The Contact Assembly,electrical, cataloged under National Stock Number 5999-01-331-4121, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Circuit Assembly Corp. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-331-4121 |
| Primary Part Number | CA-S04-23B-43 |
| Item Name | Contact Assembly,electrical |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Circuit Assembly Corp |
| Status | ACTIVE |
| Terminal Quantity | 4 |
| Terminal Type | PIN |
| Structural Design | NONSWITCHING |
| Precious Material | GOLD |
| Contact Quantity | 4 |
| Mounting Configuration | FOUR CONTACTS MTD ON A PLASTIC CARRIER STRIP SPACED 0.100 IN. C TO C IN |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | Y |
| Weight | 0.0100 lbs |
| Cube | 0.0010 cu ft |
| Part Number | Manufacturer |
|---|---|
| CA-S04-23B-43 PRIMARY | Circuit Assembly Corp (USA) |
| Reference | Meaning |
|---|---|
| CA-S04SP100-230-430 | 5/9 Secondary reference Circuit Assembly Corp |
NSN 5999-01-331-4121 is a Contact Assembly,electrical, manufactured by Circuit Assembly Corp, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-331-4121 has 1 manufacturer part number on file: CA-S04-23B-43 (Circuit Assembly Corp).
Key specifications for CA-S04-23B-43: Overall Height: 0.330 INCHES NOMINAL IN; Terminal Quantity: 4; Terminal Type: PIN; Structural Design: NONSWITCHING. 7 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.