The Lock,nut,main Rotor, cataloged under National Stock Number 1615-00-121-6450, 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1615-00-121-6450 |
| Item Name | Lock,nut,main Rotor |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY QQ-A-250/4 COMP 2024-T4 OR 2024-T3,ANODIZED FW4001 BELL HELICOPTER CO,DIM.,1.100 IN. NOM LG,0.732 IN. MIN,0.737 IN. MAX W,0.190IN. NOM THICK,LOWER LEFT AND RIGHT CORNERS CUT AT 45 DEG ANGLE BY 0.425 IN. LG,TOP CENTER RECESSED 0.192 IN. MIN,0.197 IN. MAX DEEP BY 0.900 IN. MIN,0.920 IN. MAX WIDE W/INSIDE CORNERS ROUNDED BY 0.125 IN. RADIUS,ONE HOLE 0.265 IN. MIN,0.270 IN. MAX DIA DRILLED THRU 0.250 IN. FROM BOTTOMAND 0.550 IN. FROM RIGHT SIDE,ONE HOLE0.046 IN. MIN,0.052 IN. MAX DIA DRILLED AT 45 DEG ANGLE TO LEFT SIDE CUT 0.120 IN. FROM LEFT EDGE AND 0.200IN. FROM TOP OF CUT IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 206-010-195-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1615-00-121-6450 is a Lock,nut,main Rotor, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
Key specifications for 1615-00-121-6450: General Characteristics Item Description: ALUMINUM ALLOY QQ-A-250/4 COMP 2024-T4 OR 2024-T3,ANODIZED FW4001 BELL HELICOPTER CO,DIM.,1.100 IN. NOM LG,0.732 IN. MIN,0.737 IN. MAX W,0.190IN. NOM THICK,LOWER LEFT AND RIGHT CORNERS CUT AT 45 DEG ANGLE BY 0.425 IN. LG,TOP CENTER RECESSED 0.192 IN. MIN,0.197 IN. MAX DEEP BY 0.900 IN. MIN,0.920 IN. MAX WIDE W/INSIDE CORNERS ROUNDED BY 0.125 IN. RADIUS,ONE HOLE 0.265 IN. MIN,0.270 IN. MAX DIA DRILLED THRU 0.250 IN. FROM BOTTOMAND 0.550 IN. FROM RIGHT SIDE,ONE HOLE0.046 IN. MIN,0.052 IN. MAX DIA DRILLED AT 45 DEG ANGLE TO LEFT SIDE CUT 0.120 IN. FROM LEFT EDGE AND 0.200IN. FROM TOP OF CUT 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.
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.