The Plate,retaining,bearing, cataloged under National Stock Number 3110-01-178-6115, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-178-6115 |
| Primary Part Number | 21-135 |
| Item Name | Plate,retaining,bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc. |
| Status | ACTIVE |
| Length | 2.375 INCHES NOMINAL IN |
| Bolt Circle Hole Quantity | 2 |
| Mounting Hole Type | ROUND, UNTHREADED |
| Mounting Hole Arrangement Style | SINGLE BOLT HOLE CIRCLE |
| Overall Thickness | 0.1196 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Mounting Hole Diameter | 0.190 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | FLAT W/APERTURE |
| Aperture Diameter | 1.375 INCHES NOMINAL IN |
| Mounting Bolt Circle Diameter | 2.000 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Width | 1.8750 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 |
|---|---|
| 21-135 PRIMARY | Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc. (USA) |
| Reference | Meaning |
|---|---|
| 21-135 | 3/9 Design control — primary reference Baldor Electric Co |
NSN 3110-01-178-6115 is a Plate,retaining,bearing, manufactured by Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-178-6115 has 1 manufacturer part number on file: 21-135 (Abb Motors & Mechanical Inc Div Abb Motors and Mechanical Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-537-1610. Verify interchangeability with system specifications before substitution.
Key specifications for 21-135: Length: 2.375 INCHES NOMINAL IN; Bolt Circle Hole Quantity: 2; Mounting Hole Type: ROUND, UNTHREADED; Mounting Hole Arrangement Style: SINGLE BOLT HOLE CIRCLE. 13 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.