The Locking Plate,nut and Bolt, cataloged under National Stock Number 5340-00-990-2161, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 10 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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-990-2161 |
| Primary Part Number | 4M8974 |
| Item Name | Locking Plate,nut and Bolt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| FSC Application Data | VEHICULAR POWER TRANSMISSION COMPONENTS |
| Distance Between Mounting Hole Centers | 2.125 INCHES NOMINAL IN |
| Center Radius | 2.120 INCHES NOMINAL IN |
| End Radius | 0.500 INCHES NOMINAL IN |
| Style Designator | RADIUS |
| Mounting Hole Diameter | 0.406 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | FLAT |
| Width | 0.750 INCHES NOMINAL IN |
| Prebent Locking Feature Location | END HOLE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 4M8974 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5340-00-990-2161 is a Locking Plate,nut and Bolt, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-990-2161 has 1 manufacturer part number on file: 4M8974 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4M8974: FSC Application Data: VEHICULAR POWER TRANSMISSION COMPONENTS; Distance Between Mounting Hole Centers: 2.125 INCHES NOMINAL IN; Center Radius: 2.120 INCHES NOMINAL IN; End Radius: 0.500 INCHES NOMINAL IN. 10 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.