The Bearing,plain,rod End, cataloged under National Stock Number 3120-01-028-9519, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is U S Bearings. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-028-9519 |
| Primary Part Number | BACB10A399M2 |
| Item Name | Bearing,plain,rod End |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | U S Bearings |
| Status | ACTIVE |
| Shank Thread Length | 0.7190 INCHES MINIMUM AND 0.8120 INCHES MAXIMUM IN |
| Bore Center to Shank End Distance | 1.3650 INCHES MINIMUM AND 1.3850 INCHES MAXIMUM IN |
| Inner Member Width | 0.4370 INCHES NOMINAL IN |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM ROD END BODY |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM RACE INSERT |
| Outer Member Width | 0.3320 INCHES MINIMUM AND 0.3470 INCHES MAXIMUM IN |
| Style Designator | BALL TYPE |
| Thread Diameter | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | BMS 3-8, MCDONNELL DOUGLAS CORP, MCDONNELL AIRCRAFT DIVISION MFR REF SINGLE MATERIAL RESPONSE LUBRICATION |
| Shank Width Across Wrench Flats | 0.3750 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Shank Style | INTERNALLY THREADED W/BEAD AND WRENCH FLATS AND INSPECTION HOLE |
| Surface Treatment | CADMIUM INNER MEMBER |
| Surface Treatment | CADMIUM ROD END BODY |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Static Radial Load Rating | 2100 POUNDS LBS |
| Bore Diameter | 0.1895 INCHES MINIMUM AND 0.1915 INCHES MAXIMUM IN |
| Material | LUBRICANT DRY FILM LUBRICATION |
| Material | STEEL COMP 630 OR STEEL COMP 631 OR STEEL COMP 410 RACE INSERT |
| Material | STEEL COMP E52100 OR STEEL COMP 440C INNER MEMBER |
| Material | STEEL COMP 4130 OR STEEL COMP 4340 ROD END BODY |
| Thread Series Designator | UNF |
| Inspection Hole Center to End Distance | 0.3120 INCHES NOMINAL IN |
| Outer Member Outside Diameter | 0.7710 INCHES MINIMUM AND 0.7910 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 |
|---|---|
| BACB10A399M2 | Roller Bearing Company of America, Inc. (USA) |
| BACB10A399M2 | Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA) |
| BACB10A399M2 | New Hampshire Ball Bearings Inc Div Precision Division (USA) |
| BACB10A399M2 | New Hampshire Ball Bearings Inc Div Astro Division (USA) |
| BACB10A399M2 PRIMARY | U S Bearings (USA) |
| Reference | Meaning |
|---|---|
| ARB 3-54-12 | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Astro Division |
| HB-3-145 | 5/9 Secondary reference U S Bearings |
| FXJ34-14B-2 | 5/9 Secondary reference Roller Bearing Company of America, Inc. |
| KB-3SS-1D6 | 5/9 Secondary reference U.S. Government activity |
| 51132DD | 5/9 Secondary reference Rbc Transport Dynamics Corp Div Rbc Transport Dynamics |
| BACB10A399M2 | 5/2 Secondary reference U.S. Government activity |
| AR3SS4-12 | 5/9 Secondary reference New Hampshire Ball Bearings Inc Div Precision Division |
| BRE-3065-M-2 | 5/9 Secondary reference U.S. Government activity |
| BACB10A399M2 | 1/2 Source control — Government-approved source U.S. Government activity |
| BACB10A399M2 | 5/2 Secondary reference U.S. Government activity |
NSN 3120-01-028-9519 is a Bearing,plain,rod End, manufactured by U S Bearings, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-028-9519 has 5 manufacturer part numbers on file: BACB10A399M2 (Roller Bearing Company of America, Inc.), BACB10A399M2 (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics), BACB10A399M2 (New Hampshire Ball Bearings Inc Div Precision Division), BACB10A399M2 (New Hampshire Ball Bearings Inc Div Astro Division), BACB10A399M2 (U S Bearings).
Key specifications for BACB10A399M2: Shank Thread Length: 0.7190 INCHES MINIMUM AND 0.8120 INCHES MAXIMUM IN; Bore Center to Shank End Distance: 1.3650 INCHES MINIMUM AND 1.3850 INCHES MAXIMUM IN; Inner Member Width: 0.4370 INCHES NOMINAL IN; Hardness Rating: 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER. 26 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.