The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-303-9816, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Amz Alabama Inc.. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-303-9816 |
| Primary Part Number | 90428-991 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Amz Alabama Inc. |
| Status | ACTIVE |
| Head Height | 3.5 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6H |
| Fastener Length | 40.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.8 |
| Thread Length | 16.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 5.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 8.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Material | STEEL PROPERTY CLASS 8.8 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 |
|---|---|
| 90428-991 PRIMARY | Amz Alabama Inc. (USA) |
| 2121 2032-339 | Bae Systems Hagglunds Aktiebolag (SWE) |
| Reference | Meaning |
|---|---|
| 90428-991 | 5/9 Secondary reference U.s. Defense Services, Inc. Dba Usds |
| 2121 2032-339 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
NSN 5305-01-303-9816 is a Screw,cap,hexagon Head, manufactured by Amz Alabama Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-303-9816 has 2 manufacturer part numbers on file: 90428-991 (Amz Alabama Inc.), 2121 2032-339 (Bae Systems Hagglunds Aktiebolag).
Key specifications for 90428-991: Head Height: 3.5 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6H; Fastener Length: 40.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 0.8. 12 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.