The Cylinder and Piston Assembly,lan, cataloged under National Stock Number 1620-01-171-3371, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-171-3371 |
| Item Name | Cylinder and Piston Assembly,lan |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| 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 | X |
| Reference | Meaning |
|---|---|
| 810AS1500 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 1J-3L147 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| AJ159237 | 5/9 Secondary reference U.S. Government activity |
| AJ159237A | 3/2 Design control — primary reference U.S. Government activity |
NSN 1620-01-171-3371 is a Cylinder and Piston Assembly,lan, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
Key specifications for 1620-01-171-3371: Special Features: STEEL CYLINDER BODY,AMS 5082; STEEL HEADS,CAPS,TIE RODS; AND PISTON ROD; PISTON ROD CASE HARDENED TO ROCKWELL C54, AND CHROME PLATED PER QQ-C-320, CL 2,TY 1; 1.000 IN. CYLINDER BORE; 10.880 IN. BODY LG; 12.000 IN. APPROX LG O/A; 5/16-24 UNF 2A THD CONNECTION END ON PISTON ROD; RECTANGULAR MTG FLANGE; FOUR 0.250 IN. DIA MTG HOLES; HOLES SPACED 2.000 IN. C TO C ALONG LG, AND 1.080 IN. ACROSS W; 2.500 IN. LG BY 1.500 IN. W BY 0.370 IN. MTG FLANGE THICKNESS A. 0 specifications are 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 1620-01-171-3371 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.