The Bearing Unit,ball, cataloged under National Stock Number 3130-01-003-3312, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3130-01-003-3312 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Status | ACTIVE |
| Lubrication Material | GREASE |
| Assembly Overall Length | 2.3125 INCHES NOMINAL IN |
| Housing Height | 5.0625 INCHES NOMINAL IN |
| Mounting Hole Type | ROUND, UNTHREADED |
| Style Designator | PILLOW BLOCK, SOLID |
| Mounting Hole Diameter | 1.2500 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Holes Along Width | 8.0000 INCHES NOMINAL IN |
| Housing Width | 10.1250 INCHES NOMINAL IN |
| Base Length | 2.8125 INCHES NOMINAL IN |
| Shaft End Type | OPEN |
| Base Thickness | 1.2500 INCHES NOMINAL IN |
| Bore Diameter | 1.5000 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Height From Bottom of Base to Bore Centerline | 2.6250 INCHES NOMINAL IN |
| Lubrication Material Document and Classification | MIL-G-18707 MIL SPEC SINGLE MATERIAL RESPONSE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| P324 | 3/9 Design control — primary reference Rexnord Industries, Llc Div Link-Belt Bearing Operation |
| 55204&3 | 5/9 Secondary reference U.S. Government activity |
NSN 3130-01-003-3312 is a Bearing Unit,ball, classified under FSC 3130, Bearings, Mounted. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3465-01-237-2569, 3120-01-575-1609. Verify interchangeability with system specifications before substitution.
Key specifications for 3130-01-003-3312: Lubrication Material: GREASE; Assembly Overall Length: 2.3125 INCHES NOMINAL IN; Housing Height: 5.0625 INCHES NOMINAL IN; Mounting Hole Type: ROUND, UNTHREADED. 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.