Cap Screw – Hex Head, 3/8″-16 x 5″

Keep hardware secure with a durable Seachoice hex head cap screw sized for 3/8″-16 threads and 5″ lengthan ideal choice for marine fastener replacements where corrosion resistance matters.

Key Features

• Hex head cap screw for straightforward wrench/driver access
• 3/8″-16 coarse thread size
• 5″ length for appropriate stack-up/through-hole applications
• 18-8 stainless steel for corrosion resistance

Intended Use

• Marine fastener replacements
• Boat and marine hardware mounting
• General-purpose equipment and hardware assemblies (3/8″-16 x 5″ cap screw requirement)

Product Details

• Brand/Category: Seachoice (LNS) Bulk Fasteners
• Type: Cap Screw – Hex Head
• Thread Size: 3/8″-16
• Length: 5″
• Material: 18-8 Stainless Steel
• SKU: 50-00059

Parts Desk Insights

Best Use Case: Use this cap screw when your assembly calls specifically for a 3/8″-16 hex head cap screw with a 5″ length, especially in wet or salt-air environments where stainless hardware helps resist corrosion.

Common Issues: If the fastener doesnt seat fully or threads dont engage, verify the mating thickness/stack-up for the required 5″ length and confirm youre matching the 3/8″-16 coarse thread (not a fine-thread size). Also check whether your installation needs matching nuts/washers and appropriate corrosion protection on mating parts.

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