The Housing,drive Mechanism,helicopt, cataloged under National Stock Number 1615-01-147-6639, is classified within Federal Supply Class 1615 (Helicopter Rotor Blades, Drive Mechanisms and Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-01-147-6639 |
| Item Name | Housing,drive Mechanism,helicopt |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL,ALUMINUM ALLOY,MIL-A-21180,GRADE A356,CLASS 10,AMENDMENT NO. 1,HEAT TREAT,MIL-H-6088,T6,TOP AND BOTTOM CASTINGS,TOP 4.495 IN. MIN,4.505 IN. MAX O/A H AND O/A W,1.655 IN. MIN,1.665 IN. MAX LG,BOTTOM 9.562 IN. NOM H,9.490 IN. MIN,9.510 IN. MAX W,10.235 IN. MIN,10.245 IN. MAX LG,TOP PROVIDED WITH FOUR ATTACHMENT HOLES,5/16-18 UNC,CLASS 2B THD,MIN FULL THD DEPTH,BOTTOM PROVIDED WITH FOUR ATTACHMENT HOLES,1/2-13 UNC,CLASS 2B THD,33 SECURING HOLES ALONG FLANGES OF ENTIRE ASSY IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 42277R110P | 5/9 Secondary reference Goodrich Corporation Dba Trw Lucas Aerospace |
| 42277-110 | 5/9 Secondary reference U.S. Government activity |
| 42277R110 | 5/9 Secondary reference U.S. Government activity |
| 42277R110 | 3/9 Design control — primary reference Goodrich Corporation Dba Trw Lucas Aerospace |
| 42277R110P | 5/9 Secondary reference U.S. Government activity |
NSN 1615-01-147-6639 is a Housing,drive Mechanism,helicopt, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
Key specifications for 1615-01-147-6639: General Characteristics Item Description: MATERIAL,ALUMINUM ALLOY,MIL-A-21180,GRADE A356,CLASS 10,AMENDMENT NO. 1,HEAT TREAT,MIL-H-6088,T6,TOP AND BOTTOM CASTINGS,TOP 4.495 IN. MIN,4.505 IN. MAX O/A H AND O/A W,1.655 IN. MIN,1.665 IN. MAX LG,BOTTOM 9.562 IN. NOM H,9.490 IN. MIN,9.510 IN. MAX W,10.235 IN. MIN,10.245 IN. MAX LG,TOP PROVIDED WITH FOUR ATTACHMENT HOLES,5/16-18 UNC,CLASS 2B THD,MIN FULL THD DEPTH,BOTTOM PROVIDED WITH FOUR ATTACHMENT HOLES,1/2-13 UNC,CLASS 2B THD,33 SECURING HOLES ALONG FLANGES OF ENTIRE ASSY 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 1615-01-147-6639 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.