For outdoor decks that demand enduring strength and a clean, professional finish, the Simpson Strong-Tie No. 7 x 1-5/8 in Lobe Trim Head Deck Screws are built to perform. Crafted from Type 316 stainless steel with a protective coating, these fasteners resist moisture and corrosion in coastal, humid, and treated-lumber environments, helping your deck stay secure and looking sharp for years to come.
Why this screw stands out
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Low-profile trim head provides a near-flush surface for a smooth deck finish and reduced snagging on footwear or furniture.
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Lobe drive minimizes cam-out and delivers steady torque control, making installation faster and more consistent even for beginners.
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316 stainless steel with coating delivers superior outdoor durability, pairing corrosion resistance with a protective layer that extends life in harsh weather or salt-prone environments.
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No. 7 x 1-5/8" dimensions are designed for common exterior decking tasks, striking a balance between strong bite into the substrate and clean, unobtrusive fastenings.
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195 screws per box (1 lb total) provide ample supply for deck projects without frequent reordering.
Key specifications at a glance
- Size: No. 7
- Length: 1-5/8 in
- Head type: Trim (low-profile)
- Drive style: Lobe
- Material: Type 316 stainless steel with coating
- Finish: Coated
- Outdoor use: Yes
- Pieces per box: 195 (1 lb)
Ideal uses and practical benefits
- Exterior deck installations in moisture-rich or coastal environments where corrosion resistance is crucial.
- Fastening standard deck boards (including pressure-treated lumber, cedar, redwood, and select hardwoods) where a clean, low-profile screw line matters.
- Fencing, pergolas, and outdoor structures that benefit from a durable, long-lasting fastener with a refined finish.
Installation tips for best results
- Predrill as recommended for hardwoods or dense boards to minimize splitting and to ensure the trim head seats cleanly.
- Drive slowly and steadily with the correct driver to maximize the benefits of the lobe drive and prevent stripping.
- Avoid mixing dissimilar metals to prevent galvanic corrosion; pair stainless screws with compatible wood and fastener materials.
- Space fasteners consistently to maintain an even appearance and structural load distribution along every deck plank.
