The Seat,bearing, cataloged under National Stock Number 3110-01-208-5386, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Krobach Mfg. Corp. Dba Krobach Manufacturing Corp. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-01-208-5386 |
| Primary Part Number | 1663C20H01 |
| Item Name | Seat,bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Krobach Mfg. Corp. Dba Krobach Manufacturing Corp |
| Status | ACTIVE |
| Style Designator | FLAT RACE SURFACE |
| Material Document and Classification | 10110DU,FSCM 90099 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 12.4690 INCHES NOMINAL IN |
| Bore Diameter | 6.1200 INCHES NOMINAL IN |
| Material | STEEL 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 |
|---|---|
| 1663C20H01 | Krobach Mfg. Corp. Dba Krobach Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| 1663C20H01 | 3/2 Design control — primary reference U.S. Government activity |
| 1386G19 FIND 12 | 5/9 Secondary reference U.S. Government activity |
NSN 3110-01-208-5386 is a Seat,bearing, manufactured by Krobach Mfg. Corp. Dba Krobach Manufacturing Corp, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-208-5386 has 1 manufacturer part number on file: 1663C20H01 (Krobach Mfg. Corp. Dba Krobach Manufacturing Corp).
Key specifications for 1663C20H01: Style Designator: FLAT RACE SURFACE; Material Document and Classification: 10110DU,FSCM 90099 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Overall Width: 0.4400 INCHES NOMINAL IN; Outside Diameter: 12.4690 INCHES NOMINAL IN. 5 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.