The Pole Assembly,support-Restrainer, cataloged under National Stock Number 1730-01-358-1258, is classified within Federal Supply Class 1730 (Aircraft Ground Servicing Equipment) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The manufacturer of record is Gk Mechanical Systems Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Pole Assembly,support-Restrainer |
| FSC / FSG | 1730 — Aircraft Ground Servicing Equipment (FSG 17) |
| Manufacturers | Gk Mechanical Systems Llc (CAGE 3BU57) |
| Parameter | Value |
|---|---|
| NSN | 1730-01-358-1258 |
| Primary Part Number | 50-1209-03-056 |
| Item Name | Pole Assembly,support-Restrainer |
| FSC / FSG | 1730 / 17 — Aircraft Ground Servicing Equipment |
| Manufacturer | Gk Mechanical Systems Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 50-1209-03-056 PRIMARY | Gk Mechanical Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 70700-77517 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| 70700-77517-056 | 5/9 Secondary reference Stevens Manufacturing Co., Inc. |
| 70700-77517-056 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 1730-01-358-1258 is a Pole Assembly,support-Restrainer, manufactured by Gk Mechanical Systems Llc, classified under FSC 1730, Aircraft Ground Servicing Equipment. Status: active.
NSN 1730-01-358-1258 has 1 manufacturer part number on file: 50-1209-03-056 (Gk Mechanical Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 1730-01-358-2893. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1730-01-358-1258 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.