4131-81 4131-81B 1/2-28UNEF 4131-1A3 – 1-32UN 4131-2A532 – No. 8-36UNF 4131-82 – 9/16-12UNC 4131-9D1 4131-9D1B 1 1/16-12UN 4131-1E512 – No. 10-24UNC 4131-101 – 9/16-18UNF 4131-9D2 4131-9D2B 1 1/8-7UNC 4131-1F1 4131-1F1B No. 10-32UNF 4131-102 4131-102B 9/16-24UNEF 4131-9D3 – 1 1/8-8UN 4131-1F58 4131-1F58B No. 12-24UNC 4131-121 – 5/8-11UNC 4131-5C1 4131-5C1B 1 1/8-12UNF 4131-1F2 – No. 12-28UNF 4131
