Threads and Threading - Sportpilot.info
Threads and Threading - Sportpilot.info
Threads and Threading - Sportpilot.info
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Table 2b. Limiting Dimensions of ANSI General Purpose Acme Single-Start Screw <strong>Threads</strong> ASME/ANSI B1.5-1988<br />
Nominal Diameter, D<br />
1 ⁄4<br />
5 ⁄16<br />
3 ⁄8<br />
7 ⁄16<br />
1 ⁄2<br />
5 ⁄8<br />
3 ⁄4<br />
7 ⁄8 1 1 1 ⁄8 1 1 ⁄ 4 1 3 ⁄ 8<br />
<strong>Threads</strong> per Inch a 16 14 12 12 10 8 6 6 5 5 5 4<br />
Limiting Diameters External <strong>Threads</strong><br />
Classes 2G, 3G, <strong>and</strong> 4G<br />
{ Max (D) 0.2500 0.3125 0.3750 0.4375 0.5000 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500 1.3750<br />
Major Diameter Min 0.2450 0.3075 0.3700 0.4325 0.4950 0.6188 0.7417 0.8667 0.9900 1.1150 1.2400 1.3625<br />
Classes 2G, 3G, <strong>and</strong> 4G<br />
Machinery's H<strong>and</strong>book 27th Edition<br />
Minor Diameter Max 0.1775 0.2311 0.2817 0.3442 0.3800 0.4800 0.5633 0.6883 0.7800 0.9050 1.0300 1.1050<br />
Class 2G, Minor Diameter Min 0.1618 0.2140 0.2632 0.3253 0.3594 0.4570 0.5372 0.6615 0.7509 0.8753 0.9998 1.0720<br />
Class 3G, Minor Diameter Min 0.1702 0.2231 0.2730 0.3354 0.3704 0.4693 0.5511 0.6758 0.7664 0.8912 1.0159 1.0896<br />
Class 4G, Minor Diameter Min 0.1722 0.2254 0.2755 0.3379 0.3731 0.4723 0.5546 0.6794 0.7703 0.8951 1.0199 1.0940<br />
Class 2G, Pitch Diameter {<br />
Max<br />
Min<br />
0.2148<br />
0.2043<br />
0.2728<br />
0.2614<br />
0.3284<br />
0.3161<br />
0.3909<br />
0.3783<br />
0.4443<br />
0.4306<br />
0.5562<br />
0.5408<br />
0.6598<br />
0.6424<br />
0.7842<br />
0.7663<br />
0.8920<br />
0.8726<br />
1.0165<br />
0.9967<br />
1.1411<br />
1.1210<br />
1.2406<br />
1.2188<br />
Class 3G, Pitch Diameter {<br />
Max<br />
Min<br />
0.2158<br />
0.2109<br />
0.2738<br />
0.2685<br />
0.3296<br />
0.3238<br />
0.3921<br />
0.3862<br />
0.4458<br />
0.4394<br />
0.5578<br />
0.5506<br />
0.6615<br />
0.6534<br />
0.7861<br />
0.7778<br />
0.8940<br />
0.8849<br />
1.0186<br />
1.0094<br />
1.1433<br />
1.1339<br />
1.2430<br />
1.2327<br />
Class 4G, Pitch Diameter {<br />
Max<br />
Min<br />
0.2168<br />
0.2133<br />
0.2748<br />
0.2710<br />
0.3309<br />
0.3268<br />
0.3934<br />
0.3892<br />
0.4472<br />
0.4426<br />
0.5593<br />
0.5542<br />
0.6632<br />
0.6574<br />
0.7880<br />
0.7820<br />
0.8960<br />
0.8895<br />
1.0208<br />
1.0142<br />
1.1455<br />
1.1388<br />
1.2453<br />
1.2380<br />
Internal <strong>Threads</strong><br />
Classes 2G, 3G, <strong>and</strong> 4G<br />
{ Min 0.2600 0.3225 0.3850 0.4475 0.5200 0.6450 0.7700 0.8950 1.0200 1.1450 1.2700 1.3950<br />
Major Diameter Max 0.2700 0.3325 0.3950 0.4575 0.5400 0.6650 0.7900 0.9150 1.0400 1.1650 1.2900 1.4150<br />
Classes 2G, 3G, <strong>and</strong> 4G<br />
{ Min 0.1875 0.2411 0.2917 0.3542 0.4000 0.5000 0.5833 0.7083 0.8000 0.9250 1.0500 1.1250<br />
Minor Diameter Max 0.1925 0.2461 0.2967 0.3592 0.4050 0.5062 0.5916 0.7166 0.8100 0.9350 1.0600 1.1375<br />
Class 2G, Pitch Diameter {<br />
Min<br />
Max<br />
0.2188<br />
0.2293<br />
0.2768<br />
0.2882<br />
0.3333<br />
0.3456<br />
0.3958<br />
0.4084<br />
0.4500<br />
0.4637<br />
0.5625<br />
0.5779<br />
0.6667<br />
0.6841<br />
0.7917<br />
0.8096<br />
0.9000<br />
0.9194<br />
1.0250<br />
1.0448<br />
1.1500<br />
1.1701<br />
1.2500<br />
1.2720<br />
Class 3G, Pitch Diameter {<br />
Min<br />
Max<br />
0.2188<br />
0.2237<br />
0.2768<br />
0.2821<br />
0.3333<br />
0.3391<br />
0.3958<br />
0.4017<br />
0.4500<br />
0.4564<br />
0.5625<br />
0.5697<br />
0.6667<br />
0.6748<br />
0.7917<br />
0.8000<br />
0.9000<br />
0.9091<br />
1.0250<br />
1.0342<br />
1.1500<br />
1.1594<br />
1.2500<br />
1.2603<br />
Class 4G, Pitch Diameter {<br />
Min<br />
Max<br />
0.2188<br />
0.2223<br />
0.2768<br />
0.2806<br />
0.3333<br />
0.3374<br />
0.3958<br />
0.4000<br />
0.4500<br />
0.4546<br />
0.5625<br />
0.5676<br />
0.6667<br />
0.6725<br />
0.7917<br />
0.7977<br />
0.9000<br />
0.9065<br />
1.0250<br />
1.0316<br />
1.1500<br />
1.1567<br />
1.2500<br />
1.2573<br />
Copyright 2004, Industrial Press, Inc., New York, NY<br />
ACME SCREW THREADS 1829