
SWENN Hex Head self-tapping type BZ full & partial thread screws are designed to tap on the pre-drilled hole. Offering excellent corrosion resistance from A2/304 and high tapping performance. Ideal for roofing and cladding applications.
| Article Code | Size | Washer Ø mm | Thread Type | Clamping Thickness mm |
|---|---|---|---|---|
| SW63X25BZ19304 | 6.3x25 | 19 | Full Thread | 2.0-12 |
| SW63X40BZ19304 | 6.3x40 | 19 | Full Thread | 2.0-27 |
| SW63X75BZ19304 | 6.3x75 | 19 | Full Thread | 2.0-62 |
| SW63X115BZ19304 | 6.3x115 | 19 | Partial Thread | 50-102 |
| SW63X130BZ19304 | 6.3x130 | 19 | Partial Thread | 65-117 |
| SW63X150BZ19304 | 6.3x150 | 19 | Partial Thread | 80-137 |
| SWHT63X100BZ19304 | 6.3x100 | 19 | High Thread | 50-90 |
| SWHT63X175BZ19304 | 6.3x175 | 19 | High Thread | 100-165 |
Stainless Steel Grades
SS304/A2: High stainless steel grade recommended for mid to high corrosion environment.
SS316/A4: Excellent stainless steel grade recommended for harsh corrosion environment.
Stainless steel screws are compatible with different panel finishes like PVDF, Polyester, Aluzinc and Aluminium.
Tapping Capacity and Pilot Hole
| Metal Thickness, mm | Pilot Hole Dia, mm |
| 3.42 | 5.30 |
| 4.16 | 5.50 |
| 5.70 | 5.50 |
| 8.00 | 5.70 |
| >8.00 | 5.70 |
Technical Specifications
| Socket size | 3/8, SW10 |
| Head type | Hex Head |
| Diameter | 6.5 mm |
| Materials Finish | Stainless Steel 304/A2 Grade |
| Base materials | Carbon steel, PVDF, Polyester, Aluzinc coated & Aluminium. |
| Use conditions | Indoor and outdoor use, corrosive environment with mid-high humidity. |
| Washer type | Stainless Steel A2 Washer Bonded to EPDM 3 mm for watertight fastening |
| Screw gun speed | 600-800 RPM |