ASTM A307 A354

ASME B 18.2.1 - 2012

Hex Bolts

ASTM A307 / A354

Screw Thread
d

PP	UNC
	UNF
	8-UN
d_s	max
	min
s	max
	min
e	max
	min
k	max
	min
r	max
	min
b	L≤6
	L＞6

20	18	16	14	13	11	10	9	8	7	7	6	6
28	24	24	20	20	18	16	14	12	12	12	12	12
-	-	-	-	-	-	-	-	-	8	8	8	8
0.26	0.324	0.388	0.452	0.515	0.642	0.768	0.895	1.022	1.149	1.277	1.404	1.531
0.237	0.298	0.36	0.421	0.482	0.605	0.729	0.852	0.976	1.098	1.223	1.345	1.47
0.438	0.5	0.562	0.625	0.75	0.938	1.125	1.312	1.5	1.688	1.875	2.062	2.25
0.425	0.484	0.544	0.603	0.725	0.906	1.088	1.269	1.45	1.631	1.812	1.994	2.175
0.505	0.577	0.650	0.722	0.866	1.083	1.299	1.516	1.732	1.949	2.165	2.382	2.598
0.484	0.552	0.620	0.687	0.826	1.033	1.240	1.447	1.653	1.859	2.066	2.273	2.480
0.188	0.235	0.268	0.316	0.364	0.444	0.524	0.604	0.7	0.78	0.876	0.94	1.036
0.15	0.195	0.226	0.272	0.302	0.378	0.455	0.531	0.591	0.658	0.749	0.81	0.902
0.030	0.030	0.030	0.030	0.030	0.060	0.060	0.060	0.090	0.090	0.090	0.090	0.090
0.010	0.010	0.010	0.010	0.010	0.020	0.020	0.020	0.030	0.030	0.030	0.030	0.030
0.7500	0.8750	1.0000	1.1250	1.2500	1.5000	1.7500	2.0000	2.2500	2.5000	2.7500	3.0000	3.2500
1.0000	1.1250	1.2500	1.3750	1.5000	1.7500	2.0000	2.2500	2.5000	2.7500	3.0000	3.2500	3.5000

Screw Thread
d

PP	UNC
	UNF
	8-UN
d_s	max
	min
s	max
	min
e	max
	min
k	max
	min
r	max
	min
b	L≤6
	L＞6

-	5	-	4-1/2	4-1/2	4	4	4	4	4	4	4
-	-	-	-	-	-	-	-	-	-	-	-
8	8	8	8	8	8	8	8	8	8	8	8
1.658	1.785	1.912	2.039	2.305	2.559	2.827	3.081	3.335	3.589	3.858	4.111
1.591	1.716	1.839	1.964	2.214	2.461	2.711	2.961	3.21	3.461	3.726	3.975
2.438	2.625	2.812	3	3.375	3.75	4.125	4.5	4.875	5.25	5.625	6
2.356	2.538	2.719	2.9	3.262	3.625	3.988	4.35	4.712	5.075	5.437	5.8
2.815	3.031	3.248	3.464	3.897	4.330	4.763	5.196	5.629	6.062	6.495	6.928
2.616	2.893	3.099	3.306	3.719	4.133	4.546	4.959	5.372	5.786	6.198	6.612
1.116	1.196	1.276	1.388	1.548	1.708	1.869	2.06	2.251	2.38	2.572	2.764
0.978	1.054	1.13	1.175	1.327	1.479	1.632	1.815	1.936	2.057	2.241	2.424
0.090	0.120	0.120	0.120	0.19	0.190	0.190	0.190	0.190	0.190	0.190	0.190
0.030	0.040	0.040	0.040	0.06	0.060	0.060	0.060	0.060	0.060	0.060	0.060
3.5000	3.7500	4.0000	4.2500	4.75	5.2500	5.7500	6.2500	6.7500	7.2500	7.7500	8.2500
3.7500	4.0000	4.2500	4.5000	5.000	5.5000	6.0000	6.5000	7.0000	7.5000	8.0000	8.5000

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