TABLES, METRIC CONVERSIONS AND SPEED CALCULATOR

• TAP AND DRILL SIZES
• PIPE TAP AND DRILL SIZE
• METRIC TAP AND DRILL SIZE

• SHEET METAL THICKNESS
• WIRE GAUGE

TAP SIZE	TAP DRILL & DECIMAL EQU.	BODY DRILL & DECIMAL EQU.
1-56	54....(0.0550)	48....(0.0760)
1-64	53....(0.0595)	48....(0.0760)
1-72	53....(0.0595)	48....(0.0760)
2-56	50....(0.0700)	43....(0.0890)
2-64	50....(0.0700)	43....(0.0890)
3-48	47....(0.0785)	37....(0.1040)
3-56	45....(0.0820)	37....(0.1040)
4-36	44....(0.0860)	32....(0.1160)
4-40	43....(0.0890)	32....(0.1160)
4-48	42....(0.0935)	32....(0.1160)
5-40	38....(0.1015)	30....(0.1285)
5-44	37....(0.1040)	30....(0.1285)
6-32	36....(0.1065)	27....(0.1440)
6-36	34....(0.1110)	27....(0.1440)
6-40	33....(0.1130)	27....(0.1440)
8-32	29....(0.1360)	18....(0.1695)
8-36	29....(0.1360)	18....(0.1695)
10-24	25....(0.1495)	9....(0.1960)
10-32	21....(0.1590)	9....(0.1960)
12-24	16....(0.1770)	2....(0.2210)
12-28	14....(0.1820)	2....(0.2210)
14-20	10....(0.1935)	D....(0.2460)
14-24	7....(0.2010)	D....(0.2460)
1/4-20	7....(0.2010)	F....(0.2570)
1/4-28	3....(0.2130)	F....(0.2570)
5/16-18	F....(0.2570)	P....(0.3230)
5/16-24	I....(0.2720)	P....(0.3230)
3/8-16	5/16....(0.3125)	W....(0.3860)
3/8-24	Q....(0.3320)	W....(0.3860)
7/16-14	U....(0.3680)	29/64....(0.4531)
7/16-20	25/64....(0.3906)	29/64....(0.4531)
1/2-13	27/64....(0.4219)	33/64....(0.5156)
1/2-20	29/64....(0.4531)	33/64....(0.5156)
PIPE TAP SIZE	THREADS PER INCH	TAP DRILL & DECIMAL EQU.
1/8	27	R....(0.3390)
1/4	18	7/16....(0.3680)
3/8	18	37/64....(0.5781)
1/2	14	23/32....(0.7187)
3/4	14	59/64....(0.9219)
1	11-1/2	1-5/32....(1.1562)
1-1/4	11-1/2	1-1/2....(1.5000)
1-1/2	11-1/2	1-47/64....(1.7344)
2	11-1/2	2-7/32....(2.2187)
2-1/2	8	2-5/8....(2.6250)
3	8	3-1/4....(3.2500)
3-1/2	8	3-3/4....(3.7500)
4	8	4-1/4....(4.1250)
METRIC TAP SIZE	METRIC DRILL SIZE	DECIMAL EQUIVALENT
M1.6x.35	1.25mm	.0492
M2.5x.45	No.48	.0810
M3x.5	2.50mm	.0984
M3.5x.6	2.90mm	.1142
M4x.7	3.30mm	.1299
M4.5x.75	No.25	.1495
M5x.8	No.19	.1660
M6x1	5.00mm	.1969
M8x1.25	6.80mm	.2677
M10x1.5	8.50mm	.3346
M12x1.75	Y	.4040
M14x2	12.00mm	.4724
M16x2	14.00mm	.5512
M18x2	15.50mm	.6102
M20x2.5	17.50mm	.6890

GAUGE	THICKNESS
14	.064
16	.050
18	.040
20	.031
24	.020
26	.015
28	.012
30	.010
GAUGE	WIRE SIZE
4/0	.4600
3/0	.4096
2/0	.3648
1/0	.3249
1	.2893
2	.2576
3	.2294
4	.2043
5	.1819
6	.1620
7	.1443
8	.1285
9	.1144
10	.1019
11	.0907
12	.0808
13	.0719
14	.0640
15	.0571
16	.0508
17	.0452
18	.0403
19	.0359
20	.0319
21	.0284
22	.0253
23	.0225
24	.0201
25	.0179
26	.0159
27	.0142
28	.0126
29	.0112
30	.0100
31	.0089
32	.0079
33	.0070
34	.0063
35	.0056
36	.0050
37	.0044
38	.0039
39	.0035
40	.0031
41	.0028
42	.0025
43	.0022
44	.0020
45	.0018
46	.0016
47	.0014
48	.0012
49	.0011
50	.0010

MATERIAL NAME	HARDNESS ROCKWELL	Y=YIELD T=TENSILE STRENGTH PSI	MACHIN- ABILITY	MELTING POINT
ALUMINUM 2024	B69	Y 47,000	Fair	1180 F
ALUMINUM 6061	.	Y 37-40K	Good	1080 F
ALUMINUM 6262	B69	Y 55,000	Exccellent	1080 F
ALUMINUM 7075	B81	Y 73,000	Good	890 F
CAST IRON (Gray)	B100	T 40,000	.	2050 F
CAST DUCTILE IRON	B98.2	T 80,000	.	2050 F
STEEL 1018 (Low carbon)	B72	Y 55,000	Good	2800 F
STEEL 12L14 (Low carbon)	B75-90	Y 60-80 K	Excellent	2800 F
STEEL 1045 (Medium carbon)	B90	Y 77,000	65%	2800 F
STEEL 1144 (Medium carbon)	B97	Y 95,000	Very Good	2750 F
STEEL Alloy 8620 (Medium carbon)	B85-97	Y 55-95K	75%	2800 F
TOOL STEEL Grade A2	B98-99	Y 50-108K	Fair	2300-2600 F
TOOL STEEL Grade A6	B93-97	Y 110,000	Fair	2300-2600 F
TOOL STEEL Grade A11	C26-29	Y 124,000	45%	2390 F
TOOL STEEL Grade D2	C62-65	Y 60-111K	Fair	2300 F
STAINLESS STEEL 18-8	B80.8-90.7	Y 30K-45K	.	.
STAINLESS STEEL 304	B80.8-90.7	Y 30K-45K	Good	.
STAINLESS STEEL 316	B58-99	Y 35-85K	Good	.
STAINLESS STEEL 321	B81	Y 35,000	Fair	.
STAINLESS STEEL 2205	C30.5	Y 65,000	.	.
STAINLESS STEEL 15-5 PH	C35.9	Y 145,000	.	.
STAINLESS STEEL 17-4 PH	C35.9	Y 145,000	.	.
BRASS ALLOY 260	B60-77	Y 52,000	30%	1750 F
BRASS ALLOY 360	B25-85	Y 44-52K	100%	1650 F
BRONZE ALLOY 316	B70	Y 57,000	80%	1900 F
BRONZE ALLOY 932	B65	Y 18,000	70%	1790 F