The Ring Assembly,inner, cataloged under National Stock Number 1615-00-913-4053, 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-00-913-4053 |
| Item Name | Ring Assembly,inner |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY QQ-A-601 COMP 356-T6,ANODIZED,DIM.,7.750 IN. MIN,7.752IN. MAX ID,4.215 IN. MIN,4.225 IN. MAX ID LG,7.490 IN. MIN,7.500 IN. MAXINTERNAL FLANGE DIA,0.250 IN. NOM INTERNAL FLANGE W,TWO EXTENSION ARMS 45DEG EITHER SIDE OF VERTICAL CENTERLINE,ONE L SHAPED EXTENSION ARM AT 180 DEGFITTED WITH THREADED PIN,RING DRILLED W/16 EQUALLY SPACED HOLES 0.260 IN.DIA BY 0.850 IN. DEEP,COUNTERBORED 0.375 IN. DIA BY 0.155 IN. DEEP ON 8.312IN. DIA BOLT CIRCLE,HOLES TAPPED WITH 5/16-18 UNC CLASS 3B THREAD,ASSEMBLYCONSISTS OF,ONE PIN PART NO. 540-011-459-1,FOUR BUSHINGS PART NO.540-011-421-29,ONE SLEEVE PART NO. 204-011-423-1,ONE PIN PART NO.MS9048-174,SIXTEEN STUDS PART NO. SF1D1-9SA16A,SIXTEEN LOCKWIRES PART NO.RLRR24-SB-7 IN |
| 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 |
|---|---|
| 540-011-403-9 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1615-00-913-4053 is a Ring Assembly,inner, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
Key specifications for 1615-00-913-4053: General Characteristics Item Description: ALUMINUM ALLOY QQ-A-601 COMP 356-T6,ANODIZED,DIM.,7.750 IN. MIN,7.752IN. MAX ID,4.215 IN. MIN,4.225 IN. MAX ID LG,7.490 IN. MIN,7.500 IN. MAXINTERNAL FLANGE DIA,0.250 IN. NOM INTERNAL FLANGE W,TWO EXTENSION ARMS 45DEG EITHER SIDE OF VERTICAL CENTERLINE,ONE L SHAPED EXTENSION ARM AT 180 DEGFITTED WITH THREADED PIN,RING DRILLED W/16 EQUALLY SPACED HOLES 0.260 IN.DIA BY 0.850 IN. DEEP,COUNTERBORED 0.375 IN. DIA BY 0.155 IN. DEEP ON 8.312IN. DIA BOLT CIRCLE,HOLES TAPPED WITH 5/16-18 UNC CLASS 3B THREAD,ASSEMBLYCONSISTS OF,ONE PIN PART NO. 540-011-459-1,FOUR BUSHINGS PART NO.540-011-421-29,ONE SLEEVE PART NO. 204-011-423-1,ONE PIN PART NO.MS9048-174,SIXTEEN STUDS PART NO. SF1D1-9SA16A,SIXTEEN LOCKWIRES PART NO.RLRR24-SB-7 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 1615-00-913-4053 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.