The Fairlead,roller and Sheave, cataloged under National Stock Number 3815-01-443-6552, is classified within Federal Supply Class 3815 (Crane and Crane-shovel Attachments) of the Construction, Mining, Excavating Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3815-01-443-6552 |
| Primary Part Number | 6665642 |
| Item Name | Fairlead,roller and Sheave |
| FSC / FSG | 3815 / 38 — Crane and Crane-shovel Attachments |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Wire Rope Accommodated Diameter | 0.625 INCHES IN |
| Usage Design | GENERAL |
| Design Type | TRACK-RIDING |
| Sheave Outside Diameter | 12.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Roller Outside Diameter | 3.500 INCHES NOMINAL IN |
| Base Width | 3.250 INCHES NOMINAL IN |
| Line Quantity Accommodated | 1 |
| Roller Quantity | 1 |
| Base Length | 12.250 INCHES NOMINAL IN |
| Roller Mounting Position | ANY ACCEPTABLE |
| Bearing Type | ROLLER |
| Sheave Quantity | 1 LOCATION NOT OTHERWISE SPECIFIED |
| Material | STEEL ROLLER |
| Material | STEEL FRAME |
| Cable Opening Diameter | 0.750 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6665642 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3815-01-443-6552 is a Fairlead,roller and Sheave, manufactured by Naval Sea Systems Command, classified under FSC 3815, Crane and Crane-shovel Attachments. Status: active.
NSN 3815-01-443-6552 has 1 manufacturer part number on file: 6665642 (Naval Sea Systems Command).
Key specifications for 6665642: Overall Height: 19.500 INCHES NOMINAL IN; Wire Rope Accommodated Diameter: 0.625 INCHES IN; Usage Design: GENERAL; Design Type: TRACK-RIDING. 15 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.
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.