The Bearing Unit,ball, cataloged under National Stock Number 3130-01-247-6942, is classified within Federal Supply Class 3130 (Bearings, Mounted) of the Bearings group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3130-01-247-6942 |
| Primary Part Number | A51B18501-11 |
| Item Name | Bearing Unit,ball |
| FSC / FSG | 3130 / 31 — Bearings, Mounted |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OR GSS4310,CAGEC 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Mounting Hole Type | ROUND, UNTHREADED |
| Block Type | FIXED |
| Mounting Hole Diameter | 0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Width | 1.250 INCHES NOMINAL IN |
| Housing Width | 1.750 INCHES NOMINAL IN |
| Base Length | 0.500 INCHES NOMINAL IN |
| Alignment Type | RIGID |
| Surface Treatment | PLASTIC EPOXY AND PLASTIC POLYAMIDE OVERALL |
| Base Thickness | 0.230 INCHES NOMINAL IN |
| Bore Diameter | 0.2560 INCHES MINIMUM AND 0.2630 INCHES MAXIMUM IN |
| 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 |
|---|---|
| A51B18501-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51B18501-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51B18501-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 3130-01-247-6942 is a Bearing Unit,ball, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3130, Bearings, Mounted. Status: active.
NSN 3130-01-247-6942 has 1 manufacturer part number on file: A51B18501-11 (Northrop Grumman Systems Corporation).
Key specifications for A51B18501-11: Surface Treatment Document and Classification: MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OR GSS4310,CAGEC 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Mounting Hole Type: ROUND, UNTHREADED; Block Type: FIXED; Mounting Hole Diameter: 0.097 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN. 11 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.