QingDao Altak Trading Co.,Ltd

Sockets

Button Head Socket Cap Screws

Nominal Size	D		H		X	S		K	F		L
	Head Diameter		Head Height		Head Side Height	Hexagon Socket Size		Key Engage ment	Fillet Extension		Max Standard Length
	Max	Min	Max	Min	Ref	Nom		Min	Max	Min	Nom
4 5 6 8	0.213 0.238 0.262 0.312	0.201 0.226 0.250 0.298	0.059 0.066 0.073 0.087	0.051 0.055 0.063 0.077	0.015 0.015 0.015 0.015	1/16 5/64 5/64 3/32	0.062 0.078 0.078 0.094	0.035 0.044 0.044 0.052	0.010 0.010 0.010 0.015	0.005 0.005 0.005 0.010	0.50 0.50 0.63 0.75
10 1/4 5/16 3/8	0.361 0.437 0.547 0.656	0.347 0.419 0.527 0.636	0.101 0.132 0.166 0.199	0.091 0.122 0.152 0.185	0.020 0.031 0.031 0.031	1/8 5/32 3/16 7/32	0.125 0.156 0.188 0.219	0.070 0.087 0.105 0.122	0.015 0.020 0.020 0.020	0.010 0.015 0.015 0.015	1.00 1.00 1.00 1.25
1/2 5/8	0.875 1.000	0.851 0.970	0.265 0.331	0.245 0.311	0.046 0.062	5/16 3/8	0.312 0.375	0.175 0.210	0.030 0.030	0.020 0.020	2.00 2.00

Flat Head Socket Cap Screws

Nominal Size	B		D		H		S	K	F
	Body Diameter		Head Diameter		Head Height		Hexagon Socket Size	Key Engage- ment	Fillet Extension Above 0
	Body Diameter		Theo- retical Sharp Max	Abs Min	Refer- ence	Flush- ness Toler- ance	Hexagon Socket Size	Key Engage- ment	Fillet Extension Above 0
	Max	Min	Theo- retical Sharp Max	Abs Min	Refer- ence	Flush- ness Toler- ance	Nom	Min	Max
4 5 6 8	0.1120 0.1250 0.1380 0.1640	0.1075 0.1202 0.1329 0.1585	0.255 0.281 0.307 0.359	0.218 0.240 0.263 0.311	0.083 0.090 0.097 0.112	0.011 0.012 0.013 0.014	1/16 5/64 5/64 3/32	0.055 0.061 0.066 0.076	0.012 0.014 0.015 0.015
10 1/4 5/16 3/8	0.1900 0.2500 0.3125 0.3750	0.1840 0.2435 0.3053 0.3678	0.411 0.531 0.656 0.781	0.359 0.480 0.600 0.720	0.127 0.161 0.198 0.234	0.015 0.016 0.017 0.018	1/8 5/32 3/16 7/32	0.087 0.111 0.135 0.159	0.015 0.015 0.015 0.015
7/16 1/2 5/8 3/4	0.4375 0.5000 0.6250 0.7500	0.4294 0.4919 0.6163 0.7406	0.844 0.938 1.188 1.438	0.781 0.872 1.112 1.355	0.234 0.251 0.324 0.396	0.018 0.018 0.022 0.024	1/4 5/16 3/8 1/2	0.159 0.172 0.220 0.220	0.015 0.015 0.015 0.015

