The Nut,lock,gear Assembly, cataloged under National Stock Number 1615-00-065-9159, 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 Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-00-065-9159 |
| Primary Part Number | S6137-66707-1 |
| Item Name | Nut,lock,gear Assembly |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Manufacturer | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc |
| Status | ACTIVE |
| General Characteristics Item Description | 4130 STEEL MIL-S-6758,2.1875-16 THD,3.312 IN. OD,0.736 IN. THK8 1/4-28 TAPPED HOLES EQUALLY SPACED AND PARALLEL TO BORE 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 |
| Part Number | Manufacturer |
|---|---|
| S6137-66707-1 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| S6137-66707-1 PRIMARY | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc (USA) |
NSN 1615-00-065-9159 is a Nut,lock,gear Assembly, manufactured by Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
NSN 1615-00-065-9159 has 2 manufacturer part numbers on file: S6137-66707-1 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S6137-66707-1 (Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc).
Key specifications for S6137-66707-1: General Characteristics Item Description: 4130 STEEL MIL-S-6758,2.1875-16 THD,3.312 IN. OD,0.736 IN. THK8 1/4-28 TAPPED HOLES EQUALLY SPACED AND PARALLEL TO BORE 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 1615-00-065-9159 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.