The Screw,shoulder, cataloged under National Stock Number 5305-01-591-9005, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Cummins Power Generation Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-591-9005 |
| Primary Part Number | AES20M10C025CZ7A31 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Cummins Power Generation Inc. |
| Status | ACTIVE |
| Head Height | 9.8 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 25.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.5 |
| Material Document and Classification | ASTM F738M, CLASS A1-70, CONDITION CW ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 10.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 15.7 MILLIMETERS MINIMUM AND 16.0 MILLIMETERS MAXIMUM MM |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| AES20M10C025CZ7A31 PRIMARY | Cummins Power Generation Inc. (USA) |
| Reference | Meaning |
|---|---|
| AES20M10C025CZ7A31 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-591-9005 is a Screw,shoulder, manufactured by Cummins Power Generation Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-591-9005 has 1 manufacturer part number on file: AES20M10C025CZ7A31 (Cummins Power Generation Inc.).
Key specifications for AES20M10C025CZ7A31: Head Height: 9.8 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 25.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 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.