The Screw,machine, cataloged under National Stock Number 5305-01-596-3720, 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 18 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 | 5305-01-596-3720 |
| Primary Part Number | AESZ2M407025CZ6A31 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Head Height | 2.8 MILLIMETERS MINIMUM AND 3.1 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6H |
| Bearing Surface of Head Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 25.0 MILLIMETERS NOMINAL MM |
| Screw Material Document and Classification | ASTM F738M, CLASS A1-50, CONDITION AF ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Pitch in Millimeters | 4.0 |
| Bearing Surface of Head Surface Treatment | PASSIVATE |
| Nominal Thread Diameter | 0.7 MILLIMETERS MM |
| Head Surface Treatment | PASSIVATE |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Head Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Series Designator | M |
| Head Diameter | 7.6 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM |
| Screw Surface Treatment Document and Classification | ASTM A380 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 |
|---|---|
| AESZ2M407025CZ6A31 PRIMARY | The American Society of Mechanical Engineers (USA) |
NSN 5305-01-596-3720 is a Screw,machine, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-596-3720 has 1 manufacturer part number on file: AESZ2M407025CZ6A31 (The American Society of Mechanical Engineers).
Key specifications for AESZ2M407025CZ6A31: Head Height: 2.8 MILLIMETERS MINIMUM AND 3.1 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6H; Bearing Surface of Head Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE; Screw Surface Treatment: PASSIVATE. 18 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.