3RACING 3RAC-WC4/RE Performance M4 Countersink Washer Set (10)  [3RAC-WC4/RE]

3RACING Aluminium M4 Countersink Washer (10 Pcs) - Red - 3RAC-WC4/RE
Price:
USD$3.10
Brand:
3Racing
Model:
3RAC-WC4/RE
Condition:
Brand New
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Racing Grade Countersink Seating from 3Racing

For competitive setups the 3Racing 3RAC-WC4/RE countersink washers provide consistent seating for M4 countersunk screws, helping maintain repeatable panel positions after service. Their profile ensures predictable contact between screw head and surface under torque.

Engineering Benefits of Anodised Aluminium

Aluminium offers a high strength-to-weight ratio beneficial for unsprung and bodywork components. The anodised red finish provides an oxide layer that reduces fretting corrosion at the interface and preserves a uniform clamp surface for tuning adjustments.

Fitment Guidance for Race Builds

These washers are intended for M4 countersunk interfaces common on touring and short course models. Use them where flush mountings are critical for aerodynamics or clearance, and check screw engagement to maintain clamping force without thread damage.

What torque range is suitable when fitting these washers?

Apply torque appropriate to the mating screw and substrate; use a calibrated driver for repeatable clamping and avoid overtorque that can deform thin panels or strip threads.

Can these washers help with repeatable body alignment between races?

Yes, the consistent seating face reduces variation in panel height after refits, which helps maintain aerodynamic and clearance settings across events.

Are they compatible with aluminium and composite body mounts used in race setups?

They suit both aluminium and composite mounts; ensure mating threads and screw lengths are matched to avoid localized stress concentrations on thin composites.