The Cap,electrical, cataloged under National Stock Number 5999-00-577-9566, 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 Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-00-577-9566 |
| Primary Part Number | SM-B-143123 |
| Item Name | Cap,electrical |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc |
| Status | ACTIVE |
| FSC Application Data | TRANSMITTER,TELEPHONE |
| Length | 0.875 INCHES NOMINAL IN |
| Chain | NOT INCLUDED |
| Mounting Method | THREAD |
| Diameter | 2.395 INCHES NOMINAL IN |
| Insert | NOT INCLUDED |
| Thread Size | 2-11/64-24 |
| Material | PLASTIC BODY |
| Usage Design | CAP FOR TRANSMITTER |
| 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 | JZ |
| Weight | 0.0500 lbs |
| Cube | 0.0166 cu ft |
| Part Number | Manufacturer |
|---|---|
| SM-B-143123 | Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc (USA) |
| 143123 | Tacticom Inc (USA) |
| 143123 | Dynalec Corporation (USA) |
| Reference | Meaning |
|---|---|
| SMB143123 | 3/2 Design control — primary reference U.S. Government activity |
| B10286 | 5/1 Secondary reference Telephone Company of America Incorporated |
NSN 5999-00-577-9566 is a Cap,electrical, manufactured by Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-00-577-9566 has 3 manufacturer part numbers on file: SM-B-143123 (Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc), 143123 (Tacticom Inc), 143123 (Dynalec Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5365-00-596-5610. Verify interchangeability with system specifications before substitution.
Key specifications for SM-B-143123: FSC Application Data: TRANSMITTER,TELEPHONE; Length: 0.875 INCHES NOMINAL IN; Chain: NOT INCLUDED; Mounting Method: THREAD. 9 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.