Socket Head Cap Screws

Nominal
Size or Basic Screw Diameter

Body Diameter

Head Diameter

Head Height

Head Side Height

Chamfer or
Radius

Hexagon Socket Size

Key Engage-
ment

Wall Thick-
ness

Max

Min

Max

Min

Max

Min

Max

Nom

Min

4	.1120
5	.1250
6	.1380
8	.1640
10	.1900
1/4	.2500
5/16	.3125
3/8	.3750

.1120
.1250
.1380
.1640
.1900
.2500
.3125
.3750

.1075
.1202
.1329
.1585
.1840
.2435
.3053
.3678

.183
.205
.226
.270
.312
.375
.469
.562

.176
.198
.218
.262
.303
.365
.457
.550

.112
.125
.138
.164
.190
.250
.312
.375

.108
.121
.134
.159
.185
.244
.306
.368

.101
.112
.124
.148
.171
.225
.281
.337

.005
.005
.005
.005
.005
.008
.008
.008

3/32
3/32
7/64
9/64
5/32
3/16
1/4
5/16

.094
.094
.109
.141
.156
.188
.250
.312

.051
.057
.064
.077
.090
.120
.151
.182

.038
.043
.047
.056
.065
.095
.119
.143

Low Head Socket Cap Screws

Nominal Size	B	D		H		S	K	F
	Basic Screw Diameter	Head Diameter		Head Height		Socket Size	Engage- ment	Fillet
	Basic Screw Diameter	Max	Min	Max	Min	Socket Size	Min	Max	Min
8 10 1/4 5/16	0.1640 0.1900 0.2500 0.3125	.270 .312 .375 .437	.265 .307 .369 .431	.082 .095 .125 .156	.079 .092 .121 .152	.0781 .0938 .1250 .1562	.060 .072 .094 .120	.012 .014 .014 .017	.007 .009 .009 .012
3/8 7/16 1/2	0.3750 0.4375 0.5000	.562 .625 .750	.556 .618 .743	.187 .218 .250	.182 .213 .244	.1875 .2188 .2500	.145 .166 .184	.020 .023 .026	.015 .018 .020

Hex Wrench

Nominal Key Size	F		C		S		L				R	K
	Hexagon Width Across Flats		Hexagon Width Across Corner		Length of Short Arm		Length of Long Arm				Radius of Bend	Chamfer
	Hexagon Width Across Flats		Hexagon Width Across Corner		Length of Short Arm		Short Series		Long Series		Radius of Bend	Chamfer
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min	Min	Max
0.028 0.035 0.050 1/16	0.0280 0.0350 0.0500 0.0625	0.0275 0.0345 0.0490 0.0615	0.0314 0.0393 0.0560 0.0701	0.0300 0.0378 0.0540 0.0680	0.312 0.438 0.625 0.656	0.125 0.250 0.438 0.469	1.312 1.312 1.750 1.844	1.125 1.125 1..562 1.656	2.688 2.766 2.938 3.094	2.500 2.578 2.750 2.906	0.062 0.062 0.062 0.062	0.003 0.004 0.006 0.008
5/64 3/32 7/64 1/8	0.0781 0.0937 0.1094 0.1250	0.0771 0.0927 0.1079 0.1235	0.0880 0.1058 0.1238 0.1418	0.0859 0.1035 0.1210 0.1390	0.703 0.750 0.797 0.844	0.516 0.562 0.609 0.656	1.969 2.094 2.219 2.344	1.781 1.906 2.031 2.156	3.281 3.469 3.656 3.844	3.094 3.281 3.469 3.656	0.078 0.094 0.109 0.125	0.008 0.009 0.014 0.015
9/64 5/32 3/16 7/32	0.1406 0.1562 0.1875 0.2187	0.1391 0.1547 0.1860 0.2172	0.1593 0.1774 0.2135 0.2490	0.1566 0.1745 0.2105 0.2460	0.891 0.938 1.031 1.125	0.703 0.750 0.844 0.938	2.469 2.594 2.844 3.094	2.281 2.406 2.656 2.906	4.031 4.219 4.594 4.969	3.844 4.031 4.406 4.781	0.141 0.156 0.188 0.219	0.016 0.016 0.022 0.024
1/4 5/16 3/8 7/16	0.2500 0.3125 0.3750 0.4375	0.2485 0.3110 0.3735 0.4355	0.2845 0.3570 0.4285 0.5005	0.2815 0.3531 0.4238 0.4944	1.219 1.344 1.469 1.594	1.031 1.156 1.281 1.406	3.344 3.844 4.344 4.844	3.156 3.656 4.156 4.656	5.344 6.094 6.844 7.594	5.156 5.906 6.656 7.406	0.250 0.312 0.375 0.438	0.030 0.032 0.044 0.047
1/2 9/16 5/8 3/4	0.5000 0.5625 0.6250 0.7500	0.4975 0.5600 0.6225 0.7470	0.5715 0.6420 0.7146 0.8580	0.5650 0.6356 0.7080 0.8512	1.719 1.844 1.969 2.219	1.531 1.656 1.781 2.031	5.344 5.844 6.344 7.344	5.156 5.656 6.156 7.156	8.344 9.094 9.844 11.344	8.156 8.906 9.656 11.156	0.500 0.562 0.625 0.750	0.050 0.053 0.055 0.070
7/8 1	0.8750 1.0000	0.8720 0.9970	1.0020 1.1470	0.9931 1.1350	2.469 2.719	2.281 2.531	8.344 9.344	8.156 9.156	12.844 14.344	12.656 14.156	0.875 1.000	0.076 0.081

