The Pole Assembly,support-Restrainer, cataloged under National Stock Number 1730-01-278-8728, 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. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 1730-01-278-8728 |
| Primary Part Number | 50-1209-03-050 |
| Item Name | Pole Assembly,support-Restrainer |
| FSC / FSG | 1730 / 17 — Aircraft Ground Servicing Equipment |
| Manufacturer | Gk Mechanical Systems Llc |
| Status | ACTIVE |
| General Characteristics Item Description | HOLLOW TUBE; BALL CONNECTION ONE END,4.120 IN. LG,1.230 IN. DIA; TONGUE CONNECTION SECOND END,5.125 IN. LG,1.230 IN. DIA,2.065 IN. LG TONGUE W/0.375 IN. HOLE IN |
| 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 |
|---|---|
| 50-1209-03-050 PRIMARY | Gk Mechanical Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 70700-77517-050 | 3/9 Design control — primary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| 70700-77517 | D/9 Drawing number reference only Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 1730-01-278-8728 is a Pole Assembly,support-Restrainer, manufactured by Gk Mechanical Systems Llc, classified under FSC 1730, Aircraft Ground Servicing Equipment. Status: active.
NSN 1730-01-278-8728 has 1 manufacturer part number on file: 50-1209-03-050 (Gk Mechanical Systems Llc).
2 possible matches (shared part number, not a government interchangeability claim): 1730-01-358-1258, 1730-01-358-2893. Verify interchangeability with system specifications before substitution.
Key specifications for 50-1209-03-050: General Characteristics Item Description: HOLLOW TUBE; BALL CONNECTION ONE END,4.120 IN. LG,1.230 IN. DIA; TONGUE CONNECTION SECOND END,5.125 IN. LG,1.230 IN. DIA,2.065 IN. LG TONGUE W/0.375 IN. HOLE IN. 1 specification is documented in the U.S. Government catalog.
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 1730-01-278-8728 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.