The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-286-6248, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-286-6248 |
| Primary Part Number | LL-HQ5-9138 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Surface Treatment Document and Classification | CAGE 94271, WESTON CONTROLS, MI5-28 MFR REF SINGLE TREATMENT RESPONSE |
| Design Type | FRICTION |
| Overall Diameter | 0.490 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN |
| Tube Outside Diameter for Which Designed | 0.177 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN |
| Special Test Features | SPECIAL QUALITY CONTROL TESTING |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | ASTM A581, TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE |
| Departure From Cited Document | AS MODIFIED BY PACKING AND PACKING-VISUAL INSPECTION |
| Surface Treatment | PASSIVATE |
| Test Data Document | 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 303 |
| Inside Diameter Length | 0.250 INCHES NOMINAL IN |
| Round Cap Outside Surface Condition | KNURLED |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY VISUAL INSPECTION WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| LL-HQ5-9138 | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| Reference | Meaning |
|---|---|
| 129302-1 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5340-01-286-6248 is a Cap,protective,dust and Moisture, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-286-6248 has 1 manufacturer part number on file: LL-HQ5-9138 (Defense Logistics Agency Dba Defense Supply Center Philadelphia).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-599-7361. Verify interchangeability with system specifications before substitution.
Key specifications for LL-HQ5-9138: Surface Treatment Document and Classification: CAGE 94271, WESTON CONTROLS, MI5-28 MFR REF SINGLE TREATMENT RESPONSE; Design Type: FRICTION; Overall Diameter: 0.490 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN; Tube Outside Diameter for Which Designed: 0.177 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN. 14 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.