The Bumper, cataloged under National Stock Number 5340-01-486-3363, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-486-3363 |
| Primary Part Number | 122-681873 PC 3 |
| Item Name | Bumper |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside/top Flange Diameter | 3.500 INCHES NOMINAL IN |
| First Counterbore Diameter | 2.250 INCHES NOMINAL IN |
| Shank Length | 0.781 INCHES NOMINAL IN |
| Style Designator | COUNTERBORED FLANGE |
| Material | STEEL |
| Hole Diameter | 2.250 INCHES NOMINAL 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 |
| Part Number | Manufacturer |
|---|---|
| 122-681873 PC 3 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 681873 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5340-01-486-3363 is a Bumper, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-486-3363 has 1 manufacturer part number on file: 122-681873 PC 3 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-486-3367. Verify interchangeability with system specifications before substitution.
Key specifications for 122-681873 PC 3: Overall Height: 1.562 INCHES NOMINAL IN; Outside/top Flange Diameter: 3.500 INCHES NOMINAL IN; First Counterbore Diameter: 2.250 INCHES NOMINAL IN; Shank Length: 0.781 INCHES NOMINAL IN. 6 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.