The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-424-0622, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-00-424-0622 |
| Primary Part Number | E4030 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Head Height | 0.750 INCHES NOMINAL IN |
| Fastener Length | 3.250 INCHES NOMINAL IN |
| Thread Length | 2.250 INCHES MINIMUM AND 2.562 INCHES MAXIMUM IN |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Designator | AS MODIFIED BY HEAD DIMENSIONS AND HOLE IN SHANK AND SPECIAL FEATURES |
| Width Between Flats | 1.312 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | 2 TYPE AND 10 STYLE |
| Minimum Tensile Strength | 120000 POUNDS PER SQUARE INCH LBS |
| Minimum Yield Strength | 85000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 8 |
| Material | STEEL 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 |
|---|---|
| E4030 PRIMARY | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| E4030 | 5/9 Secondary reference American Standard Inc Westinghouse Air Brake Co Div |
NSN 5305-00-424-0622 is a Screw,cap,hexagon Head, manufactured by Westinghouse Electric Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-424-0622 has 1 manufacturer part number on file: E4030 (Westinghouse Electric Corp).
Key specifications for E4030: Head Height: 0.750 INCHES NOMINAL IN; Fastener Length: 3.250 INCHES NOMINAL IN; Thread Length: 2.250 INCHES MINIMUM AND 2.562 INCHES MAXIMUM IN; Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL. 17 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.