The Fitting,freewheeling, cataloged under National Stock Number 1615-00-124-1637, 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1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1615-00-124-1637 |
| Item Name | Fitting,freewheeling |
| 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,ANODIZED PER BPS FW4001,L SHAPED BLOCK,DIM.,1.640 IN. NOM VERTICAL LEG,1.380 IN. NOM HORIZONTAL LEG,0.880 IN. NOM SQUARE BOTH LEGS,1.000 IN. SQUARE EXTENSION ON RIGHT SIDE CENTER,ONE HOLE 0.625 IN. MIN,0.627 IN. MAX DIA DRILLED THRU L CENTER SECTION AT RIGHT ANGLE TO LEG HOLES,VERTICAL LEG BOSSED PER AND10049-7 W/0.6250-18 NF CLASS 3 THREADS,HORIZONTAL LEG BOSSED PER AND10050-5 W/0.500-20 UNF CLASS 3B THREADS,ITEM USED ON FREEWHEELING LUBRICATION SYSTEM W |
| 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 |
|---|---|
| 206-040-245-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1615-00-124-1637 is a Fitting,freewheeling, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
Key specifications for 1615-00-124-1637: General Characteristics Item Description: ALUMINUM ALLOY QQ-A-250/4 COMP 2024-T4,ANODIZED PER BPS FW4001,L SHAPED BLOCK,DIM.,1.640 IN. NOM VERTICAL LEG,1.380 IN. NOM HORIZONTAL LEG,0.880 IN. NOM SQUARE BOTH LEGS,1.000 IN. SQUARE EXTENSION ON RIGHT SIDE CENTER,ONE HOLE 0.625 IN. MIN,0.627 IN. MAX DIA DRILLED THRU L CENTER SECTION AT RIGHT ANGLE TO LEG HOLES,VERTICAL LEG BOSSED PER AND10049-7 W/0.6250-18 NF CLASS 3 THREADS,HORIZONTAL LEG BOSSED PER AND10050-5 W/0.500-20 UNF CLASS 3B THREADS,ITEM USED ON FREEWHEELING LUBRICATION SYSTEM W. 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.