mech-tools-dat
Socket Wrench Drive
Common Socket Wrench Drive Sizes:
| Name | Drive Size | Square Drive (mm) | Typical Use Cases | CN |
|---|---|---|---|---|
| Small | 1/4" drive | 6.35 mm | Electronics, precision work, small screws | 方头 小飞 |
| Medium | 3/8" drive | 9.5 mm | Household use, light automotive repair | |
| Large | 1/2" drive | 12.7 mm (aka 12.5) | Automotive, heavy torque applications | 大飞 |
🔧 Hex Bolt Screwdriver Size Categorization
1. By Tip Size (Across Flats)
The most important measurement is the distance across the flat sides of the hex tip.
🧮 Metric Sizes (in millimeters)
1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, etc.
📏 Imperial Sizes (SAE, in inches)
1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 1/4", etc.
🔹 These sizes must match the hex socket of the bolt exactly.