Assembly Parts - Purchase Partners

Nuts
Internal Threads
Class 2B
Min.
Major
Diameter
Pitch
Line
Minor
Diameter
Axis of internal thread
INTERNAL THREADS -CLASS 2B (CONTINUED) ASME B1.1
Nominal Size
& Threads
per Inch
Series
Designation
Allowance
Minor Diameter
Pitch Diameter
Major
Diameter
Min Max Min Max Tolerance Min
1-8 UNC 0.0020 0.865 0.890 0.9188 0.9276 0.0088 1.0000
1-14 UNS 0.0017 0.923 0.938 0.9536 0.9609 0.0073 1.0000
1 1/8-7 UNC 0.0022 0.970 0.998 1.0322 1.0416 0.0094 1.1250
1 1/8-12 UNF 0.0018 1.035 1.053 1.0709 1.0787 0.0078 1.1250
1 1/4-7 UNC 0.0022 1.095 1.123 1.1572 1.1668 0.0096 1.2500
1 1/4-12 UNF 0,0018 1.160 1.178 1.1959 1.2039 0.0080 1.2500
1 3/8-6 UNC 0.0024 1.195 1.225 1.2667 1.2771 0.0104 1.3750
1 3/8-12 UNF 0.0019 1.285 1.303 1.3209 1.3291 0.0082 1.3750
1 1/2-6 UNC 0.0024 1.320 1.350 1.3917 1.4022 0.0105 1.5000
1 1/2-12 UNF 0.0019 1.410 1.428 1.4459 1.4542 0.0083 1.5000
1 5/8-6 UN 0.0025 1.445 1.475 1.5167 1.5274 0.0107 1.6250
1 5/8-8 UN 0.0022 1.490 1.515 1.5438 1.5535 0.0097 1.6250
1 3/4-5 UNC 0.0027 1.534 1.568 1.6201 1.6317 0.0116 1.7500
1 3/4-12 UN 0.0018 1.660 1.678 1.6959 1.7037 0.0078 1.7500
2-4.5 UNC 0.0029 1.759 1.795 1.8557 1.8681 0.0124 2.0000
2-12 UN 0.0018 1.910 1.928 1.9459 1.9538 0.0079 2.0000
2 1/4-4.5 UNC 0.0029 2.009 2.045 2.1057 2.1183 0.0126 2.2500
2 1/4-12 UN 0.0018 2.160 2.178 2.1959 2.2038 0.0079 2.2500
2 1/2-4 UNC 0.0031 2.229 2.267 2.3376 2.3511 0.0135 2.5000
2 1/2-12 UN 0.0019 2.410 2.428 2.4459 2.4540 0.0081 2.5000
2 3/4-4 UNC 0.0032 2.479 2.517 2.5876 2.6013 0.0137 2.7500
2 3/4-12 UN 0.0019 2.660 2.678 2.6959 2.7040 0.0081 2.7500
3-4 UNC 0.0032 2.729 2.767 2.8376 2.8515 0.0139 3.0000
3-12 UN 0.0019 2.910 2.928 2.9459 2.9541 0.0082 3.0000
3 1/4-4 UNC 0.0033 2.979 3.017 3.0876 3.1017 0.0141 3.2500
3 1/2-4 UNC 0.0033 3.229 3.267 3.3376 3.3519 0.0143 3.5000
3 3/4-4 UNC 0.0034 3.479 3.517 3.5876 3.6021 0.0145 3.7500
4-4 UNC 0.0034 3.729 3.767 3.8376 3.8523 0.0147 4.0000