The Bushing,sleeve, cataloged under National Stock Number 3120-01-331-1346, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Avalon Machine Products Inc. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-331-1346 |
| Primary Part Number | BACB28Y6C030 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Avalon Machine Products Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Outside Diameter | 0.5006 INCHES MINIMUM AND 0.5013 INCHES MAXIMUM IN |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.3750 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN |
| Specification/standard Data | 81205-BACB28Y MANUFACTURERS STANDARD |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | STEEL COMP 630 OVERALL |
| 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 |
|---|---|
| BACB28Y6C030 | Avalon Machine Products Inc (USA) |
| BACB28Y6C030 | All Power Manufacturing Co. (USA) |
| BACB28Y6C030 | Mayday Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| BACB28Y6C030 | 3/2 Design control — primary reference U.S. Government activity |
| BACB28Y6C030 | 5/2 Secondary reference U.S. Government activity |
NSN 3120-01-331-1346 is a Bushing,sleeve, manufactured by Avalon Machine Products Inc, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-331-1346 has 3 manufacturer part numbers on file: BACB28Y6C030 (Avalon Machine Products Inc), BACB28Y6C030 (All Power Manufacturing Co.), BACB28Y6C030 (Mayday Manufacturing Co.).
Key specifications for BACB28Y6C030: Surface Finish: 32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Outside Diameter: 0.5006 INCHES MINIMUM AND 0.5013 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.