The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-545-9215, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-545-9215 |
| Primary Part Number | SR4AR5P25L02 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Special Test Features | BEARING QUALITY TO BE ABEC 5 MIN |
| Criticality Code Justification | AGAV |
| Style Designator | 4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE |
| Overall Outside Diameter | 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Bore Diameter | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Material | STEEL COMP 440C BALL |
| Material | RUBBER SYNTHETIC RETAINER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| SR4AR5P25L02 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| 185148-7 | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
| SSR1-1214KCA5P25L02 | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| Reference | Meaning |
|---|---|
| SSR1-1214KCA5P25L02 | 5/2 Secondary reference U.S. Government activity |
NSN 3110-01-545-9215 is a Bearing,ball,airframe, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-545-9215 has 3 manufacturer part numbers on file: SR4AR5P25L02 (Mpb Corp Div Timken Super Precision), 185148-7 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division), SSR1-1214KCA5P25L02 (New Hampshire Ball Bearings Inc Div Precision Division).
Key specifications for SR4AR5P25L02: Special Test Features: BEARING QUALITY TO BE ABEC 5 MIN; Criticality Code Justification: AGAV; Style Designator: 4 POINT BALL CONTACT, SOLID INNER AND OUTER RINGS, NON-SEPARABLE; Overall Width: 0.217 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN. 7 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.