GRK 5/16 x 3-1/8-inch Star Drive Round Washer Head RSS Rugged Structural Screw

#15 x 2-1/2 Construction Lag Screw Exterior Coated Torx/Star Drive Heavy Duty Structural Lag Screw Far Superior to Common Lag Screws - Modified

Anyone here see a reason this platform wouldn't confidently hold

The Ultimate Guide to GRK Fasteners for Professional Remodelers

5/16 x 3-1/8 RSS Rugged Structural Self-Tapping Screw

GRK Fasteners 5/16 in. x 3-1/8 in. Star Drive Washer Head Rugged

GRK Screws - Fasteners

GRK 5/16 x 3-1/2 10223 RSS Rugged Structural Screws

GRK's RSS screw is made of specially hardened steel to provide you with high-tensile, torque and shear strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. RSS screws that are 3-1/8 in and longer have CEE threads which enlarge the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increases the screw's drawing strength.

3/8 RSS Rugged Structural Screw by GRK Fasteners-6-50

GRK Fasteners RSS No. 20 x 8 L Star Round Head Construction

GRK Fasteners 5/16 in. x 3-1/8 in. Star Drive Low Profile Washer

Have a question about GRK Fasteners 5/16 in. x 3-1/8 in. Star

GRK Fasteners 5/16 in. x 3-1/8 in. Star Drive Washer Head Rugged

GRK 10161 1/4 x 3-1/8 RSS Rugged Structural Screws 500 Count

Anyone here see a reason this platform wouldn't confidently hold