have standard concentricity, smoothly exterior, concentric.
2. This screw washer is precisely matched, and the bearing exterior of the is large, and the lock is firmer.
3. The countersunk head screw gasket is made of pure copper, which is not easy to rot, moisture, and oxidation.
4. These screw washers are small in size, light in weight and easy to install and use.
5. Can be installed on many different types of materials. Wide range of applications.
Specification:
Item Type: Countersunk Screw Washer
Material: Pure Copper
Model Inner Diameter Approx. Outer Diameter Approx. Thickness Approx. Counterbore Angle Single Weight Approx.
M3 3.1mm / 0.1in 7.9mm / 0.3in 2.05mm / 0.1in 90° 0.52 g / 0.02 oz
M4 4.1mm / 0.2in 9.9mm / 0.4in 2.5mm / 0.1in 90° 0.88 g / 0 oz
M5 5.1mm / 0.2in 11.9mm / 0.5in 3.2mm / 0.1in 90° 1.63 g / 0.1 oz
M6 6.1mm / 0.2in 13.9mm / 0.5in 3.5mm / 0.1in 90° 2.35 g / 0.1 oz
packing list:
50 x Gasket