Best Screws For Joist Hangers

Richard Shafer | 03-02-2026

Choosing the right screws for joist hangers can make the difference between a secure, long-lasting structure and one prone to failure. Many DIYers and professionals alike struggle with finding fasteners that offer both strength and durability, especially when exposed to the elements or heavy loads.

This guide highlights the best screws for joist hangers, comparing their unique features, materials, and suitability for various environments. Whether you’re building a deck, framing a structure, or tackling repairs, you’ll find clear recommendations to help you select the right screw for your project.

Editor's Choice
Simpson Strong-Tie Structural Screws 2x100 Pack
Simpson Strong-Tie Structural Screws 2x100 Pack
Premium Pick
MTZUL SD Connector Screws #9 x 1-1/2
MTZUL SD Connector Screws #9 x 1-1/2" 500-Pack
Budget Pick
Simpson Strong-Tie SD9112R500 Connector Screws 500-Pack
Simpson Strong-Tie SD9112R500 Connector Screws 500-Pack

Our Top 6 Best Screws For Joist Hangers Reviewed

After hands-on research and detailed comparisons, these Screws For Joist Hangers products stood out as the most dependable choices.

1. Simpson Strong-Tie Structural Screws 2x100 Pack

Best for Bulk Interior & Exterior Use
Simpson Strong-Tie Structural Screws 2x100 Pack
9.8

Simpson Strong-tie

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When building with joist hangers, using the right screw is essential for safety and stability. Many fasteners lack proper fit or strength, leading to compromised connections and extra work.

This Simpson Strong-Tie pack is a reliable choice for those who need a large quantity of screws approved for both interior and most exterior applications. It's especially suited for frequent builders or anyone working with Simpson connectors who values easy identification and consistent results.

  • Connector Compatibility: Shank designed to precisely fit Simpson Strong-Tie connector holes for secure installation
  • Integrated Washer Head: 1/4-in. hex head with 0.370-in. washer reduces cam-out and simplifies post-install identification
  • Optimized Heat Treating: Enhanced ductility and strength for demanding structural applications

Compared to standard nails or generic screws, this option prioritizes compatibility and ease of use for Simpson connectors. The main tradeoff is that it may be more specialized, making it less versatile for non-connector tasks.

Strength
  • Large 200-pack for big projects
  • Approved for many connectors
  • Easy post-install identification
  • Works for interior and most exterior jobs
  • Reduced cam-out design
Weakness
  • Less versatile for non-connector uses
  • Not stainless steel

2. MTZUL SD Connector Screws #9 x 1-1/2" 500-Pack

Best for Corrosion Resistance in Harsh Environments
MTZUL SD Connector Screws #9 x 1-1/2

Joist hanger installations often fail due to rust or inadequate fastener strength, especially in outdoor or marine settings. Choosing a screw with advanced protection is crucial for long-term reliability.

MTZUL's heavy-duty connector screws are engineered for demanding environments, featuring a four-layer rust protection system and high-carbon steel construction. They're ideal for builders working in coastal, industrial, or high-moisture areas who want peace of mind against corrosion and deformation.

  • Four-Layer Rust Protection: Heavy-duty galvanization and phosphating withstand 1500-hour salt spray for superior longevity
  • High-Carbon Steel Build: Delivers high strength and sharp, self-tapping threads for quick installation
  • Versatile Application: Suitable for decks, docks, fences, and furniture, indoors or out

Compared to typical galvanized screws, MTZUL prioritizes extreme corrosion resistance and bulk quantity. The main tradeoff is that the package size may be more than needed for small projects.

Strength
  • Exceptional rust resistance
  • Large 500-count pack
  • Sharp, efficient threading
  • Compatible with SD9112R500 connectors
  • Suitable for marine use
Weakness
  • Bulk quantity may be excessive for small jobs
  • No stainless steel option

3. Simpson Strong-Tie SD9112R500 Connector Screws 500-Pack

Best for Official Simpson Connector Approval
Simpson Strong-Tie SD9112R500 Connector Screws 500-Pack
9.1

Simpson Strong-tie

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Using the wrong fastener in structural connectors can compromise safety and code compliance. For those needing screws specifically tested and approved for Simpson Strong-Tie connectors, this pack offers peace of mind.

This product is designed as a direct nail replacement, with load capacity exceeding standard 10d nails. It's best for professionals and serious DIYers who want official approval and compatibility for both interior and exterior applications.

  • Simpson Approval: Only screw officially approved for use in select Simpson connectors
  • Integrated Washer Head: 1/4" hex with 0.370" washer for secure fit and easy identification
  • Hex Driver Included: Simplifies installation and reduces tool changes

Unlike generic alternatives, this screw prioritizes code compliance and brand compatibility. The tradeoff is a higher price point and less flexibility for non-Simpson applications.

Strength
  • Officially approved for Simpson connectors
  • High load capacity
  • Hex driver included
  • Easy to identify after install
Weakness
  • Best suited for Simpson connectors only
  • Not stainless steel

4. DCOMA Connector Screws #9 x 1-1/2" Heavy-Duty

Best Multi-Layer Coating for Durability
DCOMA Connector Screws #9 x 1-1/2

Outdoor and structural projects demand screws that resist both wear and corrosion. Many fasteners fall short in harsh conditions, leading to premature failure or extra maintenance.

