weideer 100PCS M4.2 M6 M8 Universal Fender Liner Screw U

A 100-piece mixed kit of durable metal fender liner screws, U-nut clips and push retainers sized M4.2, M6 and M8 for attaching splash shields, bumpers and interior panels.

This weideer fastener assortment supplies commonly used hex-head screws, U-style nuts and rivet-style push retainers engineered for automotive body panels and engine splash shields. The parts are made from corrosion-resistant metal with sizes chosen to fit panel thicknesses from roughly 0.03" to 0.16" (0.8–4.0 mm), covering many passenger cars, trucks and SUVs. Whether you are repairing a wheel well liner or replacing a loose bumper, this kit helps avoid mixed trips to the hardware store.

What exactly is included in the 100-piece set?

The kit combines three screw thread sizes with matched U-nut clips and retainers so you can address common attachment points around the vehicle. Quantities are balanced for general repair needs and make it easy to replace multiple fasteners in one job.

• M4.2 x 20 mm hex head screws — quantity suited for thin panels and trim
• M6 x 24 mm hex head screws — mid-range length for many liners and covers
• M8 x 33 mm hex head screws — for heavier panels and thicker mounts
• U-nut clips sized for panel thickness 0.80–4.00 mm and center-to-edge requirement ~13.5 mm

How do these fasteners perform against corrosion and wear?

weideer supplies these fasteners in metal designed to resist routine road conditions, helping prevent premature failure from rust or abrasion. Their construction favors strength at mounting points that see vibration and road debris contact.

• Metal composition for improved wear resistance
• Corrosion-resistant finish extends service life
• Hex head design for reliable torque with a socket or wrench
• U-nut geometry reduces panel stress and distributes load

Will this kit fit my vehicle's fender liner or splash shield?

These fasteners cover the most common panel thicknesses and hole-to-edge requirements used on many modern vehicles, but compatibility depends on your car's specific clip style and thread pitch. Check the panel thickness and hole-to-edge distance on your vehicle against the kit's specifications before installing.

• Panel thickness range: 0.80–4.00 mm (0.03"–0.16")
• Center-of-hole to edge: about 13.5 mm (3/8")
• Thread pitches: M4.2-1.41, M6-1.0, M8-1.25 included
• Measure original fastener or test-fit a single piece first

How should I use these screws and clips during a repair?

Use the matching screw with its U-nut clip: position the U-nut over the panel edge or into the access hole, align the screw through the liner or shield, then tighten until seated. Avoid over-torquing metal clips—snug and secure is sufficient to hold panels without deforming them.

• Install U-nut on panel edge before inserting screw
• Use hand tools or low-torque driver to prevent strip-out
• Replace damaged clips rather than reusing deformed ones
• Keep variety on hand for quick roadside or garage repairs

Who is this for: The weideer 100PCS kit is aimed at DIY mechanics, body-shop technicians and vehicle owners who want a single, mixed set of reliable metal fasteners for routine maintenance and panel repairs. It’s useful for restoring loose fender liners, securing engine splash shields, fastening bumpers and replacing trim clips on a wide range of cars and light trucks. Verify fitment against your vehicle’s original fasteners before committing to bulk installation.