M4x.7, 4mm Metric Stainless Hex Nut with Stainless Free Spinning Conical Spring Washer

Spin Nuts turn freely during install until the conical washer is compressed against the mating surface as the nut is tightened. The locking tension created by the compressed washer helps prevent the nut from loosening during vibration.

These free spinning washer nuts are reusable and offer a one-piece solution versus using a separate lock washer and a nut.

Diameter / Screw Size: 4mm
Pitch: 0.7 Coarse Thread

Wrench Size: 7mm
Washer Outer Diameter: 10mm

Nut Height: 3.2mm
Overall Height without compression: 3.9mm

Nut & Washer Material: A2-50 Stainless Steel

Also known as metric hex nut with non-removable captivated / captive washer, comby nut.