Torx Screw Size Guide: Complete T6-T55 Specification Chart

Torx screw head sizes range from T6 to T55 with over 20 specifications. Correct selection is crucial for assembly quality.

Torx Size Chart:

Size	Point-to-Point (mm)	Compatible Screw	Typical Application
T6	1.70	M1.4-M1.6	Eyeglasses, precision instruments
T7	1.99	M1.6-M2	Watches, small electronics
T8	2.31	M2-M2.5	Mobile phones, digital cameras
T9	2.50	M2.5-M3	Laptops, hard drives
T10	2.74	M3	Electronics, home appliances
T15	3.27	M3.5-M4	Automotive parts, appliances
T20	3.86	M4-M5	Motorcycles, machinery
T25	4.43	M5-M6	Automotive engines, industrial equipment
T27	4.93	M6	Heavy machinery
T30	5.52	M7-M8	Construction structures, bridges
T40	6.65	M10	Large equipment, ships
T45	7.83	M12	Engineering machinery
T50	8.83	M14	Heavy equipment
T55	9.91	M16+	Special industrial applications

JiaLi Hardware provides full-size torx screws with custom specifications support.