The Bumper, cataloged under National Stock Number 5340-00-662-9635, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Atlantic India Rubber Co Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-662-9635 |
| Primary Part Number | 721 |
| Item Name | Bumper |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Atlantic India Rubber Co Inc |
| Status | ACTIVE |
| Bottom Flange Diameter | 0.344 INCHES NOMINAL IN |
| Outside/top Flange Diameter | 0.406 INCHES NOMINAL IN |
| Material Hardness Rating | 35.0 DUROMETER MINIMUM AND 45.0 DUROMETER MAXIMUM |
| Groove Diameter | 0.250 INCHES NOMINAL IN |
| Style Designator | DOUBLE FLANGE |
| Bottom Flange Width | 0.063 INCHES NOMINAL IN |
| Color | BLACK |
| Top Flange Width | 0.219 INCHES NOMINAL IN |
| Material | RUBBER NATURAL |
| 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 |
|---|---|
| 721 PRIMARY | Atlantic India Rubber Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 11290823 | 7/9 Vendor item drawing reference Ballistic Missile Defense Systems Command |
NSN 5340-00-662-9635 is a Bumper, manufactured by Atlantic India Rubber Co Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-662-9635 has 1 manufacturer part number on file: 721 (Atlantic India Rubber Co Inc).
Key specifications for 721: Bottom Flange Diameter: 0.344 INCHES NOMINAL IN; Overall Height: 0.406 INCHES NOMINAL IN; Outside/top Flange Diameter: 0.406 INCHES NOMINAL IN; Material Hardness Rating: 35.0 DUROMETER MINIMUM AND 45.0 DUROMETER MAXIMUM. 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.