The Rod,piston, cataloged under National Stock Number 1720-01-157-4940, is classified within Federal Supply Class 1720 (Aircraft Launching Equipment) of the Aircraft Launch, Landing, and Ground Handling Equipment group. The manufacturer of record is The Entwistle Company Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1720-01-157-4940 |
| Primary Part Number | 510941-5 |
| Item Name | Rod,piston |
| FSC / FSG | 1720 / 17 — Aircraft Launching Equipment |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL; 62.625 IN. LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 510941-5 | The Entwistle Company Llc (USA) |
| 510941-5 | York Precision Machining and Hydraulics, Llc (USA) |
| 510941-5 | Federal Equipment Co (USA) |
| 510941-5 | Airtronics, Llc (USA) |
| Reference | Meaning |
|---|---|
| 510941-5 | 5/9 Secondary reference Penn State Tool & Die Corp |
| 510941-5 | 5/9 Secondary reference Wellman Dynamics Machining and Assembly, Inc. |
| 510941-5 | 3/2 Design control — primary reference U.S. Government activity |
| 510941-5 | 5/9 Secondary reference U.S. Government activity |
| 510941-5 | 5/9 Secondary reference U.s.a. Spares Inc. |
| 510941-5 | 5/9 Secondary reference Acr Machine Llc |
| 510941-5 | 5/9 Secondary reference U.S. Government activity |
NSN 1720-01-157-4940 is a Rod,piston, manufactured by The Entwistle Company Llc, classified under FSC 1720, Aircraft Launching Equipment. Status: active.
NSN 1720-01-157-4940 has 4 manufacturer part numbers on file: 510941-5 (The Entwistle Company Llc), 510941-5 (York Precision Machining and Hydraulics, Llc), 510941-5 (Federal Equipment Co), 510941-5 (Airtronics, Llc).
Key specifications for 510941-5: General Characteristics Item Description: STEEL; 62.625 IN. LG IN; End Item Identification: MK 2 NOSE GEAR LAUNCH. 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.
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.