The Bushing,sleeve, cataloged under National Stock Number 3120-01-121-5604, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Mayday Manufacturing Co.. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-121-5604 |
| Primary Part Number | BACB28T5-019 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Mayday Manufacturing Co. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 1.0300 INCHES MINIMUM AND 1.0320 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.4381 INCHES MINIMUM AND 0.4386 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Body Inside Diameter | 0.3120 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Flange Width | 0.0570 INCHES MINIMUM AND 0.0620 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 |
|---|---|
| BACB28T5-019 PRIMARY | Mayday Manufacturing Co. (USA) |
| BACB28T5-019 PRIMARY | All Power Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| BACB28T5-019 | 3/2 Design control — primary reference U.S. Government activity |
| BACB28T5-019 | 5/9 Secondary reference Mamco Mfg Co Inc |
| BACB28T5-019 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 3120-01-121-5604 is a Bushing,sleeve, manufactured by Mayday Manufacturing Co., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-121-5604 has 2 manufacturer part numbers on file: BACB28T5-019 (Mayday Manufacturing Co.), BACB28T5-019 (All Power Manufacturing Co.).
Key specifications for BACB28T5-019: Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 1.0300 INCHES MINIMUM AND 1.0320 INCHES MAXIMUM IN; Body Outside Diameter: 0.4381 INCHES MINIMUM AND 0.4386 INCHES MAXIMUM IN; Style Designator: SOLID, EXTERNAL FLANGE ONE END. 7 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.