The Bearing Unit,ball, cataloged under National Stock Number 3130-00-757-9917, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Metadure Parts & Sales, Inc.. Government technical data includes 11 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-00-757-9917 |
| Primary Part Number | 301875-1 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Metadure Parts & Sales, Inc. |
| Status | ACTIVE |
| Seal Type | CARTRIDGE |
| Assembly Overall Length | 3.7500 INCHES NOMINAL IN |
| Flange Thickness | 0.4375 INCHES NOMINAL IN |
| Mounting Hole Type | ROUND, UNTHREADED |
| Style Designator | FLANGE BLOCK |
| Mounting Hole Diameter | 0.4375 INCHES NOMINAL IN |
| Housing Width | 3.7500 INCHES NOMINAL IN |
| Bolt Circle Diameter | 2.7500 INCHES NOMINAL IN |
| Bore Diameter | 1.0001 INCHES MINIMUM AND 1.0006 INCHES MAXIMUM IN |
| Material | CHROMIUM ALLOY BALL |
| Housing Length | 1.6250 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 |
NSN 3130-00-757-9917 is a Bearing Unit,ball, manufactured by Metadure Parts & Sales, Inc., classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-00-757-9917 has 2 manufacturer part numbers on file: 301875-1 (Metadure Parts & Sales, Inc.), 301875 (Metadure Parts & Sales, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-407-0755. Verify interchangeability with system specifications before substitution.
Key specifications for 301875-1: Seal Type: CARTRIDGE; Assembly Overall Length: 3.7500 INCHES NOMINAL IN; Flange Thickness: 0.4375 INCHES NOMINAL IN; Mounting Hole Type: ROUND, UNTHREADED. 11 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.