The Adapter,electrical Conduit, cataloged under National Stock Number 5975-01-664-6108, is classified within Federal Supply Class 5975 (Electrical Hardware and Supplies) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Kato Engineering Inc.. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5975-01-664-6108 |
| Primary Part Number | 558-11571-58 |
| Item Name | Adapter,electrical Conduit |
| FSC / FSG | 5975 / 59 — Electrical Hardware and Supplies |
| Manufacturer | Kato Engineering Inc. |
| Status | ACTIVE |
| Style Designator | THREAD TO THREAD ENLARGER |
| Outside Diameter | 0.840 INCHES NOMINAL SECOND END IN |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Inside Diameter | 0.875 INCHES MAXIMUM FIRST END IN |
| Surface Treatment | CADMIUM AND NICKEL |
| Conduit Type Accommodated | ANY ACCEPTABLE SECOND END |
| Thread Class | 2A SECOND END A |
| Thread Class | 2B FIRST END |
| Material | ALUMINUM |
| Thread Series Designator | UNEF FIRST END |
| Thread Series Designator | NPT SECOND END |
| Thread Quantity | 20 PER INCH FIRST END |
| Thread Quantity | 14 PER INCH SECOND END |
| End Type | EXTERNAL THREAD SECOND END |
| End Type | INTERNAL THREAD FIRST 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 |
|---|---|
| 558-11571-58 PRIMARY | Kato Engineering Inc. (USA) |
| Reference | Meaning |
|---|---|
| 300AS001N1404-4 | 5/9 Secondary reference Glenair, Inc. |
NSN 5975-01-664-6108 is a Adapter,electrical Conduit, manufactured by Kato Engineering Inc., classified under FSC 5975, Electrical Hardware and Supplies. Status: active.
NSN 5975-01-664-6108 has 1 manufacturer part number on file: 558-11571-58 (Kato Engineering Inc.).
Key specifications for 558-11571-58: Style Designator: THREAD TO THREAD ENLARGER; Overall Length: 2.00 INCHES NOMINAL IN; Outside Diameter: 0.840 INCHES NOMINAL SECOND END IN; Thread Direction: RIGHT-HAND SECOND END. 18 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.