| Item Name | Housing Bearing Unit |
| Federal Supply Group (FSG) | Bearings |
| Federal Supply Class (FSC) | 3130 Bearings Mounted |
| National Item Identification Number (NIIN) | 01-253-5979 (012535979) |
| NCB Code | USA (01) |
| Manufacturer | Timken Corporation, Amfs American Fleet Services |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKU | FLANGE THICKNESS | 0.656 INCHES NOMINAL |
| ABTB | MOUNTING HOLE DIAMETER | 0.516 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 2.1875 INCHES NOMINAL |
| AFWD | HOUSING LENGTH | 1.469 INCHES NOMINAL |
| AFWE | HOUSING WIDTH | 4.625 INCHES NOMINAL |
| AGKL | LUBRICATION FITTING TYPE | PIPE PLUG |
| AHZC | ASSEMBLY OVERALL LENGTH | 2.125 INCHES NOMINAL |
| CWGR | LUBRICATION FITTING ANGLE FROM HORIZONTAL CENTERLINE | 45.0 DEGREES NOMINAL |
| CWJW | MOUNTING HOLE TYPE | ROUND,UNTHREADED |
| CXCX | CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG SIDE OF A SQUARE | 3.625 INCHES NOMINAL |
| LBMA | LUBRICATION MATERIAL | GREASE |
| MATT | MATERIAL | IRON CAST OVERALL |
| STYL | STYLE DESIGNATOR | FLANGE BLOCK |
| Components Related to NSN - 3130-01-253-5979, 3130012535979 | ||||
| 3120-01-131-7640 (3120011317640) | 3110-01-166-8143 (3110011668143) | 3110-01-585-1068 (3110015851068) | 3120-01-208-1623 (3120012081623) | |
| 3120-00-993-4299 (3120009934299) | 3120-00-401-6084 (3120004016084) | 3110-01-537-0879 (3110015370879) | 3120-00-989-0036 (3120009890036) | |
| 3120-01-494-5426 (3120014945426) | 3120-00-080-9411 (3120000809411) | 3110-00-293-8389 (3110002938389) | 3110-00-227-3199 (3110002273199) | |
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