High Type Wing Nuts Size - 20MM Material - 316 Grade Stainless Steel CODE A (MM) B (MM) C (MM) D (MM) E (MM) SFSSHWN08 14 45 11 8 23 SFSSHWN10 19 60 12 10 29 SFSSHWN12 21 72 14 10 31 SFSSHWN16 26 87 16 16 40 SFSSHWN20 33 109 20 20 50 SFSSHWN24 43 134 24 24 60 Wing Nuts Are Used When Something Needs Turning Frequently So These Can Be Turned Without Tools Or If Something May Need Turning Quickly. These Are Hugely Popular Within The Marine Industry As They Are Manufactured From 316 Grade Stainless Steel Giving Them The Best Rust Protection. Please Note We Supply A Huge Variety Of Stainless Steel Parts. FREE DELIVERY Product Code - SFSSHWN20