pan head self drillinf screw , Iran

A pan head self-drilling screw features a low-profile head with a wide diameter for uniform pressure distribution. The main manufacturing standards are DIN 7504 for metal applications and ISO 15482 for plastic substrates. The head angle typically ranges from 85 to 95 degrees with a height of 1.8 to 3.2 millimeters. Head diameter for size number 8 is approximately 7.5 millimeters, while size 1/4 inch reaches about 11 millimeters. The drive recess is commonly Phillips type (PH2 or PH3) or Pozidriv (PZ2) for higher torque transmission. Allowable torque for Pozidriv recess is roughly 30 percent higher compared to standard Phillips. Nominal lengths are manufactured from 13 millimeters up to 150 millimeters based on standard dimensional tables.

Thread sizes classify into four main diameter classes: number 6 (3.5 mm), number 8 (4.2 mm), number 10 (4.8 mm), and number 12 (5.5 mm). Size number 8 is the most common for joining metal sheets with thicknesses of 0.8 to 2 millimeters. Tensile strength for carbon steel grade 8.8 reaches 800 megapascals, while grade 10.9 achieves 1040 megapascals. The drill point follows DIN 7504 classification from type number 1 to number 4 based on material thickness. Type number 2 is suitable for steel sheets with 0.5 to 2 millimeters thickness. Type number 3 can penetrate up to 6 millimeters, and type number 4 up to 12.5 millimeters of steel. Minimum penetration torque for size number 8 is approximately 2.5 Newton-meters. Maximum final tightening torque should not exceed 8 Newton-meters to prevent screw fracture during installation.You can order and buy pan head self drillinf screw from Iran by contacting us through whatsaap and email.
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