The Contact,electrical, cataloged under National Stock Number 5999-01-103-4540, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Crown Controls Corp. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-103-4540 |
| Primary Part Number | 71990 |
| Item Name | Contact,electrical |
| FSC / FSG | 5999 / 59 — No Item Name Available |
| Manufacturer | Crown Controls Corp |
| Status | ACTIVE |
| Thread Class | 2A A |
| Style Designator | CYLINDRICAL SHAPE |
| Surface Treatment | SILVER BODY AND CONTACT |
| Precious Material and Location | BODY AND CONTACT SURFACES SILVER |
| Precious Material | SILVER |
| Precious Material and Weight | 0.005 SILVER GRAINS, TROY |
| Thread Direction | RIGHT-HAND |
| Terminal Type and Quantity | 1 THREADED STUD MOUNTING END |
| Material | COPPER ALLOY BODY AND CONTACT |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Mounting Method | THREADED STUD(S) |
| Mounting Facility Quantity | 1 |
| Nominal Thread Size | 0.188 INCHES IN |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Style Designator | CYLINDRICAL SHAPE |
| Surface Treatment | SILVER BODY AND CONTACT |
| Precious Material and Location | BODY AND CONTACT SURFACES SILVER |
| Precious Material | SILVER |
| Precious Material and Weight | 0.005 SILVER GRAINS, TROY |
| Thread Direction | RIGHT-HAND |
| Terminal Type and Quantity | 1 THREADED STUD MOUNTING END |
| Material | COPPER ALLOY BODY AND CONTACT |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Mounting Method | THREADED STUD(S) |
| Mounting Facility Quantity | 1 |
| Nominal Thread Size | 0.188 INCHES IN |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Unit of Issue | EA |
| SMR Code | J |
| Weight | 0.0300 lbs |
| Cube | 0.0010 cu ft |
| Part Number | Manufacturer |
|---|---|
| 71990 PRIMARY | Crown Controls Corp (USA) |
NSN 5999-01-103-4540 is a Contact,electrical, manufactured by Crown Controls Corp, classified under FSC 5999 (No Item Name Available). Status: active.
NSN 5999-01-103-4540 has 1 cross-referenced part number: 71990 (Crown Controls Corp).
There are 2 known substitutes for 5999-01-103-4540: 5950-01-069-7121, 5120-01-715-9999. Verify interchangeability with system specifications before substitution.
Key specifications for 71990: Thread Class: 2A A; Style Designator: CYLINDRICAL SHAPE; Surface Treatment: SILVER BODY AND CONTACT; Precious Material and Location: BODY AND CONTACT SURFACES SILVER. 30 total characteristics are documented in the Federal Logistics Information System.