The Screw,machine, cataloged under National Stock Number 5305-01-656-2938, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-656-2938 |
| Primary Part Number | AESZAM407016CG2A81 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Head Height | 2.6 MILLIMETERS MINIMUM AND 3.0 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Screw Surface Treatment | ZINC AND CHROMATE |
| Fastener Length | 16.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.7 |
| Thread Length | 12.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 4.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 6.78 MILLIMETERS MINIMUM AND 7.00 MILLIMETERS MAXIMUM MM |
| Screw Material | STEEL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| 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 |
|---|---|
| AESZAM407016CG2A81 PRIMARY | The American Society of Mechanical Engineers (USA) |
| 60231965 | Bae Systems Gcs International Ltd (GBR) |
| Reference | Meaning |
|---|---|
| B18.24-2004 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
| AESZAM407016CG2A81 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-656-2938 is a Screw,machine, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-656-2938 has 2 manufacturer part numbers on file: AESZAM407016CG2A81 (The American Society of Mechanical Engineers), 60231965 (Bae Systems Gcs International Ltd).
Key specifications for AESZAM407016CG2A81: Head Height: 2.6 MILLIMETERS MINIMUM AND 3.0 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Screw Surface Treatment: ZINC AND CHROMATE; Fastener Length: 16.0 MILLIMETERS NOMINAL MM. 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.