The Cap-Plug,protective,dust and Moi, cataloged under National Stock Number 5340-01-271-5249, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator. Government technical data includes 5 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. 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 | 5340-01-271-5249 |
| Primary Part Number | 75621 |
| Item Name | Cap-Plug,protective,dust and Moi |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator |
| Status | ACTIVE |
| Closed End Overall Diameter | 1.750 INCHES NOMINAL IN |
| Length Under Shoulder | 1.430 INCHES NOMINAL IN |
| Material Document and Classification | QQ-B-637, ALLOY 464, COMP 1 FED SPEC SINGLE MATERIAL RESPONSE |
| Open End Inside Diameter | 0.687 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 464 |
| 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 |
|---|---|
| 75621 PRIMARY | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| 75580 ITEM 22 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
NSN 5340-01-271-5249 is a Cap-Plug,protective,dust and Moi, manufactured by Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-271-5249 has 2 manufacturer part numbers on file: 75621 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), 75580 ITEM 22 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-369-4023. Verify interchangeability with system specifications before substitution.
Key specifications for 75621: Closed End Overall Diameter: 1.750 INCHES NOMINAL IN; Length Under Shoulder: 1.430 INCHES NOMINAL IN; Material Document and Classification: QQ-B-637, ALLOY 464, COMP 1 FED SPEC SINGLE MATERIAL RESPONSE; Special Features: 1.500-12 UN-2A THD; HAS 6 DRILLED HOLE THRU CORNERS OF HEX A. 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.