
Oxide
ow carbon steels
Product features How to use IHT
both through hole and blind hole. size by using drills (note: For drill sizes, refer to drill sizes
| Through hole = 5 thread type | Blind hole = 2 thread type | When hand tapping, always use | Machine tapping with drilling |
| tap wrench | machine |
■Table for bored and drilled hole sizes : Blister Pack
unit mm
| Size | Minor Minimum | diameter of internal thre Maximum | ad size tolerance | Drill size Th enga | read ement |
| tolerance | 6H(2nd class) | 7H(3rd class) | |||
| M3×0.5 | 2.459 | 2.599 | 2.639 | 2.6(2.5) 74% | (92%) |
| M4×0.7 | 3.242 | 3.422 | 3.466 | 3.4(3.3) 79% | (92%) |
| M5×0.8 | 4.134 | 4.344 | 4.384 | 4.3(4.2) 81% | (92%) |
| M6×1 | 4.917 | 5.153 | 5.217 | 5.1(5.0) 83% | (92%) |
| M8×1.25 | 6.647 | 6.912 | 6.982 | 6.9(6.8) 91% | (89%) |
| M10×1.5 | 8.376 | 8.676 | 8.751 | 8.6(8.5) 86% | (92%) |
fer
note1) Recommended drill sizes shown in this table are for internal threads of 7H class(3rd class), and are selected from the standard drills available in the market. note2) Drill sizes shown in brackets in this table are for such case as the drilling has oversize cutting tendency or for internal threads of 6H class(2nd class).
●For deep hole tappings, please use shank adjusters.