The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-653-8657, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-653-8657 |
| Primary Part Number | AEB05M16E055WB9A21 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Head Height | 9.7 MILLIMETERS MINIMUM AND 10.8 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6H |
| Fastener Length | 55.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 2.0 |
| Thread Length | 55.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 16.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 26.2 MILLIMETERS MINIMUM AND 27.0 MILLIMETERS MAXIMUM MM |
| Surface Treatment | ZINC OVERALL |
| Thread Series Designator | ISO 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 |
|---|---|
| AEB05M16E055WB9A21 PRIMARY | The American Society of Mechanical Engineers (USA) |
| Reference | Meaning |
|---|---|
| 12587754 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5305-01-653-8657 is a Screw,cap,hexagon Head, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-653-8657 has 1 manufacturer part number on file: AEB05M16E055WB9A21 (The American Society of Mechanical Engineers).
Key specifications for AEB05M16E055WB9A21: Head Height: 9.7 MILLIMETERS MINIMUM AND 10.8 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6H; Fastener Length: 55.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 2.0. 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.