![]() ![]() Other available materials for machined pins include 1045, 4140, A36, A572/A588, A193 Grade B7, A668 and various stainless grades. Straight pins and larger headed pins (1-1/4" diameter and up) are machined from ASTM A108 Grade 1117 bar stock. Smaller headed pins are produced from cold headed low carbon steel wire. This specification covers sizes from 3/16" through 1" diameter. In these applications, a straight pin could fall out of the connection if the cotter pin was improperly installed or failed due to corrosion.ĪNSI/ASME B18.8.1 defines dimensions and tolerances for small cold formed clevis pins for use in machines and linkages. ![]() The AISC manual identifies headed pins as ‘vertical pins’ and straight pins as ‘horizontal’ pins, implying that headed pins should be used in applications where the long axis of the pin is oriented vertically. (AISC) Steel Construction Manual, 13th edition, page 15-19, defines basic dimensions for both headed and straight clevis pins used in structural applications. The American Institute of Steel Construction Inc. Because pin connections normally do not clamp the connected members, they are generally only recommended for use in connections where they are loaded in double shear. They make possible straightforward and rapid field installation of bracing and support members. ![]() Pin connections are a cost effective method of connecting two structural members which are subjected to simple tension loads. ![]()
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