Simpson Strong-Tie Marine Screw, Pan Head, #8 x 1-1/4-in. #2 Phillips Drive, Type 316, 1000-Pack (T08J125PXM)

Key Features

Built for Saltwater Type 316 stainless steel gives this marine fastener the corrosion resistance you want for boat work, dock repairs, and other exposed applications where ordinary screws do not last. Fast Starts, Strong Hold The extra-sharp point starts quickly, and the high/low serrated thread design cuts into dense material with less fuss while helping resist back-out from vibration. Marine Screw, Bulk Pack This #8 x 1-1/4 in. pan head marine screw comes in a 1,000-count pack, which makes sense for production work, refits, and shop inventory instead of buying small boxes over and over.

Overview

Simpson Strong-Tie Marine Screw, Pan Head, #8 x 1-1/4-in. #2 Phillips Drive, Type 316, 1000-Pack (T08J125PXM) is a corrosion-resistant marine fastener built for fiberglass, plywood, and wood-substitute materials. This is a hand-drive screw designed for fastening wood-to-wood and related marine trim applications. Model Number: T08J125PXM. If you are working on boat trim, rub rail, molding, or other exposed assemblies where moisture and caustic conditions are part of the job, this is the kind of screw that earns its keep.

The big story here is the material. Type 316 stainless steel is used because marine work is hard on hardware. Saltwater, spray, and harsh environments can eat through standard fasteners in a hurry. Using the right screw upfront helps prevent rust streaks, seized fasteners, and callbacks later. That matters whether you are doing new boat construction, repair work, or replacing worn hardware on a vessel that stays near the water.

The thread design is not just there to sound fancy. Simpson Strong-Tie uses a high/low serrated thread form with small cutting indentations that help the screw move through dense materials more easily and quickly. In practical terms, that means less fighting the screw during installation and a better chance of getting clean, controlled fastening in fiberglass-backed assemblies and dense composite materials.

The extra-sharp point also helps on the front end of the job. Faster starts save time when you are running a lot of screws, especially in assembly work. On this 1-1/4 in. version, the screw is threaded 2/3 of the shank length because screws longer than 1 in. follow that pattern. That can help pull materials together without fully threading the entire shank, which is useful when you want a snug, controlled clamp-up.

For drive and handling, this version uses a Phillips #2 recess and a pan head. The pan head gives a broader bearing surface than a countersinking head, which makes sense for trim and attachment work where you want the head to sit proud instead of burying into the material. The #8 screw size, 0.314 in. head diameter, and 0.164 in. shank diameter put it in a useful middle ground for many marine fastening tasks where you need a secure hold without stepping up to a larger fastener.

This particular pack is aimed at people who go through screws regularly. With 1,000 pieces in the box, it is a good fit for marine shops, boat builders, repair crews, and serious owners doing a full refit. If you only need a handful for a one-off fix, a smaller pack may make more sense. But if you are stocking the shop with a reliable stainless pan head screw for repeated fastening in marine conditions, this Simpson Strong-Tie option is a practical buy.

Made for Marine Exposure

This fastener is built for the kind of work where corrosion is the first thing that ruins a good install. Boat interiors, trim pieces, rub rails, and exposed assemblies need hardware that can handle tough conditions without turning into a maintenance problem.

• Designed for fiberglass, plywood, and wood-substitute materials
• Ideal for trim, rub rail, and molding on fiberglass boat hulls

Thread Design That Does the Work

The shape of the screw matters just as much as the material. The high/low serrated threads are made to cut into dense material faster, while the sharp point helps get the screw moving cleanly at the start.

• Phillips #2 drive with pan head design
• Sharp point and high/low serrated threads for easier starts and secure fastening

What’s in the Box

• (1000) Simpson Strong-Tie Marine Screw Pan Head #8 x 1-1/4 in. screws

Key Specifications

Screw Size	#8
Length	1-1/4 in.
Drive Type	Phillips #2
Head Type	Pan Head
Material	Type 316 Stainless Steel
Thread Type	High/Low Serrated Threads
Point Type	Sharp Point
Packaging Quantity	1000
Head Diameter	0.314 in.
Shank Diameter	0.164 in.
Fastener Type	Hand-Drive Screw
Application	Fastening Wood-to-Wood

Compatibility

Driver Interface Uses a Phillips #2 drive, which matches standard Phillips #2 screwdrivers and driver bits. Material Fit Designed for fiberglass, plywood, and wood-substitute materials in marine and chemically caustic environments.

Built For

Marine Repair Boat Building Boat Trim Installation Rub Rail Fastening Molding Installation Fiberglass Applications Wood-to-Wood Fastening Dockside Maintenance

Pro Tip

Because this 1-1/4 in. screw is threaded 2/3 of the shank length, it is a good choice when you want to pull one piece tight to another instead of having full threads bind both layers. That can help when fastening trim or molded pieces where a clean, snug fit matters.

Tool Nut’s Take

Tool Nut’s Take

Simpson Strong-Tie Marine Screw, Pan Head, #8 x 1-1/4-in. #2 Phillips Drive, Type 316, 1000-Pack for serious marine fastening

If you are doing real boat work and need a bulk stainless screw that is made for harsh exposure, this is the right kind of fastener to keep on hand.

• Who it’s for: Marine service shops, boat builders, repair crews, and owners doing larger refits or repeat maintenance.
• Why it stands out: Type 316 stainless steel, a sharp point, and serrated high/low threads give it the combination of corrosion resistance and easier driving that matters in marine materials.
• Worth knowing: This is a 1,000-pack, so it is best for high-volume use. It is also a pan head screw, so buy it when you want the head to bear on the surface instead of countersinking flush.

Common Questions

• What materials is this screw designed for? It is designed for fiberglass, plywood, and wood-substitute materials.
• What drive bit does it use? This version uses a Phillips #2 drive.
• Is this screw suitable for harsh marine conditions? Yes. It is made from Type 316 stainless steel and is intended for severe marine and chemically caustic environments.
• How long is this specific model? Model T08J125PXM is 1-1/4 in. long and uses a #8 screw size.