A
内径范围 (标准钻头尺寸) |
B
主体外径 |
C
长度
(头下) |
ANSI标识
型号 H |
价格
代码** |
F & G
沉头
尺寸 |
小数尺寸 |
件号,字母,
以分数表示的尺寸+ |
公称尺寸 |
磨前尺寸 |
磨后尺寸* |
磨后尺寸 |
.1250
to
.1935 |
#30 to #10
1/8 to 3/16 |
5/16 |
.3141
.3138 |
1/4
5/16
3/8
1/2
5/8
3/4
1
1-3/8
1-3/4 |
H-20-4
H-20-5
H-20-6
H-20-8
H-20-10
H-20-12
H-20-16
H-20-22
H-20-28 |
122
125
128
129
130
132
144
193
228 |
F
27/64
G
1/8 |
.1935
to
.2280 |
#10 to #1
13/64 and 7/32 |
3/8 |
.3766
.3763 |
1/4
3/8
1/2
3/4
1 |
H-24-4
H-24-6
H-24-8
H-24-12
H-24-16 |
118
124
126
129
139 |
F
1/2
G
3/32 |
.1875
To
.2570 |
#12 to #1
“A” to “F”
3/16 to 1/4 |
13/32 |
.4078
.4075 |
1/4
5/16
3/8
1/2
3/4
1
1-3/8
1-3/4 |
H-26-4
H-26-5
H-26-6
H-26-8
H-26-12
H-26-16
H-26-22
H-26-28 |
119
120
124
126
128
129
148
166 |
F
1/2
G
5/32 |
.2344
.2500
.2570
.2656
.2812 |
15/64
1/4
“F”
17/64
9/32 |
7/16 |
.4392
.4389 |
1/4
3/8
1/2
5/8
3/4
1 |
H-28-4
H-28-6
H-28-8
H-28-10
H-28-12
H-28-16 |
119
124
126
128
129
139 |
F
9/16
G
3/32 |
.1875
to
.3160 |
#12 to #1
“A” to “O”
3/16 to 5/16 |
1/2 |
.5017
.5014 |
1/4
5/16
3/8
1/2
3/4
1
1-3/8
1-3/4 |
H-32-4
H-32-5
H-32-6
H-32-8
H-32-12
H-32-16
H-32-22
H-32-28 |
118
120
124
126
128
138
148
166 |
F
39/64
G
7/32 |
.3020
to
.3438 |
“N” to “R”
5/16 to 11/32 |
9/16 |
.5642
.5639 |
3/8
1/2
5/8
3/4
1 |
H-36-6
H-36-8
H-36-10
H-36-12
H-36-16 |
122
122
123
124
128 |
F
11/16
G
3/32 |
+ 内径尺寸以分数表示, 为1/64英寸的倍数 (除非另有指明).
工作机会 订购流程 
（一）
