The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-641-3529, 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 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-641-3529 |
| Primary Part Number | AES40C500B50BW0A11 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Thread Length | 2.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281, CLASS-A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| AES40C500B50BW0A11 PRIMARY | The American Society of Mechanical Engineers (USA) |
| 3M-1000407 | Cooper Cameron Corp Cooper Cameron Valves Div (USA) |
| 845-7526489-2B-08-A-3-N-E-022 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 845-7526489 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5305-01-641-3529 is a Screw,cap,socket Head, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-641-3529 has 3 manufacturer part numbers on file: AES40C500B50BW0A11 (The American Society of Mechanical Engineers), 3M-1000407 (Cooper Cameron Corp Cooper Cameron Valves Div), 845-7526489-2B-08-A-3-N-E-022 (Naval Sea Systems Command).
Key specifications for AES40C500B50BW0A11: Fastener Length: 2.500 INCHES NOMINAL IN; Thread Length: 2.500 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281, CLASS-A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.500 INCHES IN. 11 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.