3RACING 3RAC-WC4/BU Race Grade Blue Aluminium M4 Countersink Washers (10)  [3RAC-WC4/BU]

3RACING Aluminium M4 Countersink Washer (10 Pcs) - Blue - 3RAC-WC4/BU
Price:
USD$3.10
Brand:
3Racing
Model:
3RAC-WC4/BU
Condition:
Brand New
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Race Focused 3RACING 3RAC-WC4/BU Countersink Washers

The 3RACING Aluminium M4 Countersink Washer in blue is a compact tuning part for racers who demand consistent fastener seating. These washers locate countersunk screw heads to maintain a flat assembly surface, reducing variables in body mounting and component alignment. The anodised aluminium finish offers a predictable interface and low mass for competitive setups.

Performance and Tuning Use Cases

Designed with competition in mind, these M4 countersink washers help maintain repeatable assembly geometry after repeated strip and rebuild cycles. They are suitable for use on suspension mounts, body posts, and chassis brackets where precise screw head seating supports consistent setup changes and corner weighting.

Material Spec and Compatibility Notes

Manufactured from aluminium with a blue finish, the washers withstand routine workshop handling while keeping weight to a minimum. They are compatible with standard M4 countersunk screws and integrate with commonly used RC chassis materials, providing a low-cost, high-value tuning item for racers and preparers.

Will these washers alter clamping force on countersunk screws?

The washer provides a stable seating surface so clamping is more consistent; any minor change in preload is negligible when torque is set correctly.

Are these suitable for repeated teardown in race prep?

Yes, the aluminium construction resists deformation over multiple service cycles, helping keep fastener geometry repeatable for setup adjustments.

Do they require matched countersink angle for optimal seating?

For best results match the countersink angle of the screw head to the mating surface; the washer tolerates standard M4 countersink geometries used in most RC hardware.