The Bearing,ball,annular, cataloged under National Stock Number 3110-01-082-8751, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corp Div Timken Super Precision. Government technical data includes 19 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3110-01-082-8751 |
| Primary Part Number | S812STHH5P38LG38 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Lubrication Material | GREASE |
| Internal Clearance | 0.0003 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE INNER RING |
| Overall Outside Diameter | 0.7500 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Standard Tolerance Designation | ABEC NO. 5P |
| Bore Diameter | 0.5000 INCHES NOMINAL IN |
| Material | STEEL COMP 440C INNER RING |
| Material | STEEL COMP 440C OUTER RING |
| Material | STEEL COMP 440C BALL |
| Material | PLASTIC TETRAFLUOROETHYLENE SPACER |
| Lubrication Material Document and Classification | ANDOK B, CAGEC 29700 ASSN STD 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 |
| Part Number | Manufacturer |
|---|---|
| S812STHH5P38LG38 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| SSRI1212ZZSLA5P38LY669 PRIMARY | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| Reference | Meaning |
|---|---|
| S812THH5LG38 | 5/1 Secondary reference Mpb Corp Div Timken Super Precision |
| 3TKLDD8-12ULG38 | 5/1 Secondary reference Mpb Corporation Dba Mpb Corp |
| S812STHH5LG38 | 5/1 Secondary reference Mpb Corp Div Timken Super Precision |
| SSRI1212ZZSLA5P38LG38 | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Precision Division |
NSN 3110-01-082-8751 is a Bearing,ball,annular, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-082-8751 has 2 manufacturer part numbers on file: S812STHH5P38LG38 (Mpb Corp Div Timken Super Precision), SSRI1212ZZSLA5P38LY669 (New Hampshire Ball Bearings Inc Div Precision Division).
1 possible match (shared part number, not a government interchangeability claim): 3110-01-161-1025. Verify interchangeability with system specifications before substitution.
Key specifications for S812STHH5P38LG38: Retainer Fabrication Method: MACHINED; Lubrication Material: GREASE; Internal Clearance: 0.0003 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND. 19 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.