The Classification and Quality Standards of Self-tapping Laptop Screw

As a professional China screw manufacturer, you must be familiar with the classification and quality standards of self-tapping laptop screw. However, many friends still do not have many knowledge about it. Today, follow King-Tower Catherine to learn the classification and quality standards of self-tapping laptop screw.

1. Slot self-tapping screws

A. Slotted pan head tapping screw: ISO1481,GB/T5282,ASME B18.6.4. DIN standard do not have slot pan head self-drilling screw. It is instead by slotted cylinder head self-drilling screw: DIN7971.

B.Slotted countersunk head tapping screws: ISO1782,GB/T5283,DIN7972,ASME B18.6.4.

C. Slot oval head self-drilling screw: ISO1483,GB/T5284,DIN/T7973,ASME B18.6.4.

2. Philips self-tapping screws

A. Cross trough pan head self-drilling screw: ISO7049,GB/T845,DIN7981,ASME B18.6.4.

B. Philips countersunk head tapping screws: ISO7050,GB/T846,DIN7982,ASME B18.6.4.

C. Philips oval head self-drilling screw: ISO7051,GB/T847,DIN7983,ASME B18.6.4.

3.Hexagon head tapping screws, hexagon flange head tapping screws, hexagon washer head tapping screws.

A. Hexagon head tapping laptop screw: ISO1479,GB/T8285,DIN7976,ASME B18.6.4.

B. Hexagon flange head tapping screws: ISO10509,GB/T16824.2. There is no DIN、ASME at present.

C. Hexagon washer head tapping screws: ISO7053,GB/T16824.1,ASME B18.6.4. There is no DIN at present.

Above is the classification and quality standards of self-tapping laptop screw. I hope this article can be helpful to you.

About King-Tower

Dongguan King-Tower Hardware Co., Ltd is one of the largest enterprises to produce in China. China screw manufacturer choose King-Tower. Our company produces all kinds of sem screws, safety screws, Chiacgo screws, special screws, customized screws, plastic head screws, Lathe screws, and Professional screw, to meet various standard requests from different countries. All the equipment is introduced from the United States, Japan and Taiwan. Good equipment, consummate craft and strict management enable the quality of the products and service standard to reach the level of international market.

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