The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-423-4061, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-423-4061 |
| Primary Part Number | AES07M12D020WB9A91 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Head Height | 7.24 MILLIMETERS MINIMUM AND 7.76 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6H |
| Fastener Length | 20.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | QQ-Z-325,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.75 |
| Thread Length | 20.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 12.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 17.73 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL PROPERTY CLASS 10.9 OVERALL |
| Thread Series Designator | M |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AES07M12D020WB9A91 PRIMARY | The American Society of Mechanical Engineers (USA) |
| 933 04110 M12 X 20 | Fabory Metrican Inc (CAN) |
| Reference | Meaning |
|---|---|
| B18231B12020N | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-423-4061 is a Screw,cap,hexagon Head, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-423-4061 has 2 manufacturer part numbers on file: AES07M12D020WB9A91 (The American Society of Mechanical Engineers), 933 04110 M12 X 20 (Fabory Metrican Inc).
Key specifications for AES07M12D020WB9A91: Head Height: 7.24 MILLIMETERS MINIMUM AND 7.76 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6H; Fastener Length: 20.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: QQ-Z-325,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.