8D (2-1/2") Wood Siding Nail - 304 Stainless Steel, 1 lb. Pkg PSLV3 Powder Actuated Threaded Studs while the strapless design was

while the strapless design was created specifically for field welding to a steel column

Lumber Size: Intended for use with a 4x post for light-duty connections

Heavy-gauge steel construction for strength and durability

Only Screw Approved for Use in Simpson Strong-Tie® Connectors: The SD screw is designed to replace nails and exceed their load capacities in tested applications

8D (2-1/2") Wood Siding Nail - 304 Stainless Steel, 1 lb. Pkg PSLV3 Powder Actuated Threaded Studs while the strapless design wasSimpson wood siding nails are available in either type 304 or type 316 stainless steel. Checker pattern on nail head blends well with wood grain, reduces glare from sunlight and accepts surface finishes. Annular ring shank increases pull out resistance to provide a secure attachment that reduces cupping of siding boards.