Socket Pipe Plug Flush Seal

Nominal Size	O	Threads Per Inch	S	K	W	L		Tightening Torque (Inch-Lbs.)
	Nominal O.D.		Hex Socket Size	Key Engage- ment	Wall Thickness	Overall Length
	Nominal O.D.		Hex Socket Size	Min	Min	Max	Min
1/16 1/8 1/4 3/8	0.307 0.401 0.529 0.667	27 27 18 18	5/32 3/16 1/4 5/16	.140 .140 .218 .250	.052 .049 .045 .040	.250 .250 .406 .406	.235 .235 .391 .391	150 250 600 1200
1/2 3/4 1 1-1/4	0.830 1.041 1.302 1.647	14 14 11-1/2 11-1/2	3/8 9/16 5/8 3/4	.312 .312 .375 .437	.067 .054 .112 .102	.531 .531 .656 .656	.516 .516 .641 .641	1800 3000 4200 5400

Socket Pipe Plug Dry Seal

Nominal Size	O	Threads Per Inch	S	K	W	L		Tightening Torque (Inch-Lbs.)
	Nominal O.D.		Hex Socket Size	Key Engage- ment	Wall Thickness	Overall Length
	Nominal O.D.		Hex Socket Size	Min	Min	Max	Min
1/16 1/8 1/4 3/8 1/2	0.3120 0.4050 0.5400 0.6750 0.8400	27 27 18 18 14	5/32 3/16 1/4 5/16 3/8	.1400 .1400 .2180 .2500 .3120	.0620 .0620 .0730 .0840 .0950	.3240 .3240 .4570 .5200 .5820	.3000 .3000 .4170 .4800 .5420	150 250 600 1200 1800
3/4 1 1-1/4 1-1/2 2	1.0500 1.3150 1.6600 1.9000 2.3750	14 11-1/2 11-1/2 11-1/2 11-1/2	9/16 5/8 3/4 1 1	.3120 .3750 .4370 .4370 .4370	.1250 .1250 .1560 .1560 .1560	.6450 .7700 .8320 .8430 .9060	.6050 .7300 .7920 .7800 .8440	3000 4200 5400 6900 8500

Socket Shoulder Screws

Nominal Size	A		D		H		Z	S	K	E	F
	Shoulder Diameter		Head Diameter		Head Height		Head Side Height	Hexagon Socket Size	Key Engage- ment	Head Fillet Extension Above D	Head Fillet Radius
	Max	Min	Max	Min	Max	Min	Min	Nom	Min	Max	Min
1/4 5/16 3/8	0.2480 0.3105 0.3730	0.2460 0.3085 0.3710	0.375 0.438 0.562	0.357 0.419 0.543	0.188 0.219 0.250	0.177 0.209 0.240	0.157 0.183 0.209	1/8 5/32 3/16	0.094 0.117 0.141	0.014 0.017 0.020	0.009 0.012 0.015
1/2 5/8 3/4	0.4980 0.6230 0.7480	0.4960 0.6210 0.7460	0.750 0.875 1.000	0.729 0.853 0.977	0.312 0.375 0.500	0.302 0.365 0.490	0.262 0.315 0.421	1/4 5/16 3/8	0.188 0.234 0.281	0.026 0.032 0.039	0.020 0.024 0.030

