | 1 |
| Precious Material | GOLD |
| Contact Position Arrangement Style | 21 SINGLE MATING END |
| Precious Material and Weight | 0.021 GOLD GRAINS, TROY |
| Terminal Location | BACK SINGLE MATING END SINGLE CONTACT GROUPING |
| Included Contact Quantity | 21 SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Included Contact Type | ROUND SOCKET SINGLE MATING END SINGLE CONTACT GROUPING |
| Polarization Method | JACKSCREW |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Contact Removability | NONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Class | 2A AND 2B A |
| Contact Surface Treatment | GOLD SINGLE MATING END SINGLE CONTACT GROUPING |
| Threaded Device Type | COUPLING FACILITY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Insert Material | PLASTIC DIALLYL PHTHALATE SINGLE MATING END |
| 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 |
|---|---|
| 21-20SSK | Ideal Precision Meter Co Dba Ideal Precision Meter Co (USA) |
| Reference | Meaning |
|---|---|
| 21-20SGDSKR | 5/2 Secondary reference U.S. Government activity |
| 226711 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5935-00-549-8489 is a Connector,plug,electrical, manufactured by Ideal Precision Meter Co Dba Ideal Precision Meter Co, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-00-549-8489 has 1 manufacturer part number on file: 21-20SSK (Ideal Precision Meter Co Dba Ideal Precision Meter Co).
2 possible matches (shared part number, not a government interchangeability claim): 2835-00-962-0188, 5306-01-550-7032. Verify interchangeability with system specifications before substitution.
Key specifications for 21-20SSK: Overall Height: 1.031 INCHES NOMINAL IN; Contact Maximum Current Rating in Amps: 5.0 SINGLE MATING END SINGLE CONTACT GROUPING; Connector Locking Method: JACKSCREW-SOCKET; Body Style: STRAIGHT SHAPE W/SCREW LOCKS. 22 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.