Screw, M4x30 Pan Head Phillips Machine 

In your instruction manual, this part appears on the parts list as:

Item No	Models
D02	LittleMachineShop.com 6750 HiTorque Large Bench Mill LittleMachineShop.com 6700 HiTorque Large Bench Mill Various SX3.5-US SIEG Large Bench Mill

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