The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-01-138-1377, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-138-1377 |
| Primary Part Number | 11628999-1 |
| Item Name | Cup,tapered Roller Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Style Designator | STEEP ANGLE |
| Outside Diameter | 5.7500 INCHES MINIMUM AND 5.7510 INCHES MAXIMUM IN |
| Backface Corner Radius | 0.1300 INCHES NOMINAL IN |
| Material | STEEL COMP 4720 CUP |
| 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 |
|---|---|
| 11628999-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 10389112 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 3110-01-138-1377 is a Cup,tapered Roller Bearing, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-138-1377 has 1 manufacturer part number on file: 11628999-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11628999-1: Style Designator: STEEP ANGLE; Overall Width: 1.3438 INCHES NOMINAL IN; Outside Diameter: 5.7500 INCHES MINIMUM AND 5.7510 INCHES MAXIMUM IN; Backface Corner Radius: 0.1300 INCHES NOMINAL IN. 4 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.