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U.S.P. SUTURE SIZES CHART
U.S.P. Size
COLLAGEN SUTURES
SYNTHETIC SUTURES
Metric Size
Diameter Range
Metric Size
Diameter Range
# 7
–
–
9
0.900 – 0.999
# 6
–
–
8
0.800 – 0.899
# 5
–
–
7
0.700 – 0.799
# 4
8
0.800 – 0.899
6
0.600 – 0.699
# 3
7
0.700 – 0.799
6
0.600 – 0.699
# 2
6
0.600 – 0.699
5
0.500 – 0.599
# 1
5
0.500 – 0.599
4
0.400 – 0.499
# 0
4
0.400 – 0.499
3.5
0.350 – 0.399
# 2-0
3.5
0.400 – 0.399
3
0.300 – 0.339
# 3-0
3
0.300 – 0.339
2
0.200 – 0.249
# 4-0
2
0.200 – 0.249
1.5
0.150 – 0.199
# 5-0
1.5
0.150 – 0.199
1
0.100 – 0.149
# 6-0
1
0.100 – 0.149
0.7
0.070 – 0.099
# 7-0
0.7
0.070 – 0.099
0.5
0.050 – 0.069
# 8-0
0.5
0.050 – 0.069
0.4
0.040 – 0.049
# 9-0
0.4
0.040 – 0.049
0.3
0.030 – 0.039
# 10-0
–
–
0.2
0.020 – 0.029