Hex is clean, deep and sharp to allow greater tightening torques. Snap-proof, shear-proof. Class 3A threads. Conforms to ANSI B18.3. Per package of 25. SKU: 42611391 MFG: 18400 Shop more products by Imperial. Buy Nuts, Bolts, Screws & Fasteners on sale from largest construction hardware items store in USA SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. Shipping not available to AK,AE,AA,AE,AE,AE,AP,GU,HI,PR,VI Sold out $1.15 Quantity Sold Out Sold out Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Shoulder Screw Hex is clean, deep and sharp to allow greater tightening torques Snap-proof, shear-proof Class 3A threads Conforms to ANSI B18.3 and ASTM A574 Shoulder Diameter: 3/8 Thread Size: 5-16-18 Key Size: 3/16 Shoulder Length: 1" Per package of 25 FEATURES MFR: 18400 SKU: 42611391 Brand: Imperial