The Bearing,sleeve, cataloged under National Stock Number 3120-01-286-7230, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Kamatics Corporation. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3120-01-286-7230 |
| Primary Part Number | HS5443-4 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Kamatics Corporation |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Outside Diameter | 1.3424 INCHES MINIMUM AND 1.3427 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OUTER LAYER |
| Material Document and Classification | MIL-B-81820 MIL SPEC SINGLE MATERIAL RESPONSE INNER LAYER |
| Body Inside Diameter | 1.1260 INCHES MINIMUM AND 1.1270 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 630 OUTER LAYER |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE AND PLASTIC POLYAMIDE NYLON AND PLASTIC PHENOLIC INNER LAYER |
| 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 |
|---|---|
| HS5443-4 PRIMARY | Kamatics Corporation (USA) |
| HS5443-4 PRIMARY | Roller Bearing Company of America, Inc. (USA) |
| Reference | Meaning |
|---|---|
| HS5443-4 | 5/9 Secondary reference Rbc Specline Inc Dba Specline Inc |
| HS5443-4 | 7/2 Vendor item drawing reference The Boeing Company |
| HS5443-4 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 3120-01-286-7230 is a Bearing,sleeve, manufactured by Kamatics Corporation, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-286-7230 has 2 manufacturer part numbers on file: HS5443-4 (Kamatics Corporation), HS5443-4 (Roller Bearing Company of America, Inc.).
Key specifications for HS5443-4: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Outside Diameter: 1.3424 INCHES MINIMUM AND 1.3427 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 10 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.