AISC provides tabulated allowable shear and tensile stresses for ASTM A307, A325, and A490 structural bolts. When dealing with small fasteners such as SAE J429 Gr 2, 1/4-20 screws, where can one find specifications for allowable shear and tensile stresses similar to what is found in AISC? For example, Fv = 0.4Fy and Ft = 0.6Fy.
Also, this fastener is under large tensile load due to the torque recommended by the manufacturer. If I check the tension in the fastener due to the preload, it seems excessive. Is there a different specification for maximum tension on a preloaded fastener such as 0.9Fy? This joint requires a clamping force (hence the torque), and it experiences combined shear and tension loads (seismic).
If helping, please reference a legitimate source for fact checking if available. Thanks for any assistance.
Also, this fastener is under large tensile load due to the torque recommended by the manufacturer. If I check the tension in the fastener due to the preload, it seems excessive. Is there a different specification for maximum tension on a preloaded fastener such as 0.9Fy? This joint requires a clamping force (hence the torque), and it experiences combined shear and tension loads (seismic).
If helping, please reference a legitimate source for fact checking if available. Thanks for any assistance.