The Pitch Horn Assy, cataloged under National Stock Number 1615-01-171-3853, 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-01-171-3853 |
| Item Name | Pitch Horn Assy |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,ROCKWELL HARDNESS RATING B SCALE 79 MIN,C SHAPED ITEM W/CIRCULAR MOUNTING PLATE ON LOWER END AND CLEVIS TURNED 90.0 DEG ON TOP END,6.955 IN. MIN,6.965 IN. MAX C TO C DISTANCE BETWEEN CLEVIS ENDS,1.841 IN. RADIUS MOUNTING PLATE,FOUR EQUALLY SPACED HOLES 0.386 IN. MIN,0.394 IN. MAX DIA DRILLED THRU ON 2.375 IN. DIA BOLT CIRCLE,TWO HOLES 0.381 IN. MIN,0.382 IN. MAX DIA ON 2.375 IN. DIA BOLT CIRCLE 27.0 DEG ABOVE AND BELOW HORIZONTAL CENTERLINE TWO BUSHINGS P/N 406-010-122-101 INSTALLED IN. CLEVIS ENDS,PITCH HORN ASSY IS USED ON MAIN ROTOR 58D AIRCRAFT IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 406-010-111-105 | 5/9 Secondary reference U.S. Government activity |
| 406-010-111-113 | 3/2 Design control — primary reference U.S. Government activity |
| 406-010-111-101 | 5/9 Secondary reference U.S. Government activity |
NSN 1615-01-171-3853 is a Pitch Horn Assy, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
Key specifications for 1615-01-171-3853: General Characteristics Item Description: STEEL,ROCKWELL HARDNESS RATING B SCALE 79 MIN,C SHAPED ITEM W/CIRCULAR MOUNTING PLATE ON LOWER END AND CLEVIS TURNED 90.0 DEG ON TOP END,6.955 IN. MIN,6.965 IN. MAX C TO C DISTANCE BETWEEN CLEVIS ENDS,1.841 IN. RADIUS MOUNTING PLATE,FOUR EQUALLY SPACED HOLES 0.386 IN. MIN,0.394 IN. MAX DIA DRILLED THRU ON 2.375 IN. DIA BOLT CIRCLE,TWO HOLES 0.381 IN. MIN,0.382 IN. MAX DIA ON 2.375 IN. DIA BOLT CIRCLE 27.0 DEG ABOVE AND BELOW HORIZONTAL CENTERLINE TWO BUSHINGS P/N 406-010-122-101 INSTALLED IN. CLEVIS ENDS,PITCH HORN ASSY IS USED ON MAIN ROTOR 58D AIRCRAFT 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 1615-01-171-3853 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.