ProTek RC Aluminium Ball Stud Washer Set Blue 12pcs PTK-8371

ProTek RC PTK-8371 is a 12-piece blue anodised aluminium ball stud washer set for precise suspension and linkage setup adjustments. Compatible with 4-40 and M3 ball studs, the set provides 0.5mm, 1.0mm and 2.0mm thicknesses for accurately changing ball-stud height without the compression or distortion associated with softer plastic spacers.

Features

• Aluminium Construction: Designed to resist tweaking and flattening under pressure
• Blue Anodised Finish: Provides a durable coloured finish for a clean factory-style appearance
• Three Thicknesses: Includes 0.5mm, 1.0mm and 2.0mm washers for incremental setup changes
• Ball Stud Height Adjustment: Allows precise spacing when tuning suspension and linkage geometry
• Roll Centre Tuning: Useful for ball-stud spacing when adjusting roll centre on compatible suspension designs
• 4-40 and M3 Compatible: Designed to fit both common RC ball-stud thread formats
• 12-Piece Set: Includes four washers in each of the three supplied thicknesses

Specifications

• Brand: ProTek RC
• Product Type: Ball Stud Washer Set
• Material: Aluminium
• Finish: Blue Anodised
• Washer Size: 3 x 5.5mm
• Thicknesses: 0.5mm, 1.0mm and 2.0mm
• Ball Stud Compatibility: 4-40 and M3
• Total Quantity: 12 Washers
• Part Number: PTK-8371

Includes

• 4 x 3 x 5.5 x 0.5mm Blue Aluminium Washers
• 4 x 3 x 5.5 x 1.0mm Blue Aluminium Washers
• 4 x 3 x 5.5 x 2.0mm Blue Aluminium Washers

FAQ

What is the ProTek RC PTK-8371 washer set used for? PTK-8371 provides aluminium spacers for precisely changing ball-stud height when adjusting suspension or linkage geometry on compatible RC vehicles.

What thicknesses are included with PTK-8371? The set contains four 0.5mm washers, four 1.0mm washers and four 2.0mm washers for a total of 12 pieces.

Do these washers fit M3 ball studs? Yes. ProTek specifies the washers for both M3 and 4-40 ball studs.

What size are the ProTek PTK-8371 washers? Each washer has a nominal 3 x 5.5mm profile, with supplied thicknesses of 0.5mm, 1.0mm and 2.0mm.

Why use aluminium washers instead of plastic spacers? ProTek's aluminium washers are designed to resist tweaking or flattening under pressure, helping maintain the selected ball-stud spacing more consistently.

Can different washer thicknesses be combined? The supplied 0.5mm, 1.0mm and 2.0mm sizes provide multiple spacing options. Where the vehicle setup permits, thicknesses can be selected or combined to achieve the required ball-stud height.

Important Notes

• Ball studs are not included
• Confirm the required ball-stud spacing against the vehicle setup instructions before installation
• Changes to ball-stud height can alter suspension or linkage geometry and vehicle handling