M4 Flat Washer A4 Stainless (4 pack)
Pack of 4 premium quality marine-grade A4/316 stainless steel flat washers for bolts and set screws with a M4 (4mm) thread size. Suitable for dinghy fittings and general boat work. Available in 4 types of M4. Also available in 5 other sizes M5, M6, M8, M10 & M12.
Type 1: 9mm (Form A)
- Outside diameter: 9.0mm
- Inside diameter: 4.4mm
- Thickness: 0.9mm
Type 2: 12mm (DIN 9021)
- Outside diameter: 12.0mm
- Inside diameter: 4.4mm
- Thickness: 1.1mm
Type 3: 15mm (Penny Washer)
- Outside diameter: 15.0mm
- Inside diameter: 4.4mm
- Thickness: 1.2mm
Type 4: 20mm (Penny Washer)
- Outside diameter: 20.0mm
- Inside diameter: 4.4mm
- Thickness: 1.4mm
Stated sizes may vary by around 0.1mm-0.2mm. Image is for illustrative purposes only and may not accurately represent the actual dimensions.