General Design Principles for DuPont Engineering Polymers - Module
General Design Principles for DuPont Engineering Polymers - Module
General Design Principles for DuPont Engineering Polymers - Module
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Table 10.01<br />
Self-Threading Screw Per<strong>for</strong>mance in Zytel ®<br />
69<br />
Type A Screw No.<br />
6 7 8 9 10 14<br />
Screw<br />
Ds mm 3.6 4 4.3 4.9 5.6 6.5<br />
in 0.141 0.158 0.168 0.194 0.221 0.254<br />
ds mm 2.6 2.9 3.1 3.4 4.1 4.7<br />
Hub<br />
in 0.096 0.108 0.116 0.126 0.155 0.178<br />
Dh mm 8.9 10 10.8 12.2 14 16.2<br />
in 0.348 0.394 0.425 0.480 0.550 0.640<br />
dh mm 2.9 3.3 3.5 4.1 4.7 5.5<br />
Pull-out Load*<br />
in 0.114 0.130 0.138 0.162 0.185 0.217<br />
Zytel ® 101 kg 225 325 385 430 510 640<br />
lb 495 715 848 947 1123 1409<br />
Zytel ® 70G 33 L kg 230 320 350 390 485 620<br />
Stripping Torque*<br />
lb 506 704 770 859 1068 1365<br />
Zytel ® 101 cm kg 16 25 36 50 70 100<br />
ft Ib 1.2 1.8 2.6 3.6 5.1 7.2<br />
Zytel ® 70G 33 L cm kg 25 35 48 63 80 100<br />
ft lb 1.8 2.5 3.5 4.6 5.8 7.2<br />
*Based on parts conditioned to equilibrium at 50% RH<br />
D s<br />
d s<br />
D h<br />
Table 10.02<br />
Self-Threading Screw Per<strong>for</strong>mance in Delrin ®<br />
Screw No. 6 7 8 10 12 14<br />
mm<br />
Ds in<br />
3.6<br />
0.141<br />
4<br />
0.158<br />
4.3<br />
0.168<br />
4.9<br />
0.194<br />
5.6<br />
0.221<br />
6.5<br />
0.254<br />
mm<br />
ds in<br />
2.6<br />
0.096<br />
2.9<br />
0.108<br />
3.1<br />
0.116<br />
3.4<br />
0.126<br />
4.1<br />
0.155<br />
4.7<br />
0.173<br />
mm<br />
Dh in<br />
8.9<br />
0.348<br />
10<br />
0.394<br />
10.8<br />
0.425<br />
12.2<br />
0.480<br />
14<br />
0.550<br />
16.2<br />
0.640<br />
-<br />
mm<br />
dh in<br />
2.9<br />
0.114<br />
3.3<br />
0.130<br />
3.5<br />
0.138<br />
4.1<br />
0.162<br />
4.7<br />
0.185<br />
5.5<br />
0.217<br />
Delrin ® 500 NC-10 N 3100 3800 4500 5250 6500 9000<br />
lb 682 838 991 1156 1431 1982<br />
Delrin ® 570 N 3050 3600 4250 4950 6000 8300<br />
lb 671 792 936 1090 1321 1828<br />
Delrin ® 500 NC-10 J 2.5 3.5 4.6 5.8 7.5 11.2<br />
ft Ib 1.8 2.5 3.3 4.2 5.4 8.1<br />
Delrin ® dh 570 J 2.5 3.5 4.7 6.2 8.2 12.0<br />
ft Ib 1.8 2.5 3.4 4.5 5.9 8.7