Suzhou Runtai Precision Hardware Co,.Ltd.
We are professional manufacture factory of screws, bolts, rivets, nuts,bushing and non-standard fastener from China.
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Class 12.9 Alloy Steel 12-Point Screws Alloy Steel Torx Socket Flange Screws
Products Description
Good for high-strength fastening, these screws are made from steel comparable in strength to class 12.9 steel. The head makes 12 points of contact with a wrench to handle more torque than a socket head or hex head screw. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. To install, use a 12-point wrench that matches the head width of your screw. Head height includes the flange. Length is measured from under the flange.
Products Specification
| Thread Size | 1/4"-28 |
| Length | 1" |
| Threading | Fully Threaded |
| Head Width | 1/4" |
| Head Height | 1/4" |
| Flange Diameter | 3/8" |
| Material | Alloy Steel |
| Hardness | Rockwell C37 |
| Tensile Strength | 170,000 psi |
| Screw Size Decimal Equivalent | 0.250" |
| Thread Type | UNF |
| Thread Spacing | Fine |
| Thread Fit | Class 3A |
| Thread Direction | Right Hand |
| Head Type | 12-Point |
| Drive Style | External 12-Point |
| Screw Features | Flanged |
| Specifications Met | ASTM A574, IFI 115 |
| System of Measurement | Inch |
| RoHS | Compliant |
Note: Material, Size and Surface Treatment for choose.
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