The Simpson Strong-Tie 15-Degree Wire Coil, Full Round Head, Ring-Shank Roofing Nail, model S11A125RNBP, is a 1-1/4 in. collated roofing fastener for pneumatic roofing nailers. This is a collated roofing nail designed for asphalt and synthetic slate roofing. If you are fastening roofing material to OSB or plywood roof decks and want stainless corrosion resistance with the holding power of a ring shank, this is the nail you are looking for.

This specific version uses Type 304 stainless steel, an 11 gauge shank, a 3/8 in. full round head, and a diamond point. On the job, that combination matters for two reasons. First, the large head gives solid bearing on roofing material. Second, the diamond point helps the nail start cleaner so you can keep moving instead of fighting misdrives. The annular-ring shank is the bigger story here, because it is designed to increase withdrawal resistance and provide a more secure attachment in common roof deck materials.

Where this fastener earns its keep is repetitive roofing work. A wire coil format is built around speed, making it a practical choice for crews running pneumatic roofing nailers on production installs, repairs, and punch work. Instead of hand-driving loose nails, you get a collated format that supports faster cycling and more consistent feeding in compatible tools. That saves time when you are laying courses and want to keep the gun loaded with the right fastener style.

Simpson Strong-Tie positions this nail for asphalt and synthetic slate roofing, and also lists the application as roofing, tile and slate. That makes it relevant for roofers and contractors who need a stainless fastener option for exposed weather conditions and demanding exterior installs. The ring-shank profile is especially useful when holding strength matters more than easy removal. In plain terms, this nail is meant to stay put.

The material choice is worth calling out. Type 304 stainless steel gives you strong corrosion resistance for roofing environments without stepping up to the Type 316 version in the same family. If you are working standard exterior roofing conditions and want stainless performance, this S11A125RNBP version hits the middle ground well. If your job is right on the coast, Simpson also offers Type 316 options in the broader product line for even higher corrosion resistance.

From a tool-fit standpoint, this is a 15-degree wire coil roofing nail. Supplementary product data states it is compatible with most 15 degree power roofing nailers and with many major manufacturers' pneumatic tools, while Simpson Strong-Tie directs users to its compatibility matrix or fastener finder for exact model confirmation. That is the right way to think about it: the angle and collated format are correct for the category, but it is still smart to verify your nailer model before ordering a large quantity.

This product is sold here as a 720-pack, which makes sense for smaller-volume jobs, repairs, or stocking the truck without jumping straight to a bulk carton. For contractors, repair techs, and serious DIY users handling roofing maintenance, shed roofs, additions, or partial reroofs, that pack size is easier to manage. If you need a stainless roofing nail that feeds from a coil, grips roof decking well, and is sized at 1-1/4 in. for roofing applications, this one is a practical, no-nonsense pick.

Simpson Strong-Tie 15-Degree Wire Coil, Full Round Head, Ring-Shank Roofing Nail Gets the Basics Right

This is a solid stainless roofing nail for guys who care more about clean feeding, real holding power, and corrosion resistance than chasing the cheapest box on the shelf.

• Who it's for: Roofers, contractors, and serious DIY users installing or repairing asphalt, synthetic slate, tile, or slate roofing with a compatible 15-degree roofing nailer.
• Why it stands out: You get Type 304 stainless steel, a ring-shank body for better pullout resistance, and a full round head in a coil format that makes sense for pneumatic roofing work.
• Worth knowing: This is the 720-pack, so it is great for smaller runs or truck stock. Just confirm your nailer model against Simpson Strong-Tie's compatibility resources before you load up.

• What is this nail designed for? It is designed for asphalt and synthetic slate roofing, and Simpson Strong-Tie also lists the application as roofing, tile, and slate.
• What material is the S11A125RNBP made from? This model is made from Type 304 stainless steel.
• Will it work with my roofing nailer? Supplementary product data says it fits most 15 degree power roofing nailers and many major manufacturers' pneumatic tools, but Simpson Strong-Tie recommends verifying your exact tool model with its Fastener Finder or compatibility matrix.
• What deck materials is the ring-shank design intended to hold in? Simpson Strong-Tie states the annular ring shank is designed to provide a secure attachment to OSB or plywood roof decks.