The Pitch Link,tail Rot, cataloged under National Stock Number 1615-01-185-8932, is classified within Federal Supply Class 1615 (Helicopter Rotor Blades, Drive Mechanisms and Components) of the Aircraft Components and Accessories group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Astro Division. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-01-185-8932 |
| Primary Part Number | ALK4-156DHS/FSP |
| Item Name | Pitch Link,tail Rot |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Manufacturer | New Hampshire Ball Bearings Inc Div Astro Division |
| Status | ACTIVE |
| 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 |
| Part Number | Manufacturer |
|---|---|
| ALK4-156DHS/FSP PRIMARY | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| Reference | Meaning |
|---|---|
| ALK4-156DHS | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Astro Division |
| ALK-156DHS | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Astro Division |
| 406-312-103-101 | 1/2 Source control — Government-approved source U.S. Government activity |
| ALK-156DHS/FSP | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Astro Division |
NSN 1615-01-185-8932 is a Pitch Link,tail Rot, manufactured by New Hampshire Ball Bearings Inc Div Astro Division, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
NSN 1615-01-185-8932 has 1 manufacturer part number on file: ALK4-156DHS/FSP (New Hampshire Ball Bearings Inc Div Astro Division).
Key specifications for ALK4-156DHS/FSP: End Item Identification: OH-58D AHIP (ARMY HELICOPTER IMPROVEMENT PROGRAM), ROTARY WING AIRCRAFT. 0 specifications are 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 1615-01-185-8932 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.