ONE COMPLETE CHART
We all have a mix of wrenches in our tool boxes. Some of us have a lot of SAE, others have a full range of metric and most of us have a balanced mix of both.
Whatever your setup, our wrench conversion chart will tell you the best fitting standard or metric wrench to use for any given bolt.
STANDARD / METRIC WRENCH CONVERSION CHART
| BOLT DIAMETER | STANDARD | METRIC |
|
1/8" |
5/16" |
8mm |
|
3/16" |
3/8" |
10mm |
|
1/4" |
7/16" |
11mm |
|
5/16" |
1/2" |
13mm |
|
3/8" |
9/16" |
14mm |
|
7/16" |
5/8" |
16mm |
|
1/2" |
3/4" |
19mm |
|
9/16" |
13/16" |
21mm |
|
- |
7/8" |
22mm |
|
5/8" |
15/16" |
24mm |
|
- |
1" |
25mm |
|
3/4" |
1-1/8" |
29mm |
|
- |
1-1/4" |
32mm |
|
7/8" |
1-5/16" |
34mm |
|
- |
1-3/8" |
35mm |
|
1" |
1-1/2" |
38mm |
|
- |
1-5/8" |
41mm |
|
1-1/8" |
1-11/16" |
43mm |
|
- |
1-3/4" |
45mm |
|
1-1/4" |
1-7/8" |
48mm |
|
1-3/8" |
2" |
51mm |
|
1-1/2" |
2-1/4" |
57mm |
|
1-5/8" |
2-1/2" |
64mm |
|
1-3/4" |
2-5/8" |
67mm |
|
- |
2-3/4" |
70mm |
|
1-7/8" |
2-15/16" |
75mm |
|
- |
3" |
76mm |
|
2" |
3-1/8" |
80mm |
|
- |
3-1/4" |
83mm |
|
2-1/4" |
3-1/2" |
89mm |
|
- |
3-3/4" |
95mm |
|
2-1/2" |
3-7/8" |
99mm |
|
- |
4" |
102mm |
|
2-3/4" |
4-1/4" |
108mm |
|
- |
4-1/2" |
114mm |
|
3" |
4-5/8" |
118mm |
|
3-1/4" |
5" |
127mm |
|
3-1/2" |
5-3/8" |
137mm |
|
- |
5-1/2" |
140mm |
|
3-3/4" |
5-3/4" |
146mm |
|
- |
6" |
152mm |
|
- |
6-1/2" |
165mm |
|
- |
7" |
178mm |
3/8" DRIVE ELECTRIC RATCHET SET
Maximum high torque power of 33 ft-lbs with button for superior variable fastening of 230 RPM +/-10% for a wide range of fastening applications.
Forward and reverse lever for tightening and loosening with low profile angled head, LED light for easy use in confined spaces and durable metal and plastic construction with soft grip for increased comfort.
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We all have a mix of wrenches in our tool boxes. Some of us have a lot of SAE, others have a full range of metric and most of us have a balanced mix of both.
Whatever your setup, our wrench conversion chart will tell you the best fitting standard or metric wrench to use for any given bolt.
| BOLT DIAMETER | STANDARD | METRIC |
|
1/8" |
5/16" |
8mm |
|
3/16" |
3/8" |
10mm |
|
1/4" |
7/16" |
11mm |
|
5/16" |
1/2" |
13mm |
|
3/8" |
9/16" |
14mm |
|
7/16" |
5/8" |
16mm |
|
1/2" |
3/4" |
19mm |
|
9/16" |
13/16" |
21mm |
|
- |
7/8" |
22mm |
|
5/8" |
15/16" |
24mm |
|
- |
1" |
25mm |
|
3/4" |
1-1/8" |
29mm |
|
- |
1-1/4" |
32mm |
|
7/8" |
1-5/16" |
34mm |
|
- |
1-3/8" |
35mm |
|
1" |
1-1/2" |
38mm |
|
- |
1-5/8" |
41mm |
|
1-1/8" |
1-11/16" |
43mm |
|
- |
1-3/4" |
45mm |
|
1-1/4" |
1-7/8" |
48mm |
|
1-3/8" |
2" |
51mm |
|
1-1/2" |
2-1/4" |
57mm |
|
1-5/8" |
2-1/2" |
64mm |
|
1-3/4" |
2-5/8" |
67mm |
|
- |
2-3/4" |
70mm |
|
1-7/8" |
2-15/16" |
75mm |
|
- |
3" |
76mm |
|
2" |
3-1/8" |
80mm |
|
- |
3-1/4" |
83mm |
|
2-1/4" |
3-1/2" |
89mm |
|
- |
3-3/4" |
95mm |
|
2-1/2" |
3-7/8" |
99mm |
|
- |
4" |
102mm |
|
2-3/4" |
4-1/4" |
108mm |
|
- |
4-1/2" |
114mm |
|
3" |
4-5/8" |
118mm |
|
3-1/4" |
5" |
127mm |
|
3-1/2" |
5-3/8" |
137mm |
|
- |
5-1/2" |
140mm |
|
3-3/4" |
5-3/4" |
146mm |
|
- |
6" |
152mm |
|
- |
6-1/2" |
165mm |
|
- |
7" |
178mm |
