The Bumper, cataloged under National Stock Number 5340-01-186-2983, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-186-2983 |
| Item Name | Bumper |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Shank Diameter | 1.140 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN |
| Outside/top Flange Diameter | 1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN |
| First Counterbore Diameter | 1.000 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Shank Length | 0.100 INCHES NOMINAL IN |
| Style Designator | COUNTERBORED FLANGE |
| Material Document and Classification | MIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE |
| First Counterbore Depth | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Material | PLASTIC |
| Hole Diameter | 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| 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 |
| Reference | Meaning |
|---|---|
| 172B4251P1 | 5/9 Secondary reference Bae Systems Controls Inc. |
| 172B4251P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-186-2983 is a Bumper, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-186-2983: Shank Diameter: 1.140 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN; Overall Height: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN; Outside/top Flange Diameter: 1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN; First Counterbore Diameter: 1.000 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN. 9 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.