
White zinc plating Countersunk cross self-tapping roller coaster silk Self tapping screw
Product Photos and Information
| Name | Self tapping screws | Materials | Carbon Steel/Stainless Steel |
| Standards | DIN ISO ANC BSW JIS etc. | Strength level | 8.8 etc. |
| Size | M1.5-M6 | Surface finish | ZPBLACK etc. |
| Length | 10-100 | Samples | Subject to availability and agreement |
Product Standards
| Hexagon head wood screws DIN 571 | ||||||||||
| Thread specification | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 16 | 20 | |
| d | ||||||||||
| ds | maximum value | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 16 | 20 |
| minimum | 3.52 | 4.52 | 5.52 | 6.42 | 7.42 | 9.42 | 11.3 | 15.3 | 19.3 | |
| d a | maximum value | 5 | 6 | 7.2 | 8.2 | 10.2 | 12.2 | 15.2 | 19.2 | 24.4 |
| k | Nominal | 2.8 | 3.5 | 4 | 5 | 5.5 | 7 | 8 | 10 | 13 |
| maximum value | 3.1 | 3.88 | 4.38 | 5.38 | 5.88 | 7.45 | 8.45 | 10.45 | 13.9 | |
| minimum | 2.5 | 3.13 | 3.63 | 4.63 | 5.13 | 6.55 | 7.55 | 9.55 | 12.1 | |
| s | Maximum value = nominal value | 7 | 8 | 10 | 12 | 13 | 17 | 19 | 24 | 30 |
| minimum | 6.64 | 7.64 | 9.64 | 11.57 | 12.57 | 16.57 | 18.48 | 23.16 | 29.16 | |
| e | minimum | 7.5 | 8.63 | 10.89 | 13.07 | 14.2 | 18.72 | 20.88 | 26.17 | 32.95 |
| The weight of one thousand pieces of steel ≈ kilograms | - | - | - | - | - | - | - | - | - | |
About Us
YONGYI Fasteners supports industrial and project fastener inquiries from Yongnian, Handan, China.
Our published company certificates, factory photographs, production information and selected supply references help buyers evaluate manufacturing and quality-control capabilities.
For a quotation, provide the product standard or drawing, size, material or grade, surface finish, quantity, packing requirement and destination.
Factory Introduction
Production Process
Packing and Shipping
Certificate


ISO 9001 Quality Management System Certificate (Chinese)

ISO 14001 Environmental Management System Certificate (English)

ISO 14001 Environmental Management System Certificate (Chinese)

ISO 45001 Occupational Health and Safety Management System Certificate (English)

ISO 45001 Occupational Health and Safety Management System Certificate (Chinese)
Exhibition/partner Photos


















