The Bumper, cataloged under National Stock Number 5340-01-525-3897, 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 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-525-3897 |
| Primary Part Number | 6390838-01 |
| Item Name | Bumper |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside/top Flange Diameter | 1.750 INCHES NOMINAL IN |
| Fastening Device Type | MACHINE SCREW |
| Style Designator | FLAT TOP |
| Fastening Device Size | SCREW CAP P/N 6390820-303; 0.250-20UNC-2A A |
| Material | RUBBER |
| 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 |
|---|---|
| 6390838-01 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6390838 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5340-01-525-3897 is a Bumper, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-525-3897 has 1 manufacturer part number on file: 6390838-01 (Naval Sea Systems Command).
Key specifications for 6390838-01: Overall Height: 0.790 INCHES NOMINAL IN; Outside/top Flange Diameter: 1.750 INCHES NOMINAL IN; Fastening Device Type: MACHINE SCREW; Style Designator: FLAT TOP. 5 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.