B7 Double Ended Stud Bolt with Heavy Duty 2H Hex Nuts

PRODUCTS

Description

Reviews

Introduction

B7 Double Ended Stud Bolts paired with 2H Heavy Duty Hex Nuts represent the industry-standard high-strength fastening solution for high-pressure and high-temperature applications, particularly in the oil, gas, and petrochemical sectors. The B7 stud, manufactured from quenched and tempered chromium-molybdenum alloy steel (ASTM A193), provides a high tensile strength of 125 ksi and is rated for service temperatures up to 450°C（840°F). The accompanying 2H nut (ASTM A194) features a "Heavy Duty" profile—wider and thicker than standard nuts—to ensure the thread engagement can withstand the immense bolt tension without stripping. This combination is the "gold standard" for flange connections, offering superior reliability, uniform load distribution, and ease of maintenance in demanding industrial environments.

Product Data

Specification
M6	M20
M8	M22
M10	M24
M12	M27
M14	M30
M16	M36
M18

Specification
Size	Pitch			L1	L2
Size	UNC	UNF	UNS	L1	L2
1/4	20	28	/	1’’-36’’	3’/6’/12’
5/16	18	24	/	1’’-36’’	3’/6’/12’
3/8	16	24	/	1’’-36’’	3’/6’/12’
7/16	14	20	/	1’’-36’’	3’/6’/12’
1/2	13	20	/	1’’-36’’	3’/6’/12’
9/16	12	18	/	1’’-36’’	3’/6’/12’
5/8	11	18	/	1’’-36’’	3’/6’/12’
3/4	10	16	/	1’’-36’’	3’/6’/12’
7/8	9	14	/	1’’-36’’	3’/6’/12’
1	8	12	8	1’’-36’’	3’/6’/12’
11/8	7	12	8	1’’-36’’	3’/6’/12’
11/4	7	12	8	1’’-36’’	3’/6’/12’
13/8	6	12	8	1’’-36’’	3’/6’/12’
11/2	6	12	8	1’’-36’’	3’/6’/12’
13/4	5	/	8	1’’-36’’	3’/6’/12’
2	4.5	/	8	1’’-36’’	3’/6’/12’
21/4	4.5	/	8	1’’-36’’	3’/6’/12’
21/2	4	/	8	1’’-36’’	3’/6’/12’
23/4	4	/	8	1’’-36’’	3’/6’/12’
3	4	/	8	1’’-36’’	3’/6’/12’
31/4	4	/	8	1’’-36’’	3’/6’/12’
31/2	4	/	8	1’’-36’’	3’/6’/12’
33/4	4	/	8	1’’-36’’	3’/6’/12’
4	4	/	8	1’’-36’’	3’/6’/12’