The Bumper, cataloged under National Stock Number 5340-00-063-6713, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Skydyne Company. 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 | 5340-00-063-6713 |
| Primary Part Number | SKM645 |
| Item Name | Bumper |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Skydyne Company |
| Status | ACTIVE |
| Second Counterbore Depth | 0.057 INCHES NOMINAL IN |
| Outside/top Flange Diameter | 1.000 INCHES NOMINAL IN |
| Material Hardness Rating | 70.0 DUROMETER NOMINAL |
| Hole Depth | 0.250 INCHES NOMINAL IN |
| First Counterbore Diameter | 0.312 INCHES NOMINAL IN |
| Style Designator | FLAT TOP COUNTERBORED |
| First Counterbore Depth | 0.130 INCHES NOMINAL IN |
| Color | BLACK |
| Material | RUBBER SYNTHETIC |
| Hole Diameter | 0.187 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 |
|---|---|
| SKM645 PRIMARY | The Skydyne Company (USA) |
NSN 5340-00-063-6713 is a Bumper, manufactured by The Skydyne Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-063-6713 has 1 manufacturer part number on file: SKM645 (The Skydyne Company).
Key specifications for SKM645: Second Counterbore Depth: 0.057 INCHES NOMINAL IN; Overall Height: 0.437 INCHES NOMINAL IN; Outside/top Flange Diameter: 1.000 INCHES NOMINAL IN; Material Hardness Rating: 70.0 DUROMETER NOMINAL. 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.