DATA

INCHES TO DECIMAL

INCHES	DECIMAL
1/32	0.0312
1/16	0.0625
3/32	0.0937
1/8	0.1250
5/32	0.1562
3/16	0.1875
7/32	0.2187
1/4	0.250

INCHES	DECIMAL
9/32	0.2812
5/16	0.3120
11/32	0.3437
3/8	0.3750
13/32	0.4062
7/16	0.4375
15/32	0.4687
1/2	0.5000

INCHES	DECIMAL
17/32	0.5312
9/16	0.5625
19/32	0.5937
5/8	0.6250
21/32	0.6562
11/16	0.6870
23/32	0.7187
3/4	0.7500

INCHES	DECIMAL
25/32	0.7812
13/16	0.8125
27/32	0.8437
7/8	0.8750
29/32	0.9062
15/16	0.9375
31/32	0.9687
1	1.0000

GAUGES TO DECIMAL

GAUGES	DECIMAL
3	0.239
4	0.224
5	0.209
6	0.194
7	0.179
8	0.164
9	0.150
10	0.135
11	0.120

GAUGES	DECIMAL
12	0.105
13	0.090
14	0.075
15	0.067
16	0.060
17	0.054
18	0.048
19	0.042
20	0.036

GAUGES	DECIMAL
21	0.033
22	0.030
23	0.027
24	0.024
25	0.021
26	0.018
27	0.016
28	0.015
29	0.014

GAUGES	DECIMAL
30	0.0120
31	0.0105
32	0.0097
33	0.0090
34	0.0082
35	0.0075
36	0.0067
37	0.0064
38	0.0060

MATERIAL THICKNESS GUIDELINES FOR
SELF-DRILLING SCREWS

Point of Screw	Screw Size Dia		0.050 I	0.100 I		0.150 I	0.200 I	0.250 I	0.300 I	0.350 I	0.400 I	0.450 I	0.500 I	Drill Speed RPM
#2	6	0.035 - 0.090												2500
	8	0.035 - 0.104												2500
	10	0.035 - 0.110												2250
	1/4	0.035 - 0.176												2250
#3	10	0.035 - 0.176												2250
	12				0.110 - 0.210									2000
	1/4				0.110 - 0.230									1750
#4	12						0.187 - 0.312							1500
#5	12						0.187 - 0.500							1500

Performance may vary in certain applications. Drill speeds are only recommendations.
The above graph is intended as a guide and does not constitute a warranty of any type.