3/8-32UNEF 4131-3C3 – 7/8-9UNC 4131-7C1 4131-7C1B No. 4-48UNF 4131-42 4131-42B 7/16-14UNC 4131-7D1 4131-7D1B 7/8-14UNF 4131-7C2 – No. 5-40UNC 4131-51 4131-51B 7/16-20UNF 4131-7D2 4131-7D2B 1-8UNC 4131-2A1 – No. 6-32UNC 4131-61 4131-61B 1/2-13UNC 4131-1A1 4131-1A1B 1-12UNF 4131-2A2 – No. 6-40UNF 4131-62 – 1/2-20UNF 4131-1A2 – 1-14UNS 4131-2A514 – No. 8-32UNC 4131-81 4131-81B 1/2-28UNEF 4131-1A3 – 1
