ANSI B 18.2.1 Stainless steel hexagon head bolt

Category:Hexagon head bolt
Number of views:order
Release date:2025-05-17 16:32:52

Inquiry

Enquiry telephone：+8618151178581

Product overview
性能特点
技术参数
商品评价

Product name: ANSI B 18.2.1 Stainless steel hexagon head bolt

Executive standard: ANSI/ASME B18.2.1-UNC thread

ANSI/ASME B18.2.1 is a standard specification for hexagon head bolts jointly developed by the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME). The standard specifies the dimensions, tolerances, materials, properties and other requirements of hexagonal head bolts to ensure that the bolts can meet the needs of different applications. According to ANSI/ASME B18.2.1, the head of the hexagonal head American screw is an outer hexagonal head, designed for wrench rotation, easy tightening and removal. Due to the excellent corrosion resistance and high temperature resistance of stainless steel materials, stainless steel American-made outer hexagonal bolts are widely used in machinery manufacturing, petrochemical, Marine engineering and other industries.

Product material: SUS304, SUS316, SUS316L

Product grade: A2-70, B8, B8M, F593C, F593D, F593G, F593H

Product surface: stainless steel natural polishing and cleaning, stainless steel passivation, stainless steel sealing, baking paint, etc

Product diameter: 10#-32 teeth, /12#-32 teeth,1/4-28 teeth, 5/16-24 teeth, 3/8-24 teeth, 7/16-20 teeth, 1/2-20 teeth, 9/16-18 teeth, 5/8-18 teeth, 3/4-16 teeth, 7/8-14 teeth,1 ""-8 teeth, 1-1/8-12 teeth, 1-1/4-12 teeth,1 - 1/2-12 teeth, 1-5/8 - tooth, 3/4-1-12 of 12, 12 teeth, "" - 2-2 1/2 - tooth," "3-12 of 12, 3-1/2-12 teeth, 4" "- 12 teeth

Product length: 1/4 inch -40 inch length is available and customized

Product size

Size unit : inch

Thread size
d

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

d_s	max
d_s	min
s	Basic size
	max
	min
and	max
and	min
k	Basic size
	max
	min
k_w	min
b	L≤6
b	L＞6

0.25	0.3125	0.375	0.4375	0.5	0.5625	0.625	0.75	0.875	1
0.245	0.3065	0.369	0.4305	0.493	0.5545	0.617	0.741	0.866	0.99
7/16	1/2	9/16	5/8	3/4	13/16	15/16	1-1/8	1-5/16	1-1/2
0.438	0.5	0.562	0.625	0.75	0.812	0.938	1.125	1.312	1.5
0.428	0.489	0.551	0.612	0.736	0.798	0.922	1.1	1.285	1.469
0.505	0.577	0.65	0.722	0.866	0.938	1.083	1.299	1.516	1.732
0.488	0.557	0.628	0.698	0.84	0.91	1.051	1.254	1.465	1.675
5/32	13/64	15/64	9/32	5/16	23/64	25/64	15/32	35/64	39/64
0.163	0.211	0.243	0.291	0.323	0.371	0.403	0.483	0.563	0.627
0.15	0.195	0.226	0.272	0.302	0.348	0.378	0.455	0.531	0.591
0.106	0.14	0.16	0.195	0.215	0.25	0.269	0.324	0.378	0.416
0.75	0.875	1	1.125	1.25	1.375	1.5	1.75	2	2.25
1	1.125	1.25	1.375	1.5	1.625	1.75	2	2.25	2.5

Thread size
d

1-1/8

1-1/4

1-3/8

1-1/2

1-3/4

2-1/4

2-1/2

2-3/4

d_s	max
d_s	min
s	Basic size
	max
	min
and	max
and	min
k	Basic size
	max
	min
k_w	min
b	L≤6
b	L＞6

1.125	1.25	1.375	1.5	1.75	2	2.25	2.5	2.75	3
1.114	1.239	1.363	1.488	1.738	1.988	2.238	2.488	2.738	2.988
1-11/16	1-7/8	2-1/16	2-1/4	2-5/8	3	3-3/8	3-3/4	4-1/8	4-1/2
1.688	1.875	2.062	2.25	2.625	3	3.375	3.75	4.125	4.5
1.631	1.812	1.994	2.175	2.538	2.9	3.262	3.625	3.988	4.35
1.949	2.165	2.382	2.598	3.031	3.464	3.897	4.33	4.763	5.196
1.859	2.066	2.273	2.48	2.893	3.306	3.719	4.133	4.546	4.959
11/16	25/32	27/32	1-5/16	1-3/32	1-7/32	1-3/8	1-17/32	1-11/16	1-7/8
0.718	0.813	0.878	0.974	1.134	1.263	1.423	1.583	1.744	1.935
0.658	0.749	0.81	0.902	1.054	1.175	1.327	1.479	1.632	1.815
0.461	0.53	0.569	0.64	0.748	0.825	0.933	1.042	1.151	1.29
2.5	2.75	3	3.25	3.75	4.25	4.75	5.25	5.75	6.25
2.75	3	3.25	3.5	4	4.5	5	5.5	6	6.5