DIN EN ISO 10510 (S1):2011 Hex Head Tapping Screw and Flat Washer Assembly is characterized by a hex head tapping screw assembled with a flat washer under the ISO system and is intended for assemblies needing socket installation, tapping engagement, and a larger bearing surface.
The flat washer reduces indentation on sheet metal, the hex head supports fast torque application, and the tapping thread creates fastening engagement in pilot holes. In assembly, the design helps reduce supporting operations, improve positioning consistency, and maintain good interchangeability in repeated production or field service.
Typical applications include metal cladding, equipment brackets, vehicle accessories, HVAC equipment, and engineering installation. The product can be configured with washer diameter, screw size, plating, and corrosion-resistant material to suit indoor, outdoor, light-load, vibration-exposed, or export supply conditions.

Dimensions unit: inch
|
Thread size |
ST2.2 |
ST2.9 |
ST3.5 |
ST4.2 |
ST4.8 |
ST5.5 |
ST6.3 |
ST8 |
ST9.5 |
||
|
P |
Pitch |
0.8 |
1.1 |
1.3 |
1.4 |
1.6 |
1.8 |
1.8 |
2.1 |
2.1 |
|
|
k |
Max. |
1.6 |
2.3 |
2.6 |
3 |
3.8 |
4.1 |
4.7 |
6 |
7.5 |
|
|
Min. |
1.3 |
2 |
2.3 |
2.6 |
3.3 |
3.6 |
4.1 |
5.2 |
6.5 |
||
|
s |
Max. |
3.2 |
5 |
5.5 |
7 |
8 |
8 |
10 |
13 |
16 |
|
|
Min. |
3.02 |
4.82 |
5.32 |
6.78 |
7.78 |
7.78 |
9.78 |
12.73 |
15.73 |
||
|
e |
Min. |
3.38 |
5.4 |
5.96 |
7.59 |
8.71 |
8.71 |
10.95 |
14.26 |
17.62 |
|
|
h |
Standard type |
Nominal |
1 |
1 |
1 |
1 |
1 |
1.6 |
1.6 |
1.6 |
2 |
|
Enlarged size |
Nominal |
1 |
1 |
1 |
1 |
1.6 |
1.6 |
1.6 |
2 |
2.5 |
|
|
dc |
Standard type |
Max. |
5 |
7 |
8 |
9 |
10 |
12 |
14 |
16 |
20 |
|
Enlarged size |
Max. |
7 |
9 |
11 |
12 |
15 |
15 |
18 |
24 |
30 |
|
|
a |
Max. |
0.8 |
1.1 |
1.3 |
1.4 |
1.6 |
1.8 |
1.8 |
2.1 |
2.1 |
|
①, The mechanical properties of screws as components of combined self-tapping screws must comply with the requirements of ISO 2702. After assembly and heat treatment, the gasket must have a hardness of 90HV to 320HV.
Vickers hardness testing must be performed according to ISO 6507-1.
Test load: HV 10, nominal thickness h~1,2 mm
Test load: HV 30, nominal thickness h > 1,2 mm
Appropriate precautions must be taken before assembly
②, the name and code of the screw
ISO 1479, Hexagonal self-tapping screws, S1
③, Name and code of gasket:
ISO 10669, Flat washers - for combination self-tapping screws, standard N, extra L
FAQ
A: We take every inquiry seriously. On working days, we will respond within 12 hours after receiving your inquiry.
A: We focus on the production of fasteners made of carbon steel, stainless steel, and low-alloy steel. We are a direct manufacturer with independent production capacity. DIN EN ISO 10510 (S1):2011 Hex Head Tapping Screw and Flat Washer Assembly Factory. We own several fastener manufacturing facilities and have an international sales department, providing full-process services from production to export.
A: Customized production is our core business. We can develop and manufacture products based on the drawings or samples you provide.
A: Yes. In addition to custom products, we also produce general construction machinery parts (GET parts) for equipment such as excavators, including bucket teeth, tooth holders, corner blades, pins, clips, bolts and nuts. DIN EN ISO 10510 (S1):2011 Hex Head Tapping Screw and Flat Washer Assembly Wholesale.
A: We have 12 energy-efficient and environmentally friendly modern production lines (including one fully automatic shell molding line and four heat treatment lines), with an annual production capacity exceeding 20,000 tons, enabling us to steadily meet various order requirements.
A: Trade terms (such as FOB, CIF, etc.) are confirmed when quoting. For batch production, we typically require a 30% deposit, with the balance paid against the copy of the bill of lading. T/T is the main payment method accepted, and L/C can also be negotiated.
A: We are only 35 km away from Shanghai Port and Ningbo Port, so sea freight is the main mode of transportation, which is convenient and efficient. For urgent deliveries, we can also arrange air freight via Ningbo or Shanghai airports.
About Us
Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010. DIN EN ISO 10510 (S1):2011 Hex Head Tapping Screw and Flat Washer Assembly Suppliers in China.
The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.
With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.
Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time deliveryNEWS