The Roller,roller Fairlead, cataloged under National Stock Number 3815-01-370-1377, is classified within Federal Supply Class 3815 (Crane and Crane-shovel Attachments) of the Construction, Mining, Excavating Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3815-01-370-1377 |
| Primary Part Number | 2B1-05422 |
| Item Name | Roller,roller Fairlead |
| FSC / FSG | 3815 / 38 — Crane and Crane-shovel Attachments |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | MATL,NYLATRON;WEIGHT,22.0 LBS;11.740 IN. L;8.000 IN. DIA;W/ 2.500 IN. CENTER APERTURE LBS |
| 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 |
|---|---|
| 2B1-05422 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2D3-03648-10 | 5/9 Secondary reference Western Laboratories Ball Aerospace Systems Div Ball Corp |
| 2D3-03648 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 3815-01-370-1377 is a Roller,roller Fairlead, manufactured by Lake Shore Systems, Inc., classified under FSC 3815, Crane and Crane-shovel Attachments. Status: active.
NSN 3815-01-370-1377 has 1 manufacturer part number on file: 2B1-05422 (Lake Shore Systems, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 3815-01-370-1378, 3815-01-375-1502. Verify interchangeability with system specifications before substitution.
Key specifications for 2B1-05422: General Characteristics Item Description: MATL,NYLATRON;WEIGHT,22.0 LBS;11.740 IN. L;8.000 IN. DIA;W/ 2.500 IN. CENTER APERTURE LBS. 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.