The Bumper, cataloged under National Stock Number 5340-01-381-9926, 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 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-381-9926 |
| Primary Part Number | 4457182 ITEM 46 |
| Item Name | Bumper |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside/top Flange Diameter | 2.500 INCHES NOMINAL IN |
| Material Hardness Rating | 45.0 DUROMETER NOMINAL |
| Material Document and Classification | MIL-R-15624, CLASS 3 MIL SPEC SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| 4457182 ITEM 46 PRIMARY | Naval Sea Systems Command (USA) |
| 5580571 ITEM 46 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5580571 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5580571 PC 46 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5340-01-381-9926 is a Bumper, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-381-9926 has 2 manufacturer part numbers on file: 4457182 ITEM 46 (Naval Sea Systems Command), 5580571 ITEM 46 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-383-2266, 3040-01-383-5751. Verify interchangeability with system specifications before substitution.
Key specifications for 4457182 ITEM 46: Overall Height: 1.500 INCHES NOMINAL IN; Outside/top Flange Diameter: 2.500 INCHES NOMINAL IN; Material Hardness Rating: 45.0 DUROMETER NOMINAL; Material Document and Classification: MIL-R-15624, CLASS 3 MIL SPEC SINGLE MATERIAL RESPONSE. 4 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.