1/32 -0.794mm 3/64- 1.191mm N0 (1.524mm) 1/16 - 1.588mm N1 (1.854mm) 5/64 - 1.984mm N2 (2.184mm) 3/32 - 2.381mm N3 (2.515mm) N4 (2.845mm) N5 (3.175mm) N6 (3.505mm) 1/8 - 3.175mm 5/32 - 3.969mm N8 (4.166mm) N10 (4.826mm) N12 (5.486mm) 3/16 (4.763mm) 1/4 1/4 (6.35mm) 5/16 (7.938mm) 3/8 (9.525mm) 7/16 (11.113mm) 1/2 (12.70mm) 9/16 (14.288mm) 5/8 (15.875mm) 3/4 (19.050mm) 7/8 (22.225mm) 1 (25.4mm) 1-1/8 (28.575mm) 1-1/4 (31.750mm) 1-3/8 (34.925mm) 1-1/2 (38.100mm) 1-3/4 (44.450mm) 2 (50.800mm) 5/16 5/8

1/8 - 3.175mm 5/32 (3.969mm) 3/16 (4.763mm) 1/4-6.35mm 5/16 -7.938mm 3/8-9.525mm 1/2-12.700mm 5/8-15.875mm 1''-25.4mm

UNC (STANDARD) UNF (PAS FIN)