The Plunger,cylinder,bo, cataloged under National Stock Number 1620-01-040-8455, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-040-8455 |
| Item Name | Plunger,cylinder,bo |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL AMS5643 CRES 17-4PH COND A,HEAT TREAT TO 135 KSI MIN PER STP54-013,0.690 IN. LG,ONE END NOM DIA 0.355 IN.,OTHER END NOM DIA 0.3735 IN.,BOTH ENDS 0.020X45 DEG PORM 5.0 DEG,ONE THRU HOLE MIN DIA 0.1253 IN. MAX DIA 0.1258 IN. IN |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 4G14595-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 1620-01-040-8455 is a Plunger,cylinder,bo, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
Key specifications for 1620-01-040-8455: General Characteristics Item Description: STEEL AMS5643 CRES 17-4PH COND A,HEAT TREAT TO 135 KSI MIN PER STP54-013,0.690 IN. LG,ONE END NOM DIA 0.355 IN.,OTHER END NOM DIA 0.3735 IN.,BOTH ENDS 0.020X45 DEG PORM 5.0 DEG,ONE THRU HOLE MIN DIA 0.1253 IN. MAX DIA 0.1258 IN. IN; Criticality Code Justification: FEAT; Special Features: FORM,FIT,FUNCTION; End Item Identification: ACFT C5A PO MASTER CY P/N 4G14572-101A MAIN LANDING GEAR A. 2 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 1620-01-040-8455 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.