DCOMA's connector screws are engineered for maximum durability, featuring advanced heat treatment and a multi-layer coating system. They're a strong fit for users needing reliable performance in marine, industrial, or exposed environments.

  • Multi-Layer Coating: Ceramic, chemical adhesion, and zinc-rich layers provide superior rust protection
  • Precision Heat Treatment: Balances hardness and toughness for long service life
  • Connector Compatibility: Designed for 9112R100 connectors and similar applications

Compared to standard galvanized screws, DCOMA prioritizes advanced surface protection. The tradeoff is that the product may be overbuilt for simple, indoor-only projects.

Strength
  • Advanced corrosion resistance
  • Engineered for heavy-duty use
  • Fits common connector sizes
  • Reliable in harsh environments
Weakness
  • More protection than needed for indoor use
  • Not stainless steel

5. Simpson Strong-Tie SD9112R100 #9 x 1-1/2" Screws

Best for Easy Identification and Handling
Simpson Strong-Tie SD9112R100 #9 x 1-1/2
8.7

Simpson Strong-tie

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Fastener confusion can slow down projects and lead to mistakes, especially when working with multiple screw types. Clear identification and easy handling are key for efficient installation.

This Simpson Strong-Tie screw is designed for quick use and post-install identification, making it ideal for busy job sites or DIYers who want to avoid mix-ups. Its mechanically galvanized coating also offers solid corrosion resistance for most applications.

  • Stamped Hex Head: 1/4" head with 0.370" washer stamped for easy identification
  • Mechanically Galvanized: Class 55 coating for rust resistance in interior and most exterior settings
  • Optimized Shank: Fits precisely into Simpson connector holes for secure fastening

Compared to generic screws, this option prioritizes user-friendly features and compatibility. The tradeoff is that it may not offer the highest corrosion resistance for extreme environments.

Strength
  • Quick and easy to identify
  • Good corrosion resistance
  • Fits Simpson connectors
  • Optimized for easy handling
Weakness
  • Not for extreme marine use
  • Not stainless steel

6. CAMNWAMN #9 x 1-1/2" Joist Hanger Screws 500-Pack

Best Budget Bulk Option
CAMNWAMN #9 x 1-1/2
8.5

Camnwamn

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Large projects often require a high volume of screws, and cost can quickly add up. Finding a budget-friendly bulk option that still delivers strength and reliability is important for value-conscious buyers.

CAMNWAMN offers a 500-pack of heavy-duty joist hanger screws designed for both wood-to-wood and wood-to-metal connections. They're a practical choice for those needing quantity without sacrificing basic corrosion resistance or holding power.

  • Bulk 500-Pack: Ideal for large jobs or stocking up
  • Corrosion Resistant Coating: Passed 1500-hour salt spray test for outdoor durability
  • Precision Hex Head: 1/4" drive with integrated washer for secure fit

Compared to premium brands, this screw prioritizes affordability and quantity. The tradeoff is that it may not have the same advanced coatings or brand-specific approvals.

Strength
  • Very cost-effective for large jobs
  • Decent corrosion resistance
  • Works for decking and framing
  • Large quantity per pack
Weakness
  • No brand-specific approvals
  • Basic coating only

Buying Guide: How to Choose the Best Screws for Joist Hangers

Selecting screws for joist hangers is a technical decision that impacts the safety and longevity of your structure. The right fastener must balance strength, corrosion resistance, and compatibility with connectors. Many buyers mistakenly assume any screw will do, but using the wrong type can lead to structural failure or code issues.

Choosing Between Bulk and Small Packs

The quantity you need depends on the size and scope of your project. Bulk packs are ideal for contractors or large deck builds, offering better value per screw. Smaller packs are more manageable for DIYers or occasional repairs, reducing waste and upfront cost.

Understanding Material and Coating Differences

Screw material and surface treatment directly affect durability and rust resistance. Galvanized and high-carbon steel are common for general use, while stainless steel or advanced multi-layer coatings are best for harsh environments.

Connector Approval and Compatibility

Not all screws are approved for use in structural connectors. For code compliance and safety, look for products specifically tested and approved for your connector brand, especially Simpson Strong-Tie.

Selecting the Right Length and Head Design

Most joist hanger screws are #9 x 1-1/2", but longer options are available for thicker materials. Integrated washer heads and hex drives simplify installation and reduce cam-out.

Final Buying Advice

Choosing the right screw for your joist hangers is about matching the product to your project's demands. Overbuying can waste money, while underbuying may compromise safety. Focus on compatibility, corrosion resistance, and pack size for the best results.

FAQ For Screws For Joist Hangers

1. What size screw is best for joist hangers?

Most joist hangers require #9 x 1-1/2" screws, but always check your connector's specifications for exact sizing.

2. Are stainless steel screws necessary for outdoor projects?

Stainless steel is recommended for marine, coastal, or highly corrosive environments. For most exterior jobs, galvanized or multi-layer coated screws are sufficient.

3. Can I use regular wood screws in joist hangers?

No, only use screws specifically approved for joist hangers to ensure safety and compliance with building codes.

4. Do all joist hanger screws fit all connectors?

No, some screws are designed for specific connector brands or models. Always verify compatibility before purchasing.

5. How many screws do I need for a deck project?

The quantity depends on the number of joist hangers and the manufacturer's installation instructions. Bulk packs are best for large decks.

6. What is the benefit of an integrated washer head?

An integrated washer head reduces cam-out, provides a secure fit, and makes post-install identification easier.

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