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Heavy Hex Screws [Table 7]

ASME B 18.2.1 (T7) - 2010

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^*Models with different eras.

Screw Thread
d

3/8

1/2

5/8

3/4

7/8

1-1/8

1-1/4

1-3/8

1-1/2

1-5/8

1-3/4

1-7/8

2-1/4

d_s	max
d_s	min
s	max
s	min
e	max
e	min
k	max
k	min
k_w	min
b	L≤6
b	L＞6

0.375	0.5	0.625	0.75	0.875	1	1.125	1.25	1.375	1.5	1.625	1.75	1.875	2	2.25
0.36	0.482	0.605	0.729	0.852	0.976	1.098	1.223	1.345	1.47	1.591	1.716	1.839	1.964	2.214
0.688	0.875	1.062	1.25	1.438	1.625	1.812	2	2.188	2.375	2.562	2.75	2.938	3.125	3.5
0.669	0.85	1.031	1.212	1.394	1.575	1.756	1.938	2.119	2.3	2.481	2.662	2.844	3.025	3.388
0.794	1.01	1.227	1.443	1.66	1.876	2.093	2.309	2.526	2.742	2.959	3.175	3.392	3.608	4.041
0.763	0.969	1.175	1.383	1.589	1.796	2.002	2.209	2.416	2.622	2.829	3.035	3.242	3.449	3.862
0.243	0.323	0.403	0.483	0.563	0.627	0.718	0.813	0.878	0.974	1.038	1.134	1.198	1.263	1.423
0.226	0.302	0.378	0.455	0.531	0.591	0.658	0.749	0.81	0.902	0.962	1.054	1.114	1.175	1.327
0.160	0.215	0.269	0.324	0.378	0.416	0.461	0.530	0.569	0.640	0.694	0.748	0.802	0.825	0.933
1	1.25	1.5	1.75	2	2.25	2.5	2.75	3	3.25	3.5	3.75	4	4.25	-
1.25	1.5	1.75	2	2.25	2.5	2.75	3	3.25	3.5	3.75	4	4.25	4.5	5

Screw Thread
d

2-1/2

2-3/4

3-1/4

3-1/2

3-3/4

4-1/4

4-1/2

4-3/4

5-1/4

5-1/2

5-3/4

d_s	max
d_s	min
s	max
s	min
e	max
e	min
k	max
k	min
k_w	min
b	L≤6
b	L＞6

2.5	2.75	3	3.25	3.5	3.75	4	4.25	4.5	4.75	5	5.25	5.5	5.75	6
2.461	2.711	2.961	3.21	3.461	3.7109	3.9609	4.2228	4.4727	4.7227	4.9726	5.2226	5.4726	5.7225	5.9725
3.875	4.25	4.625	5	5.375	5.75	6.125	6.5	6.875	7.25	7.625	8	8.375	8.75	9.125
3.75	4.112	4.475	4.838	5.2	5.562	5.925	6.288	6.65	7.012	7.375	7.738	8.1	8.462	8.825
4.474	4.907	5.34	5.774	6.207	6.64	7.073	7.506	7.939	8.372	8.805	9.238	9.671	10.104	10.537
4.275	4.688	5.102	5.515	5.928	6.341	6.755	7.168	7.581	7.994	8.408	8.821	9.234	9.647	10.060
1.583	1.744	1.935	2.126	2.256	2.447	2.576	2.768	2.896	3.088	3.217	3.408	3.538	3.729	3.858
1.479	1.632	1.815	1.998	2.12	2.303	2.424	2.608	2.728	2.912	3.033	3.216	3.338	3.521	3.642
1.042	1.151	1.290	1.399	1.484	1.612	1.697	1.826	1.910	2.038	2.123	2.251	2.337	2.465	2.549
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
5.5	6	6.5	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	12.5

Alternative history

ASME/ANSI B 18.2.1T5 - 1981 ASME B 18.2.1T6 - 1996 ASME B 18.2.1T7 - 2010 ASME B 18.2.1T7 - 2012

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