5/8’’ UNC 1.01 Ton Zinc Plated Bow Nut Conforms To - BS 3974 Finish - Zinc Plated Safe Working Load - 1.01 Ton (1001KG) Product Code A (MM) B (MM) C (MM) D (MM) E (MM) F (MM) G (MM) Thread Pitch SFBOW08 7.7 25 11.7 31 16.1 40 16.7 1.25 SFBOW10 9.7 24.7 11.7 30 18.2 40.4 17.6 1.5 SFBOW12 11.8 28.5 13.2 35.2 15.7 46.4 20 1.75 SFBOW16 15.1 28.6 12.8 36.1 17.5 46.7 19.6 2.00 SFIBOW16UNC 14.5 29.4 12.7 39.8 19.3 43.8 20 11 (Threads Per Inch) SFBOW20 7 38 14 45 24 64 24 2.50 SFBOW24 21.5 47 18 54 31 77.5 26.5 3.00 SFBOW30 28.8 73.4 25.8 67.6 31.1 94 39 3.50 SFBOW36 34.5 74.7 28 67.8 29.3 97.5 39 4.00 These Bow Nuts Are Excellent For Numerous Applications. These Are Hugely Popular Within The Lifting Industry As They Are Tested And Certified For Lifting. Please Note The Safe Working Load Is For Vertical Lift Only Please Note There Is No Weld At The Top Of The Thread Test Certificate Included (Sent via eMail) Please Note We Supply A Huge Variety Of Lifting Equipment FREE DELIVERY