RED WOLF 3/8-16 T-Slot Nut & Button Head Socket Cap Screw 10-Pack, 304 Stainless Steel — Fits 7/8" Bed Rail (Tundra/Tacoma)

These RED WOLF 3/8"-16 T-slot nuts and button head socket cap screws are a 10-pack fastening solution designed to slide into pickup bed rails and secure cleats, tie-downs, toolboxes, and accessories without drilling.

This kit contains ten 3/8"-16 T-slot nuts, ten matched button head socket cap screws, and one wrench. Each T-slot nut is sized to fit standard bed rail slots approximately 7/8" wide and a 9/16" slot depth, with a base and protrusion profile designed for stable clamping. Constructed from 304 stainless steel, these fasteners resist corrosion and provide strong clamping force for aftermarket racks, cleats, D-rings, and other tie-down hardware. Before buying, measure your truck bed rail to ensure compatibility with the listed dimensions.

Will these T-slot nuts fit my Toyota Tundra or Tacoma bed rail?

These T-slot nuts are engineered to match many OEM and aftermarket rail profiles found on Toyota Tundra and Tacoma trucks. They work best when your bed rail slot is close to the stated 7/8" width and 9/16" slot specification. If your rail dimensions differ significantly, verify measurements before installing to avoid loose or incompatible fittings.

• Designed for rails with 7/8" width and 9/16" slot depth
• Compatible with many Toyota Tundra and Tacoma factory rails
• Measure your rail end cap opening before purchase

How do I install the RED WOLF T-slot nuts and screws?

Installation is straightforward: remove the rail end cap, slide the T-slot nut into position along the rail, align your accessory, and thread the button head screw through the accessory into the nut. The nuts are tapped through so the bolt can pass fully, simplifying assembly and adjustment along the rail length. Use the included wrench to tighten to desired clamp tension.

• Remove rail end cap to access slot
• Slide T-slot nut to chosen position, align accessory
• Thread and tighten the 3/8"-16 button head screw with included wrench

What loads and accessories can these fasteners secure?

Built from 304 stainless steel, the nuts and screws are made for everyday heavy-duty accessories such as tie-down cleats, D-rings, toolboxes, bike and motorcycle racks, and mounting brackets. They provide a secure mechanical clamp without the need to drill through the bed floor, but load capacity depends on accessory design and proper installation. Always verify the accessory’s rated capacity and follow safe load-distribution practices.

• Accepts cleats, D-rings, V-rings, and tie-down brackets
• Works with toolboxes and custom mounting brackets
• No floor drilling required when used with compatible rails

How durable is the 304 stainless steel construction?

304 stainless steel offers strong corrosion resistance in typical road and outdoor conditions, helping prevent rust and staining over time. The material provides reliable mechanical strength for repeated installations and adjustments, though periodic inspection and proper torqueing are recommended to maintain clamp integrity under heavy use.

• Corrosion resistant for long-term outdoor use
• High tensile strength for secure clamping
• Suitable for repeated assembly and repositioning

Who this is for: This 10-pack is ideal for truck owners who want a non-destructive way to add tie-down points, racks, or tool mounts to compatible bed rails—especially Toyota Tundra and Tacoma drivers. It's also useful for DIY fabricators, van and pickup outfitters, and anyone adding accessories that require repeated repositioning along the rail. Confirm your rail dimensions match the product specifications before purchasing to ensure a secure fit.