#8 x 1-5/8 in Marine Grade 316 Deck Screws 150-Pack - T20 Bit Included

Our review of these #8 x 1-5/8 in marine grade deck screws finds them aimed at anyone who needs long-lasting fasteners for outdoor woodwork; the single biggest reason to buy is their Type 316 stainless construction, which resists corrosion in saltwater and high-humidity conditions and helps avoid unsightly rust stains. The included T20 star drive bit and Type 17 point make installation straightforward, so this pack suits both professionals and dedicated DIYers who want hardware that will likely outlast the timber in exposed settings.

Key Features

• Package Content: Comes with 150 pieces of #8 x 1-5/8 in screws and a T20 star drive bit, providing enough fasteners for medium to large projects without frequent reorders.
• Marine Grade Durability: Made from Type 316 stainless steel for superior corrosion resistance, keeping fasteners intact in saltwater and coastal environments.
• Versatile Application: Suitable for hardwood, softwood and pressure-treated lumber, making these screws useful for decks, fences, boardwalks and jetties.
• Efficient Installation: Star drive head and included T20 bit reduce cam-out while the Type 17 point starts cleanly and drives to a flush finish.
• Longevity and Aesthetics: Designed to prevent rust stains on timber so installations keep a neat appearance over time.

Who It's For

These screws suit contractors, boatyard crews and homeowners who need fasteners that withstand marine and coastal exposure; the 150-pack is convenient for decking runs and fence panels where many fasteners are required. The included bit saves a trip to the toolbox and helps keep a consistent drive technique across a job.

Those working on very fine woodworking, finish carpentry or indoor projects might prefer smaller head styles or stainless variants with specialized finishes; similarly, if you only need a handful of screws a smaller pack or single boxes would be more economical.

Pros & Cons

Pros

• Type 316 stainless steel offers superior corrosion resistance for coastal and harsh outdoor use.
• Generous 150-piece count provides value and reduces downtime for large projects.
• Included T20 star drive bit and Type 17 point make starts and flush drives faster and more reliable.
• Designed to minimize rust stains, preserving timber appearance over time.

Cons

• Flat head profile and 1-5/8 in length may be more than needed for light interior tasks or trim work.
• Pack weight and bulk may be unnecessary for those who only need a small quantity.

Specifications

Screw size	#8 x 1-5/8 in
Quantity	150 pieces
Material	Type 316 marine grade stainless steel
Head / Drive	Flat head, T20 star drive
Point type	Type 17 sharp point
Includes	T20 star drive bit
Pack weight	Approximately 1.07 lb

Our Verdict

These #8 x 1-5/8 in marine grade 316 deck screws are a practical choice for anyone building or repairing outdoor timber in corrosive environments; the combination of durable stainless construction, a helpful 150-pack and the included T20 bit makes them good value for contractors and serious DIYers. Buy them when longevity and resistance to rust stains matter most.

Frequently Asked Questions

Are these screws suitable for pressure-treated lumber?
Yes, Type 316 stainless steel is compatible with pressure-treated lumber and resists the corrosive effects of treated wood and outdoor exposure.

Is the T20 bit included durable enough for repeated use?
The included T20 star drive bit is intended for immediate installation use and matches the screw heads for reliable driving; professionals may prefer a dedicated impact-rated bit for extensive daily use.

Will these screws prevent rust stains on decking?
They are designed to resist corrosion and greatly reduce the risk of rust stains compared with standard steel fasteners, especially in saltwater or high-humidity settings.