Unique Bargains Die Spring 18mm OD 40mm Long Spiral Stamping Light Load Compression Die Springs, Blue

Hole Diameter(Outer Diameter): 18mm/0.71"; Inner Diameter (tolerance +0.5mm): 9mm/0.35"; Free Length: 40mm/1.57" (+/- 2mm); Max Compression Rate: 40%; Maximum Load: 422N||Color: Blue; Load Type: Light Load; Material: Spring Steel; Surface Treatment: Spray Paint||Rectangular section, closed-end design. Die springs are primarily used in die machinery equipment, for plastic injection 3D printer electric part.||Made of spring steel material, the surface is blue painted, not easy to rust, and more durable.||Package Content: 1pcs x Compression Die Spring