The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-00-505-7057, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-00-505-7057 |
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Sealing Method | COMPRESSION |
| Opening Inside Diameter | 0.204 INCHES NOMINAL IN |
| Mounting Method | FRICTION |
| Style Designator | THRU-HOLE |
| Mounting Device Quantity | 1 |
| Base Inside Diameter | 6.806 INCHES NOMINAL IN |
| Material | RUBBER BODY |
| Hazardous Locations/environmental Protection | WATERTIGHT-NEMA TYPE 4 |
| 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 |
| Reference | Meaning |
|---|---|
| SM-B-131834 | 5/9 Secondary reference Multi-Flex Seals Inc |
| SM-B-131834 | 3/2 Design control — primary reference U.S. Government activity |
| P-11316C101 | 5/9 Secondary reference Projects Unlimited Inc |
| P11316 | 5/9 Secondary reference Projects Unlimited Inc |
NSN 5340-00-505-7057 is a Boot,dust and Moisture Seal, classified under FSC 5340, Hardware, Commercial. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6145-00-931-7260. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-00-505-7057: Overall Height: 6.095 INCHES NOMINAL IN; Sealing Method: COMPRESSION; Opening Inside Diameter: 0.204 INCHES NOMINAL IN; Mounting Method: FRICTION. 8 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.