The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-01-265-8636, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-265-8636 |
| Primary Part Number | 3-3781-301 |
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch |
| Status | ACTIVE |
| Material Document and Classification | ZZ-P-765,CLASS 2B FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Thickness | 0.015 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| Base Inside Diameter | 0.500 INCHES NOMINAL IN |
| Base Outside Diameter | 0.690 INCHES NOMINAL IN |
| Material | RUBBER SILICONE BODY |
| 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 |
|---|---|
| 3-3781-301 PRIMARY | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA) |
| Reference | Meaning |
|---|---|
| 755090A0157-1 | 7/9 Vendor item drawing reference U.S. Government activity |
NSN 5340-01-265-8636 is a Boot,dust and Moisture Seal, manufactured by Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-265-8636 has 1 manufacturer part number on file: 3-3781-301 (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch).
Key specifications for 3-3781-301: Overall Height: 0.500 INCHES NOMINAL IN; Material Document and Classification: ZZ-P-765,CLASS 2B FED SPEC SINGLE MATERIAL RESPONSE BODY; Material Thickness: 0.015 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN; Base Inside Diameter: 0.500 INCHES NOMINAL IN. 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.