The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-188-4004, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-188-4004 |
| Primary Part Number | 240631 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Outer Ring Width | 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Style Designator | SINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDES |
| Overall Outside Diameter | 0.8750 INCHES NOMINAL IN |
| Load Direction | RADIAL |
| Bore Diameter | 0.4950 INCHES NOMINAL IN |
| Material | STEEL RETAINER |
| Material | STEEL BALL |
| Material | PLASTIC POLYTRIFLUOROETHYLENE SEAL |
| Inner Ring Width | 0.3080 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 240631 PRIMARY | Lockheed Martin Corporation (USA) |
| 240631 | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| 240631 | 5/9 Secondary reference Lockheed Martin Corp Electronics and Missiles Div |
| 240631 | 5/9 Secondary reference Timken Co Div the Timken Company |
NSN 3110-01-188-4004 is a Bearing,ball,airframe, manufactured by Lockheed Martin Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-188-4004 has 2 manufacturer part numbers on file: 240631 (Lockheed Martin Corporation), 240631 (Mpb Corp Div Timken Super Precision).
Key specifications for 240631: Outer Ring Width: 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN; Style Designator: SINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDES; Overall Outside Diameter: 0.8750 INCHES NOMINAL IN; Load Direction: RADIAL. 9 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.
NSN 3110-01-188-4004 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.