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1-3/8"-12 UNF Gr.2 Hex JAM Nut
# 122.137
1-3/8"-12 UNF Gr.2 Hex Nut
# 081.137
1-3/8"-12 UNF A194 2H HVY Hex Nut
# 094.137
1-3/8"-12 UNF Gr.5 Hex Nut
# 080.137
1-3/8"-12 UNF A563 Gr.A HVY Hex Nut
# 081.137.HVY
1-3/8"-12 UNF (NE) Nylon L/N
# 151.137
1-3/8"-12 UNF Gr.C (Top-Lock) All Metal L/N
# 086.137
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1-3/8"-12 UNF Gr.2 Hex JAM Nut
1-3/8"-12 UNF Gr.2 Hex Nut1-3/8"-12 UNF A194 2H HVY Hex Nut1-3/8"-12 UNF Gr.5 Hex Nut1-3/8"-12 UNF A563 Gr.A HVY Hex Nut
1-3/8"-12 UNF (NE) Nylon L/N
1-3/8"-12 UNF Gr.C (Top-Lock) All Metal L/N 
1-3/8"