fit and elongation

10 x 2 1/2 Simpson Flat-Head Deck-Drive™ DWP Wood Screws - 6-Lobe Drive 316 SS - Deck Pack (350)

5/8-18 x 4 1/2 Socket Cap Screw Alloy

5/8-11 x 4 1/2 Simpson Wedge Anchor 304 SS (20)

and the jaws open to a lock position when the screw is inserted

1 1/2-6 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (36) 9/16-18 Hex Cap Screws 316 Stainless Steel fit and elongation1 1 2 6 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (36). L9 High Tensile Strength Hex Collared Locknuts 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. Brighton Best manufactures L9 nuts from AISI alloy