The Bearing,plain,rod End, cataloged under National Stock Number 3120-00-159-8419, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3120-00-159-8419 |
| Primary Part Number | A51M12557-1 |
| Item Name | Bearing,plain,rod End |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Shank Thread Length | 1.2810 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Bore Center to Shank End Distance | 1.8750 INCHES NOMINAL IN |
| Inner Member Width | 0.2790 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN |
| Outer Member Width | 0.2130 INCHES MINIMUM AND 0.2230 INCHES MAXIMUM IN |
| Style Designator | BALL TYPE |
| Thread Diameter | 0.312 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE ROD END BODY |
| Material Document and Classification | AMS 5630 ASSN STD SINGLE MATERIAL RESPONSE INNER MEMBER |
| Thread Direction | RIGHT-HAND |
| Shank Style | EXTERNALLY THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Bore Diameter | 0.1895 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Material | PLASTIC RACE LINER |
| Material | STEEL COMP 440C INNER MEMBER |
| Material | STEEL COMP 630 ROD END BODY |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Outer Member Outside Diameter | 0.7500 INCHES NOMINAL 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 |
|---|---|
| A51M12557-1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| A51M12557-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
| A51M12557-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 3120-00-159-8419 is a Bearing,plain,rod End, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-159-8419 has 1 manufacturer part number on file: A51M12557-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).
Key specifications for A51M12557-1: Shank Thread Length: 1.2810 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Bore Center to Shank End Distance: 1.8750 INCHES NOMINAL IN; Inner Member Width: 0.2790 INCHES MINIMUM AND 0.2810 INCHES MAXIMUM IN. 20 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.