The Cap,cylinder Assy, cataloged under National Stock Number 1720-00-481-4177, 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 York Precision Machining and Hydraulics, Llc. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Cap,cylinder Assy |
| FSC / FSG | 1720 — Aircraft Launching Equipment (FSG 17) |
| Manufacturers | York Precision Machining and Hydraulics, Llc (CAGE 81A16); Airtronics, Llc (CAGE 58078); U.s.a. Spares Inc. (CAGE 1UF60) |
| Parameter | Value |
|---|---|
| NSN | 1720-00-481-4177 |
| Primary Part Number | 613881-1 |
| Item Name | Cap,cylinder Assy |
| FSC / FSG | 1720 / 17 — Aircraft Launching Equipment |
| Manufacturer | York Precision Machining and Hydraulics, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 613881-1 | York Precision Machining and Hydraulics, Llc (USA) |
| 613881-1 | Airtronics, Llc (USA) |
| 613881-1 | U.s.a. Spares Inc. (USA) |
| Reference | Meaning |
|---|---|
| 613881-1 | 5/9 Secondary reference U.S. Government activity |
| 613881-1 | 3/2 Design control — primary reference U.S. Government activity |
| 613881-1 | 5/9 Secondary reference Wellman Dynamics Machining and Assembly, Inc. |
NSN 1720-00-481-4177 is a Cap,cylinder Assy, manufactured by York Precision Machining and Hydraulics, Llc, classified under FSC 1720, Aircraft Launching Equipment. Status: active.
NSN 1720-00-481-4177 has 3 manufacturer part numbers on file: 613881-1 (York Precision Machining and Hydraulics, Llc), 613881-1 (Airtronics, Llc), 613881-1 (U.s.a. Spares Inc.).
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 1720-00-481-4177 has DEMIL Code B. 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.