These are stainless steel Metric 4X0.7X 6mm long set screws for the GGT-4 spark arrestor (requires 3 screws . Includes qty 3 set screws.
Part# RP-SS-6 Technical Data:
Set screw-Material: stainless steel, Thread size: 4X0.7mm, Length: 6mm, Allen key size: 2mm
Qty-3
Weight- 1 gram/0.04oz (for qty 3)