The Bushing,electrical Conductor, cataloged under National Stock Number 5975-00-059-3646, is classified within Federal Supply Class 5975 (Electrical Hardware and Supplies) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Astrocom Electronics Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5975-00-059-3646 |
| Primary Part Number | 21918 |
| Item Name | Bushing,electrical Conductor |
| FSC / FSG | 5975 / 59 — Electrical Hardware and Supplies |
| Manufacturer | Astrocom Electronics Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE BODY |
| Accommodation Hole Inside Diameter | 0.352 INCHES NOMINAL0.352 INCHES NOMINAL IN |
| Body Outside Diameter | 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN |
| Base Thread Location | EXTERNALEXTERNAL |
| Thread Length | 0.156 INCHES NOMINAL0.156 INCHES NOMINAL IN |
| Style Designator | THREADED |
| Material Document and Classification | QQ-B-626,COMP 22,1/2 H FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Nominal Thread Size | 0.500 INCHES0.500 INCHES IN |
| Surface Treatment | OXIDE BODY |
| Thread Class | 2A2A |
| Material | COPPER ALLOY BODY |
| 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 |
|---|---|
| 21918 PRIMARY | Astrocom Electronics Inc (USA) |
| Reference | Meaning |
|---|---|
| 730-1404-5 | 5/2 Secondary reference U.S. Government activity |
NSN 5975-00-059-3646 is a Bushing,electrical Conductor, manufactured by Astrocom Electronics Inc, classified under FSC 5975, Electrical Hardware and Supplies. Status: active.
NSN 5975-00-059-3646 has 1 manufacturer part number on file: 21918 (Astrocom Electronics Inc).
2 possible matches (shared part number, not a government interchangeability claim): 3120-00-083-8917, 4720-00-729-6407. Verify interchangeability with system specifications before substitution.
Key specifications for 21918: Overall Height: 0.386 INCHES NOMINAL0.386 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE BODY; Accommodation Hole Inside Diameter: 0.352 INCHES NOMINAL0.352 INCHES NOMINAL IN; Body Outside Diameter: 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN. 11 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.