The Plate,retaining,bearing, cataloged under National Stock Number 3110-01-178-5509, 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 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-178-5509 |
| Primary Part Number | 11672498 |
| Item Name | Plate,retaining,bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Countersink Diameter | 0.340 INCHES NOMINAL IN |
| Minor Thickness | 0.148 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN |
| Distance Between Holes Along Length | 3.448 INCHES NOMINAL IN |
| Mounting Hole Type | ROUND, THREADED, COUNTERSUNK |
| Counterbore Diameter | 4.340 INCHES MINIMUM AND 4.350 INCHES MAXIMUM IN |
| Counterbore Depth | 0.157 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | FOUR HOLES |
| Overall Thickness | 0.310 INCHES NOMINAL IN |
| Distance Between Holes Along Width | 3.448 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Cross-Sectional Shape Style | COUNTERBORED W/ APERTURE |
| Outside Diameter | 5.500 INCHES NOMINAL IN |
| Aperture Diameter | 4.000 INCHES NOMINAL IN |
| Distance From Horizontal Centerline to Center of Right Hole | 1.724 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Distance From Vertical Centerline to Center of Right Hole | 1.724 INCHES NOMINAL IN |
| Countersink Angle | 45.0 DEGREES NOMINAL |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1015 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 11672498 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3110-01-178-5509 is a Plate,retaining,bearing, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-178-5509 has 1 manufacturer part number on file: 11672498 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11672498: Countersink Diameter: 0.340 INCHES NOMINAL IN; Minor Thickness: 0.148 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN; Distance Between Holes Along Length: 3.448 INCHES NOMINAL IN; Mounting Hole Type: ROUND, THREADED, COUNTERSUNK. 20 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.