Nominal Size	N	W	T		L		Q	C		B
	Shoulder Neck Diameter	Shoulder Neck Width	Nominal Thread Size	Threads Per In.	Thread Neck Diameter		Thread Neck	Thread Neck Fillet		Thread Length
	Min	Max	Nominal Thread Size	Threads Per In.	Max	Min	Max	Max	Min	Basic
1/4 5/16 3/8	0.227 0.289 0.352	0.093 0.093 0.093	10 1/4 5/16	24 20 18	0.142 0.193 0.249	0.133 0.182 0.237	0.083 0.100 0.111	0.023 0.028 0.031	0.017 0.022 0.025	0.375 0.438 0.500
1/2 5/8 3/4	0.477 0.602 0.727	0.093 0.093 0.093	3/8 1/2 5/8	16 13 11	0.304 0.414 0.521	0.291 0.397 0.502	0.125 0.154 0.182	0.035 0.042 0.051	0.029 0.036 0.045	0.625 0.750 0.875

Socket Set Screws

Nominal Size	S	K	F		0	D		H					A
	Hexagon Socket Size	Min Key Engage- ment	Cup & Flat Point Diameter		Oval Point Radius	Half Dog Point				Shortest Length To Which K Applies			Cone Pt. Angle 90° For These Lengths or Longer
	Hexagon Socket Size	Min Key Engage- ment	Cup & Flat Point Diameter		Oval Point Radius	Diameter		Length		Cup & Flat Points	90° Cone & Oval Pts.	Half Dog Point
	Nom	Min	Max	Min	Basic	Max	Min	Max	Min	Cup & Flat Points	90° Cone & Oval Pts.	Half Dog Point
4 5 6 8	0.050 1/16 1/16 5/64	0.070 0.080 0.080 0.090	0.061 0.067 0.074 0.087	0.051 0.057 0.064 0.076	0.084 0.094 0.104 0.123	0.075 0.083 0.092 0.109	0.070 0.078 0.087 0.103	0.030 0.033 0.038 0.043	0.026 0.027 0.032 0.037	0.19 0.19 0.19 0.19	0.19 0.19 0.25 0.25	0.19 0.19 0.19 0.25	0.19 0.19 0.19 0.25
10 1/4 5/16 3/8	3/32 1/8 5/32 3/16	0.100 0.125 0.156 0.188	0.102 0.132 0.172 0.212	0.088 0.118 0.156 0.194	0.142 0.188 0.234 0.281	0.127 0.156 0.203 0.250	0.120 0.149 0.195 0.241	0.049 0.067 0.082 0.099	0.041 0.059 0.074 0.089	0.19 0.25 0.31 0.38	0.25 0.31 0.44 0.44	0.25 0.31 0.38 0.44	0.25 0.31 0.38 0.44
7/16 1/2 5/8 3/4	7/32 1/4 5/16 3/8	0.219 0.250 0.312 0.375	0.252 0.291 0.371 0.450	0.232 0.270 0.347 0.425	0.328 0.375 0.469 0.562	0.297 0.344 0.469 0.562	0.287 0.334 0.456 0.549	0.114 0.130 0.164 0.196	0.104 0.120 0.148 0.180	0.44 0.50 0.63 0.75	0.63 0.63 0.88 1.00	0.50 0.63 0.88 1.00	0.50 0.57 0.75 0.88
7/8 1	1/2 9/16	0.500 0.562	0.530 0.609	0.502 0.579	0.656 0.750	0.656 0.750	0.642 0.734	0.227 0.260	0.211 0.240	0.88 1.00	1.00 1.25	1.00 1.25	1.00 1.13

Statistic：