Refrence No: 20.18
· Made of high quality polished steel.
· Each and every leaf is properly marked with size.
· Packed in attractive PVC pouch.
· Used to check the threads of the screws.
|
Ref. No. |
TPI Range |
No of Leaves |
Thread Type |
|
20.18 |
4-42 |
31 |
American National UNC/UNF - 60 |
|
20.18A |
4-84 |
52 |
American National UNC/UNF - 60 |
|
20.18B |
4-42 &0.25 to 6.0 |
31+24=55 |
Combination of American National 60 and Metric 60 threads. |
|
20.18C |
0.25 to 2.5mm |
28 |
International Metric Standard 60 |
|
20.18D |
0.25 to 6.0mm |
24 |
International Metric Standard 60 |
|
20.18E |
0.4 to 7.0mm |
20 |
International Metric Standard 60 |
|
20.18F |
4-62 & 0.25 to 6.0 |
28+24=52 |
Combination of American National 55 and Metric 60 |
|
20.18G |
4-62 G |
28 |
Whitworth Standard 55 |
|
20.18H |
0 to 10 BA |
12 |
British Association - 47.5 |
