SP-20 FLAT KEY 3*3*18 INGCO (RH150028) E-41
Part Code: SP‑20
Part Name: Flat Key (also called Machine Key or Key Stock)
Size: 3 mm × 3 mm × 18 mm
Diagram Reference: E‑41
Tool Model: INGCO RH150028 — 1500 W Rotary Hammer
What It Is
A flat key is a small precision‑cut metal component used to lock rotating elements to a shaft so they turn together without slipping. It fits into matching keyways (slots) on both the shaft and the rotating part (gear, wheel, or hub), transmitting torque securely.
In the RH150028 rotary hammer, the Flat Key 3×3×18 is used where two parts must maintain a fixed orientation and rotate as one unit.
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