High Torque 6 Lobe Flat Head Self Drilling Screw

Xiaoguo® High torque 6 Lobe Flat Head Self Drilling Screw China– no pre‑drilling, drills & taps in one go. 82°/90° flat head sits flush. Custom lengths, coatings, and drill points available. wholesale pricing ready – ask for a quote.

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Product Description

Xiaoguo® provides high-quality fasteners for global buyers. We offer premium High torque 6 Lobe Flat Head Self Drilling Screw for wholesale and bulk purchase. Customers can buy direct or customize specifications to improve efficiency and reduce costs.

Product Definition

Product Name: High torque 6 Lobe Flat Head Self Drilling Screw

Drive type: Torx / 6-lobe recess

Head shape: Flat Head, 90°, the top surface of the head is flat and the conical surface is smooth.

Tail structure: Self-Drilling Point, with a cutting edge, shaped like a small drill bit.

Thread type: Self-drilling and self-tapping thread, with a wide pitch, deep tooth profile, usually a full thread.

Material: Carbon steel or stainless steel

Surface treatment: Electro-galvanizing, hot-dip galvanizing, Dacromet coating, blackening, etc. For carbon steel materials, surface treatment is required.

Definition: The High torque 6 Lobe Flat Head Self Drilling Screw is a self-drilling and self-tapping fastener with an 82°/90° countersunk head, a six-lobed star-shaped drive groove, and a drill blade structure at the tail. Installation does not require pre-drilling. The drill tail can directly drill and thread holes on thin metal sheets such as steel plates, aluminum plates; plastics or wood, completing the three processes of drilling, tapping, and locking in one step. The star-shaped drive groove can withstand high torque and does not slip, and is suitable for automated assembly, sheet metal connections, building steel structures, and automotive manufacturing, where efficient fastening is required.

High Torque 6 Lobe Flat Head Self Drilling Screw

Customized service

The standard High torque 6 Lobe Flat Head Self Drilling Screw do cover the common sizes, but sometimes special lengths, different shank types or non-standard materials are required in actual applications. We can offer customized services:

Customized size

The basic dimensions of the product, such as diameter, length, countersunk angle, and head size, can all be adjusted according to your requirements.

Customized drill tail form

We can offer standard drill tail, special drill tail and customized drill tail hardness.

Special drill tail: Extended drill tail for thick plates or plates with insulation layers; Pointed drill tail for rapid penetration of thin plates; Self-drilling pointed tail without drill blade, for self-drilling into plastics or woods.

Drill tail hardness: By adjusting the heat treatment process, the drill tail can be made harder, suitable for high-strength steel plates, or with better toughness.

High Torque 6 Lobe Flat Head Self Drilling Screw

Mon	ST2.9	ST3.5	ST4.2	ST4.8	ST5.5	ST6.3
P	1.1	1.3	1.4	1.6	1.8	1.8
a	1.1	1.3	1.4	1.6	1.8	1.8
dk max	5.5	7.3	8.4	9.3	10.3	11.3
dk min	5.2	6.9	8	8.9	9.9	10.9
k max	1.7	2.35	2.6	2.8	3	3.15
No.	T10	T15	T20	T25	T25	T30
e	2.8	3.35	3.95	4.5	4.5	5.6
t max	0.91	1.3	1.58	1.78	2.03	2.42
t min	0.65	1	1.14	1.39	1.65	2.02
d max	2.9	3.53	4.22	4.8	5.46	6.25
d min	2.76	3.35	4.04	4.62	5.28	6.03
d1 max	2.18	2.64	3.1	3.58	4.17	4.88
d1 min	2.08	2.51	2.95	3.43	3.99	4.7

Customization of thread type

Wide pitch, suitable for standard self-drilling threads of metal sheets.

Fine-thread self-drilling screws for use with hard plastics or light alloys.

Material customization

High torque 6 Lobe Flat Head Self Drilling Screw made of carbon steel and stainless steel are the choices preferred by most customers.

Other materials such as brass and aluminum can also be customized for us.

Surface treatment customization

Most of the surface treatments can be carried out by us. The surface treatment of the product should be based on the actual usage environment of the product and the customers' requirements for product corrosion prevention. We will provide our professional suggestions.