The Bearing,ball,annular, cataloged under National Stock Number 3110-01-191-3227, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is New Hampshire Ball Bearings Inc Div Precision Division. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3110-01-191-3227 |
| Primary Part Number | SSRF-2ZZHA3P18LG68 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | New Hampshire Ball Bearings Inc Div Precision Division |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Lubrication Material | GREASE |
| Internal Clearance | 0.0001 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN |
| Internal Fit-Up Designation | LOOSE |
| Flange Outside Diameter | 0.4400 INCHES NOMINAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Alignment Type | RIGID |
| Flange Width | 0.0300 INCHES NOMINAL IN |
| Outer Ring Outside Diameter | 0.3750 INCHES NOMINAL IN |
| Standard Tolerance Designation | ABEC NO.3 |
| Bore Diameter | 0.1250 INCHES NOMINAL IN |
| Material | STEEL COMP 440C OVERALL |
| Lubrication Material Document and Classification | MIL-C-23827 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 |
| Part Number | Manufacturer |
|---|---|
| SSRF-2ZZHA3P18LG68 PRIMARY | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| SR2FCHH3 | Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation (USA) |
| S312-8 | Simmonds Precision Products Inc (USA) |
| Reference | Meaning |
|---|---|
| SFR23PPK18-168 | 5/1 Secondary reference U.S. Government activity |
| SR2FCHH3 | 5/1 Secondary reference New Hampshire Ball Bearings Inc Div Precision Division |
| SSRF-2ZZA3 | 5/1 Secondary reference Mpb Corp Div Timken Super Precision |
NSN 3110-01-191-3227 is a Bearing,ball,annular, manufactured by New Hampshire Ball Bearings Inc Div Precision Division, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-191-3227 has 3 manufacturer part numbers on file: SSRF-2ZZHA3P18LG68 (New Hampshire Ball Bearings Inc Div Precision Division), SR2FCHH3 (Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation), S312-8 (Simmonds Precision Products Inc).
1 possible match (shared part number, not a government interchangeability claim): 3110-01-273-0040. Verify interchangeability with system specifications before substitution.
Key specifications for SSRF-2ZZHA3P18LG68: Retainer Fabrication Method: PRESSED; Lubrication Material: GREASE; Internal Clearance: 0.0001 INCHES MINIMUM RADIAL AND 0.0008 INCHES MAXIMUM RADIAL IN; Internal Fit-Up Designation: LOOSE. 17 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.