The Screw,machine, cataloged under National Stock Number 5305-01-503-8728, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5305-01-503-8728 |
| Primary Part Number | AES10M10C050CH1A81 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Extended Washer Thickness | 1.5 MILLIMETERS MINIMUM MM |
| Head Height | 9.7 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 4G G |
| Screw Surface Treatment | ZINC |
| Fastener Length | 50.0 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 18.7 MILLIMETERS MINIMUM AND 20.8 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 1.5 |
| Thread Length | 26.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 10.0 MILLIMETERS MM |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 12.6 MILLIMETERS MINIMUM AND 13.0 MILLIMETERS MAXIMUM MM |
| Screw Material | STEEL PROPERTY CLASS 12.9 |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Series Designator | M |
| Screw Surface Treatment Document and Classification | ASTM B633, TYPE II ASSN STD SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| AES10M10C050CH1A81 PRIMARY | The American Society of Mechanical Engineers (USA) |
| Reference | Meaning |
|---|---|
| B18234B10050N | 5/9 Secondary reference U.S. Government activity |
| B18.2.3.4M | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 5305-01-503-8728 is a Screw,machine, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-503-8728 has 1 manufacturer part number on file: AES10M10C050CH1A81 (The American Society of Mechanical Engineers).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-643-2941. Verify interchangeability with system specifications before substitution.
Key specifications for AES10M10C050CH1A81: Extended Washer Thickness: 1.5 MILLIMETERS MINIMUM MM; Head Height: 9.7 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 4G G; Screw Surface Treatment: ZINC. 16 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.