A193 B8M stainless steel full thread stud

Category:Full thread stud
Number of views:order
Release date:2025-04-14 15:10:20

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Product overview
性能特点
技术参数
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Product Name: A193 B8M stainless steel full thread stud

Implementation standard: ASME B 18.31.2

Product Overview: A193 B8M stainless steel full thread studs are stainless steel studs for high temperature or high pressure and other special purposes. B8M stainless steel full thread studs are better than B8 in acid corrosion resistance, so B8M is usually widely used in seawater equipment, chemicals, dyes, papermaking, oxalic acid, fertilizers and other production equipment. B8M studs are also divided into two grades, class and class 2. Cass2 (grade 2) can be used for bars, wires and finished fasteners. The material should be carbide solution treated, heated from room temperature, and kept at a temperature that can make chromium carbide enter the solution for a sufficient time, and then cooled at a temperature sufficient to prevent carbide precipitation. After these treatments, the material is strain hardened to achieve the required performance.

Product material: stainless steel

Product grade: A193 B8 full thread stud class 1 tensile strength ≥515, hardness ≤223HBW, class 2 tensile strength ≥760, hardness ≤321HBW

Product surface: black, blue-white zinc, colored zinc, black zinc, zinc-nickel alloy, hot-dip galvanizing, hot-dip galvanizing, gyromet, Dacromet, electrophoresis, Teflon, etc.

Product diameter: 1/4-20 teeth (1/4-28 teeth), 5/16-18 teeth (5/16-24 teeth), 3/8-16 teeth (3/8-24 teeth), 7/16-14 teeth (7/16-20), 1/2-13 teeth (1/2-20 teeth), 9/16-12 teeth (9/16-18 teeth), 5/8-11 teeth (5/8-18 teeth), 3/4-10 teeth (3/4-16 teeth), 7/8-9 teeth (7/8-14 teeth), 1"-8 teeth, 1-1/8-8 teeth, 1-1/4-8 teeth, 1-1/2-8 teeth, 1-5/8-8 teeth, 1-3/4-8 teeth, 2"-8 teeth, 2-1/2-8 teeth, 3"-8 teeth, 3-1/2-8 teeth, 4"-8 teeth

Product length: 1/4 inch - 50 inches length available for selection and customization

Product size

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Size unit: inch

Thread size
d

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1-1/8

1-1/4

1-3/8

d
PP	UNC
	UNF
	8UN
IN	Coarse tooth UNC	Minimum
		Maximum
	Fine tooth UNF	Minimum
		Maximum
	8UN	Minimum
		Maximum

0.2500	0.3125	0.3750	0.4375	0.5000	0.5625	0.6250	0.7500	0.8750	1.0000	1.1250	1.2500	1.3750
20	18	16	14	13	12	11	10	9	8	7	7	6
28	24	24	20	20	18	18	16	14	12	12	12	12
-	-	-	-	-	-	-	-	-	-	8	8	8
0.050	0.056	0.063	0.072	0.077	0.084	0.091	0.100	0.111	0.125	0.143	0.143	0.167
0.100	0.111	0.125	0.143	0.154	0.167	0.182	0.200	0.222	0.250	0.286	0.286	0.333
0.036	0.042	0.042	0.050	0.050	0.056	0.056	0.063	0.072	0.084	0.084	0.084	0.084
0.071	0.083	0.083	0.100	0.100	0.111	0.111	0.125	0.143	0.167	0.167	0.167	0.167
-	-	-	-	-	-	-	-	-	-	0.125	0.125	0.125
-	-	-	-	-	-	-	-	-	-	0.250	0.250	0.250

Thread size
d

1-1/2

1-5/8

1-3/4

1-7/8

2-1/4

2-1/2

2-3/4

3-1/4

3-1/2

3-3/4

d
PP	UNC
	UNF
	8UN
IN	Coarse tooth UNC	Minimum
		Maximum
	Fine tooth UNF	Minimum
		Maximum
	8UN	Minimum
		Maximum

1.5000	1.6250	1.7500	1.8750	2.0000	2.2500	2.5000	2.7500	3.0000	3.2500	3.5000	3.7500	4.0000
6	-	5	-	4 1/2	4 1/2	4	4	4	4	4	4	4
12	-	-	-	-	-	-	-	-	-	-	-	-
8	8	8	8	8	8	8	8	8	8	8	8	8
0.167	-	0.200	-	0.222	0.222	0.250	0.250	0.250	0.250	0.250	0.250	0.250
0.333	-	0.400	-	0.444	0.444	0.500	0.500	0.500	0.500	0.500	0.500	0.500
0.084	-	-	-	-	-	-	-	-	-	-	-	-
0.167	-	-	-	-	-	-	-	-	-	-	-	-
0.125	0.125	0.125	0.125	0.125	0.125	0.125	0.125	0.125	0.125	0.125	0.125	0.125
0.250	0.250	0.250	0.250	0.250	0.250	0.250	0.250	0.250	0.250	0.250	0.250	0.250

①, U—— Thread chamfer distance:
The end chamfer is the dimension from the major diameter of the screw to less than or equal to the minor diameter. The distance from the chamfer end to the complete thread should be one to two pitch lengths each. The end of the stud should be perpendicular to the center of the stud, and both ends should be suitable for marking.