The Screw,tapping, cataloged under National Stock Number 5305-01-730-8799, 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 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-730-8799 |
| Primary Part Number | AESS1B250750WH3D71 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Height | 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ASTM F1941, ZINC COATING FE/ZN, TYPE 3A INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL A |
| Nonmachine Thread Style | DOG TYPE (TYPE B OR C) |
| Material Document and Classification | ASME B 18.6.3 TAPPING OR DRIVE SCREW INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | DISHED HEXAGON |
| Specification/standard Data | 05047-ASME B18.24-2023 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| AESS1B250750WH3D71 PRIMARY | The American Society of Mechanical Engineers (USA) |
NSN 5305-01-730-8799 is a Screw,tapping, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-730-8799 has 1 manufacturer part number on file: AESS1B250750WH3D71 (The American Society of Mechanical Engineers).
Key specifications for AESS1B250750WH3D71: Nonmachine Nominal Thread Diameter: 0.2500 INCHES IN; Head Height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Fastener Length: 0.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: ASTM F1941, ZINC COATING FE/ZN, TYPE 3A INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL A. 12 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.