The Screw,machine, cataloged under National Stock Number 5305-01-668-7335, 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 17 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 | 5305-01-668-7335 |
| Primary Part Number | AESZ2M407020WC19B1 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Head Height | 2.80 MILLIMETERS MINIMUM AND 3.10 MILLIMETERS MAXIMUM MM |
| Screw Surface Treatment | CHROMATE ZINC |
| Fastener Length | 20.0 MILLIMETERS NOMINAL MM |
| Screw Material Document and Classification | ISO898-1 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Thread Pitch in Millimeters | 0.7 |
| Thread Length | 20.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 4.0 MILLIMETERS MM |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 05047-ASME B18.24-2015 NATIONAL STD/SPEC |
| Screw Material | STEEL PROPERTY CLASS 8.8 |
| Strength Grade Designation | 8.8 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 6H |
| Thread Series Designator | M |
| Head Diameter | 7.60 MILLIMETERS MINIMUM AND 8.00 MILLIMETERS MAXIMUM MM |
| Screw Surface Treatment Document and Classification | ASTM F1941,TYPE 5BT 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 |
|---|---|
| AESZ2M407020WC19B1 PRIMARY | The American Society of Mechanical Engineers (USA) |
NSN 5305-01-668-7335 is a Screw,machine, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-668-7335 has 1 manufacturer part number on file: AESZ2M407020WC19B1 (The American Society of Mechanical Engineers).
Key specifications for AESZ2M407020WC19B1: Head Height: 2.80 MILLIMETERS MINIMUM AND 3.10 MILLIMETERS MAXIMUM MM; Screw Surface Treatment: CHROMATE ZINC; Fastener Length: 20.0 MILLIMETERS NOMINAL MM; Screw Material Document and Classification: ISO898-1 NATIONAL SPEC SINGLE MATERIAL RESPONSE. 17 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.