Flat Head / Round Body / Open-End

Applicable for thin or soft materials
With a large contact area
Excellent resistance to pulling and pushing forces

The flat head design offers higher torque and provides strong resistance to push-in forces on thin sheets, minimizing the risk of detachment.

Application & Setting

Simple construction with a large contact area.

Suitable for thin/soft materials
Flat head design reduces the risk of stripping
High locking ability
Compatible with various types of assembly tools, including rotational and straight-pull tools

Easy assembly, but lower anti-slip resistance compared to serrated styles.

Uploaded 07/07/2023 | PATTA Marketing

The flat head design offers higher torque and provides strong resistance to push-in forces on thin sheets, minimizing the risk of detachment.

Diameter (D)	Length (L)	Hole Diameter	Grip Range (E)	DK	DO
M4	11.5 13.5	6.1	0.5 - 2.5 2.5 - 4.5	0.8	9.3
M5	12.5 14.5	7.1	0.5 - 2.5 2.5 - 4.5	1.0	10.3
M6	15.0 16.5	9.1	0.5 - 2.5 2.5 - 4.0	1.5	12.3
M8	17.5 18.5	11.1	1.0 - 2.5 2.5 - 4.0	1.5	14.3
M10	21.5 23.0 25.0	13.1	1.0 - 2.5 2.5 - 4.0 4.0 - 6.0	1.5	16.3

Diameter (D)	Length (L)	Hole Diameter	Grip Range (E)	DK	DO
M4	0.453 0.531	0.240	0.020 - 0.098 0.098 - 0.177	0.031	0.366
M5	0.492 0.570	0.280	0.020 -0.098 0.098 - 0.177	0.039	0.408
M6	0.590 0.650	0.358	0.020 - 0.098 0.098 - 0.157	0.059	0.484
M8	0.689 0.728	0.437	0.039 -0.098 0.098 - 0.157	0.059	0.563
M10	0.846 0.906 0.984	0.516	0.039 - 0.098 0.098 - 0.157 0.157 - 0.236	0.059	0.642

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