brick or stone

1-8 x 3 1/4 Socket Cap Screw Alloy

5/16 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (100)

1/2-13 x 15 Socket Cap Screw Alloy

25/64 x 12 High Speed Aircraft Bit Cobalt

1 1/8 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (20) 7/16-14 Socket Set Screws Cup Point Alloy brick or stone1 1 8 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (20) . L9 High Tension SAE pattern flat washers are designed for use in high stress, severe service environments. The highest mechanical strength off the shelf fastening system available, its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods.