The Bearing Unit,ball, cataloged under National Stock Number 3130-01-138-8987, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3130-01-138-8987 |
| Primary Part Number | 167C2565 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Assembly Overall Length | 1.6400 INCHES MINIMUM AND 1.7400 INCHES MAXIMUM IN |
| Housing Height | 2.2200 INCHES MINIMUM AND 2.3400 INCHES MAXIMUM IN |
| Internal Fit-Up Designation | STANDARD |
| Rotating Element Locking Method | DIRECT |
| Block Type | FIXED |
| Style Designator | PILLOW BLOCK, SOLID |
| Features Provided | GROUND ROLLING ELEMENT GROOVE |
| Center to Center Distance Between Mounting Holes Along Width | 4.0000 INCHES NOMINAL IN |
| Housing Width | 5.0000 INCHES MINIMUM AND 5.1200 INCHES MAXIMUM IN |
| Base Length | 1.4700 INCHES MINIMUM AND 1.5300 INCHES MAXIMUM IN |
| Alignment Type | SELF-ALIGNING |
| Rolling Element Groove Quantity | 1 |
| Shaft End Type | OPEN |
| Base Thickness | 0.5900 INCHES MINIMUM AND 0.6500 INCHES MAXIMUM IN |
| Bore Diameter | 0.6250 INCHES MINIMUM AND 0.6260 INCHES MAXIMUM IN |
| Material | IRON CAST OVERALL |
| Height From Bottom of Base to Bore Centerline | 1.1830 INCHES MINIMUM AND 1.1880 INCHES MAXIMUM IN |
| Load Capability Type | RADIAL AND THRUST |
| 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 |
|---|---|
| 167C2565 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
| Reference | Meaning |
|---|---|
| 167C2565 | 5/9 Secondary reference Whitcraft North Inc |
| 167C2565 | 5/9 Secondary reference Altra Industrial Motion Corp. |
NSN 3130-01-138-8987 is a Bearing Unit,ball, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-138-8987 has 1 manufacturer part number on file: 167C2565 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
Key specifications for 167C2565: Assembly Overall Length: 1.6400 INCHES MINIMUM AND 1.7400 INCHES MAXIMUM IN; Housing Height: 2.2200 INCHES MINIMUM AND 2.3400 INCHES MAXIMUM IN; Internal Fit-Up Designation: STANDARD; Rotating Element Locking Method: DIRECT. 18 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.