The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-00-016-6921, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Amphenol Corp Div Amphenol Aerospace Operations. Government technical data includes 6 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-00-016-6921 |
| Primary Part Number | 10-123094-221 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Amphenol Corp Div Amphenol Aerospace Operations |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE |
| Design Type | FRICTION |
| Overall Diameter | 1.594 INCHES NOMINAL IN |
| Material Document and Classification | AMS 4150 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4122 ASSN STD SINGLE MATERIAL RESPONSE |
| Surface Treatment | CADMIUM |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10-123094-221 PRIMARY | Amphenol Corp Div Amphenol Aerospace Operations (USA) |
| 10168-001 PRIMARY | Astronautics Corporation of America (USA) |
NSN 5340-00-016-6921 is a Cap,protective,dust and Moisture, manufactured by Amphenol Corp Div Amphenol Aerospace Operations, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-016-6921 has 2 manufacturer part numbers on file: 10-123094-221 (Amphenol Corp Div Amphenol Aerospace Operations), 10168-001 (Astronautics Corporation of America).
2 possible matches (shared part number, not a government interchangeability claim): 3040-00-536-6387, 5905-00-764-4093. Verify interchangeability with system specifications before substitution.
Key specifications for 10-123094-221: Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE; Design Type: FRICTION; Overall Diameter: 1.594 INCHES NOMINAL IN; Material Document and Classification: AMS 4150 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4122 ASSN STD SINGLE MATERIAL RESPONSE. 6 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.