Recommended Fasteners for Wafer-Sphere Butterfly Valves [PDF]

Jamesbury

ANSI Bolting Chart

Texas Flange

Thread Terminology

AmericanFastener.com

Solon Flange Washers

Draco Mechanical Supply, Inc.

<<Solon Flange Washers and Flange Disc Washers are special high temperature Belleville Springs which were developed by Solon Manufacturing in 1968. Solon Flange Washers are designed to maintain sufficient bolt tension and resultant gasket pressure by compensating for bolt creep, gasket relaxation and differential expansion during pressure and temperature changes.>>

Bolting Torque Data - Torque Required to Produce Bolt Stress

Lamons Gasket Company

<<The tables below reflect the results of many tests to determine the relation between torque and bolt stress. Values are based on steel bolting well lubricated with a heavy graphite and oil mixture. It was found that a non-lubricated bolt has an efficiency of about 50 percent of a well lubricated bolt and also that different lubricants produce results varying between the limits of 50 and 100 percent of the tabulated stress figures.>>

Type of Studs

AmericanFastener.com

<<Continuous thread, tap-end, double-end. Descriptions and drawings.>>

ANSI Flange Bolting Requirements- Quantities and Sizes [OFFLINE?]

Henning, Metz, Hartford and Associates, Inc.

ANSI Flange Bolting [OFFLINE?]

Henning, Metz, Hartford and Associates, Inc.

A Tutorial on the Basics of Bolted Joints

Bolt Science - Specialists in Bolted Joint Technology

<<The complexity of the simple nut and bolt is frequently underestimated. A fully tightened bolt does not perform like a loose bolt. A fully tightened bolted joint can sustain millions of load cycles without problems, a joint consisting of untightened bolts will frequently fail within a few cycles. The reason for this is the way a bolted joint carries an external load - a fully tightened bolt sustains only a small proportion of any externally applied load. This tutorial seeks to explain why this occurs. Presented in this tutorial are details about the basics of bolted joint technology and in particular on the mechanics of the load transfer mechanism involved in such joints. There are a number of pages to this tutorial covering the topic from the basics.> >