Button Round Head Torx Screw
Button head Torx screws feature a rounded, low-profile head with an internal six-lobe drive. The Torx profile provides secure engagement between the screw and driving tool, helping reduce slipping during installation, while the rounded head provides a broad bearing surface and a clean, compact appearance. They are available in metric and inch sizes, with carbon steel, alloy steel, and stainless steel options. Different thread specifications, Torx drive sizes, surface finishes, and mechanical property classes can be supplied according to the applicable standard or customer drawing.
We manufacture button head Torx screws using multi-station cold heading and precision thread rolling equipment, with production processes selected according to the screw size, material, and required configuration. Cold heading is used to form the button head and drive features with consistent dimensions, while thread rolling produces uniform external threads and helps maintain thread accuracy. Our production process supports different head dimensions, thread specifications, materials, and finishes, with dimensional, thread, and mechanical requirements checked during production and final inspection.
Specification:
| Item | Metric Button Round Head Torx Screw | Inch Button Round Head Torx Screw |
|---|---|---|
| Size Range | M1.4-M12 | 4# - 1/2“ |
| Dimension Standard | ISO 14583 | ASME B 18.3 |
| Thread | ISO Metric Coarse,Fine Thread | UNC,UNF |
| Thread Standard | ISO 68-1,ISO 965 | ASME B1.1 |
| Thread Class | 6g | 2A |
| Material | Cabon Steel,Alloy Steel,Stainless Steel | Cabon Steel,Alloy Steel,Stainless Steel |
| Steel Property Class | ISO898-1,Class 8.8,10.9,12.9 | ASTM F835 |
| Stainless Steel Class | A2-70,A2-80,A4-70,A4-80 | ASTM F879 |
| Surface Treatment | Black Oxidation, Zinc Plated, HDG, Dacromet, Bright Finish,Passivation | |
| Inspection | Dimension,Thread,Mechanical Proeprty,Coating | |
- RELATED SCREW LISTS:
- Countersunk Head Torx Screw
- Button Round Head Torx Screw
- Cylindrical Head Torx Screw
- Countersunk Head Torx Screw with Pin
- Cylindrical Head Torx Screw with Pin
- Hexagon Socket Countersunk Head Cap Screw
- Hexagon Socket Head Cap Screw
- Flat Countersunk Head Screw with Cross Recess
- Pan Head Screw with Cross Recess
- Slotted Countersunk Head Screw
- Slotted Pan Head Screw
Mechanical Property:
ISO 898-1 — Carbon and Alloy Steel
Metric carbon and alloy steel button head Torx screws can be supplied according to ISO 898-1. Mechanical properties are determined by the specified property class, with requirements covering tensile strength, yield or proof strength, elongation, and hardness.
Metric stainless steel button head Torx screws can be supplied according to ISO 3506-1. Common property classes include A2-70 and A4-80, with mechanical requirements defined according to the specified stainless steel group and property class.
Inch-size alloy steel button head Torx screws can be supplied to the applicable mechanical requirements of ASTM F835. The standard specifies mechanical requirements for socket button head screws, including tensile strength, yield strength, elongation, and hardness.
Inch-size stainless steel button head Torx screws can be supplied according to ASTM F879. The standard covers stainless steel socket button head screws and defines mechanical requirements according to the specified material condition and applicable requirements.