Durable 6 Lobe Pan Head Tapping Screws

Xiaoguo® exports Durable 6 Lobe pan head tapping screws – Torx drive won’t slip, pan head protects soft materials, self‑tapping threads cut into metal or plastic. Maintenance? Just check tightness once a year. Looking for a Manufacturer? Ask us.

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Product Description

Upgrade your assembly efficiency with xiaoguo's latest heavy-duty fasteners! We offer premium Durable 6 Lobe pan head tapping screws designed for sheet metal, plastics, and wood applications. Whether you are looking to import high-quality screws or find a reliable long-term supplier, xiaoguo is your go-to partner. Click to get a quote and optimize your supply chain today!

Product Definition

Product Name: Durable 6 Lobe pan head tapping screws

Drive type: Torx / 6-lobe recess, in accordance with standard dimensions

Head shape: pan head. The top surface is flat or slightly curved, and the bottom surface is smooth, providing a large pressure-bearing area.

Thread type: tapping thread, with a larger pitch and a deeper tooth profile

Tail shape: Conical tip. Some specifications have cutting grooves.

Material: Carbon steel or stainless steel

Brief description: The Durable 6 Lobe pan head tapping screws is a self-tapping threaded fastener with a disc-shaped head and a 6-lobe recessed driving groove. It is suitable for rapid fastening of materials such as metal sheets, plastics, and wood, and is particularly suitable for automated assembly and applications that require a large installation torque.

Product maintenance

The lifespan of the Durable 6 Lobe pan head tapping screws mainly depends on the material and the installation environment.

Estimated usage time

Material + Surface	Indoor Dry	Indoor Wet	Ordinary Outdoor	Coastal Outdoor
Carbon steel + electro-galvanizing	10–15 years	3–5 years	2–3 years	Not applicable
Carbon steel + Dacromet	More than 20 years	15–20 years	15–20 years	5–8 years
Stainless steel A2	Over 50 years	Over 30 years	15-20 years	5-10 years
Stainless steel A4	Over 50 years	Over 50 years	Over 30 years	20 - 30 years

Five situations where new Durable 6 Lobe pan head tapping screws are necessary

6 lobes are severely worn out

Severe wear of the threads

The corrosion is severe. The area of red rust on the carbon steel screws exceeds 20%, or there are rust pits.

The head has cracks or obvious depressions.

Disassembled and reassembled more than 5 times

Durable 6 Lobe Pan Head Tapping Screws

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
da max	3.5	4.1	4.9	5.6	6.3	7.3
dk max	5.6	7	8	9.5	11	12
dk min	5.3	6.64	7.64	9.14	10.57	11.57
k max	2.4	2.6	3.1	3.7	4	4.6
k min	2.15	2.35	2.8	3.4	3.7	4.3
r max	0.1	0.1	0.2	0.2	0.25	0.25
No.	T10	T15	T20	T25	T25	T30
e	2.8	3.35	3.95	4.5	4.5	5.6
t max	1.27	1.4	1.8	2.03	2.03	2.42
t min	1.01	1.14	1.42	1.65	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

Replacement steps

Remove old screws: Use a special tool to unscrew them counterclockwise.

Check the original hole: The hole wall is intact and the hole diameter has not increased → Install the new screw directly.

The hole has become larger → Replace with a larger screw or fill with wood chips and glue before re-drilling.

Clean the hole: Blow away the dust and debris.

Install new screws: Tighten them to the original torque, but do not over-tighten.

FAQ

What are the differences between pan head and countersunk?

The pan head is exposed on the surface after being tightened and does not require a countersink; it has a larger bearing area. The countersunk type requires a pre-drilled conical hole and becomes flush with the surface after being tightened. The pan head is more suitable for thin plates, plastics and other soft materials.

What types of threads are there?

They are mainly divided into AB type (with pointed tail, extruded shape, used for thin metal sheets and plastics) and C type (with cutting grooves, used for hard plastics or cast iron). The standard is full thread.