The Screw,machine, cataloged under National Stock Number 5305-01-435-4107, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is American Society of Mechanical Engineers Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-435-4107 |
| Primary Part Number | AESZ2M508020WB6A81 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | American Society of Mechanical Engineers Inc |
| Status | ACTIVE |
| Head Height | 2.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Screw Surface Treatment | ZINC |
| Fastener Length | 19.5 MILLIMETERS MINIMUM AND 20.5 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 0.8 |
| Thread Length | 18.4 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 5.0 MILLIMETERS MM |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL PROPERTY CLASS 9.8 |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Series Designator | M |
| Head Diameter | 5.3 MILLIMETERS MINIMUM AND 5.6 MILLIMETERS MAXIMUM MM |
| Screw Surface Treatment Document and Classification | ASTMB633,FE/ZN5,TY2 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 |
|---|---|
| AESZ2M508020WB6A81 | American Society of Mechanical Engineers Inc (USA) |
| Reference | Meaning |
|---|---|
| B1867BC050200 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-435-4107 is a Screw,machine, manufactured by American Society of Mechanical Engineers Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-435-4107 has 1 manufacturer part number on file: AESZ2M508020WB6A81 (American Society of Mechanical Engineers Inc).
Key specifications for AESZ2M508020WB6A81: Head Height: 2.2 MILLIMETERS MINIMUM AND 2.4 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Screw Surface Treatment: ZINC; Fastener Length: 19.5 MILLIMETERS MINIMUM AND 20.5 MILLIMETERS MAXIMUM MM. 14 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.