What bolts to use with flanges?

Published by Charlie Davidson on

What bolts to use with flanges?

The most common materials for stud bolts (for flanges) are ASTM A193 (grade B7, B8, B8M, B8T), ASTM A453 (grade 660), ASTM A320 (grade L7, L7M), and ASTM A182 (duplex and super duplex bolting). For aggressive fluids and environments, stud bolts can be coated with Xylan, Xylar and other materials.

Is standard for flange bolt?

This International Standard specifies the characteristics of hexagon bolts with flange, small series, of product grade A, with threads from M5 up to and including M16, and property classes 8.8, 9.8, 10.9 and A2-70.

What size bolts for a 8 150 flange?

Flange Bolting Chart

150 LB. Flanges
Nominal Pipe Size # Bolts or Studs Dia of Bolts or Studs
6 8 0.75
8 8 0.75
10 12 0.88

How many bolt holes in a 6 flange?

Diameters and bolt circles for standard ASME B16. 5 flanges – 1/4 to 24 inches – Class 150 to 2500

Nominal Pipe Size NPS (inches) Class 300
Diameter of Flange (inches) Diameter of Bolt Holes (inches)
4 10 0.88
5 11 0.88
6 12-1/2 0.88

What size bolts for 8 150 flange?

Flange Bolting Chart

150 LB. Flanges
Nominal Pipe Size # Bolts or Studs Dia of Bolts or Studs
6 8 0.75
8 8 0.88
10 12 1.00

What size are flange bolts?

Flange bolts are partially and fully threaded depending on size and length. The point for hex types is chamfered or rounded; for 12 point, it’s flat and chamfered. Typical sizes for hex range from 3/8″ to 3/4″; #10 to 1/2″ for serrated hex; and 1/4″ to 1″ in diameter for 12 point.

Why stud is used instead of bolts?

Studs provide the ability to obtain much more accurate torque values because the studs don’t twist during tightening as do bolts. Because the studs remain stationary during nut tightening, the studs stretch in one axis alone, providing much more even and accurate clamping forces.

How do flange bolts work?

The flange bolts are usually used in vehicle frames, especially in trucks and anywhere a head bolt is required. They feature a nozzle, thereby speeding the assembly while eliminating the washer. They render four times the bearing area than of a standard hex screw.

What is the standard size for a flange?

ANSI standard flange dimensions are designated as 150, 300, 400, 600, 900, 1500, and 2500, in sizes NPS 1/2 through NPS 24. Regardless of size or specification, flanges are fundamentally designed to close, cover, connect, or support pipe systems.

What is the diameter of a flange bolt circle?

Diameters and bolt circles for standard ASME B16.5 flanges – 1/4 to 24 inches – Class 150 to 2500. Sponsored Links. Flange dimensions are determined by the pipe size and the pressure class required for the application. Flanges are standardized according publications from organizations like ASME, MSS, API and others.

What is a metric flange?

Metric flange bolts Flange bolts are machine threaded for use with a nut . They have a flange under the head that acts like a built in flat washer.

What are API flanges?

ASME/ANSI flanges are commonly used in industrial process systems handling water, steam, air and gas. API flanges are manufactured for high strength operating refinery systems with products such as oil and explosive gases.

Categories: Popular lifehacks