Phillips pan head SEMS screw with integrated washer (P2)

This is a pan head Phillips screw with a pre-assembled spring washer.

It helps prevent missing or forgetting washers and improves assembly efficiency.

It is also known as a SEMS screw or pre-assembled washer screw.

Depending on the washer configuration, variants include:

• P-2: spring washer only
• P-3: spring washer + flat washer

Standards supplied: JIS B 1188, GB 9074.3

The pre-assembled washers are components that comply with the same international standards as the screw body (small screws).