유니파이 가는나사 드릴경
나사경×피치 최소 드릴경 최대 드릴경(%)
(걸림率) 3B 2B 1B
No. 0-80 UNF 1.18 (100%) 1.30 (65%) 1.30 (65%)
  1-72 UNF 1.47 (〃) 1.61 (〃) 1.61 (〃)
  2-64 UNF 1.75 (〃) 1.90 (〃) 1.90 (〃)
  3-56 UNF 2.02 (〃) 2.17 (70%) 2.17 (70%)
  4-48 UNF 2.27 (〃) 2.44 (〃) 2.44 (〃)
  5-44 UNF 2.55 (〃) 2.74 (〃) 2.74 (〃)
  6-40 UNF 2.82 (〃) 2.99 (75%) 3.02 (〃)
  8-36 UNF 3.40 (〃) 3.59 (〃) 3.59 (75%)
  10-32 UNF 3.97 (〃) 4.14 (80%) 4.14 (80%)
  12-28 UNF 4.50 (〃) 4.70 (〃) 4.70 (〃)
  1/4-28 UNF 5.37 (〃) 5.56 (〃) 5.56 (〃)
  5/16-24 UNF 6.79 (〃) 6.96 (85%) 7.02 (〃)
  3/8-24 UNF 8.38 (〃) 8.55 (〃) 8.61 (〃)
  7/16-20 UNF 9.74 (〃) 9.94 (〃) 10.01 (〃)
  1/2-20 UNF 11.33 (〃) 11.46 (90%) 11.60 (〃)
  9/16-18 UNF 12.76 (〃) 12.91 (〃) 13.07 (〃)
  5/8-18 UNF 14.35 (〃) 14.50 (〃) 14.65 (〃)
  3/4-16 UNF 17.33 (〃) 17.50 (〃) 17.59 (85%)
  7/8-14 UNF 20.30 (〃) 20.40 (95%) 20.60 (〃)
  1 -12 UNF 23.10 (〃) 23.30 (90%) 23.50 (〃)
  1 1/8-12 UNF 26.30 (〃) 26.50 (〃) 26.70 (80%)
  1 1/4-12 UNF 29.50 (〃) 29.70 (〃) 29.90 (〃)
  1 3/8-12 UNF 32.60 (〃) 32.70 (95%) 33.00 (85%)
  1 1/2-12 UNF 35.80 (〃) 36.00 (90%) 36.20 (〃)
 
 
유니파이 보통나사 드릴경
나사경×피치 최소드릴경 최대드릴경(%)
(걸림率) 3B 2B 1B
No. 1-64 UNC 1.42 (100%) 1.57 (65%) 1.57 (65%)
  2-56 UNC 1.69 (〃) 1.86 (〃) 1.86 (〃)
  3-48 UNC 1.94 (〃) 2.14 (〃) 2.14 (〃)
  4-40 UNC 2.16 (〃) 2.36 (70%) 2.36 (70%)
  5-40 UNC 2.49 (〃) 2.69 (〃) 2.69 (〃)
  6-32 UNC 2.65 (〃) 2.86 (70%) 2.86 (75%)
  8-32 UNC 3.31 (〃) 3.52 (〃) 3.52 (〃)
  10-24 UNC 3.68 (〃) 3.91 (80%) 3.91 (80%)
  12-24 UNC 4.34 (〃) 4.51 (85%) 4.57 (〃)
  1/4-20 UNC 4.98 (〃) 5.25 (80%) 5.25 (〃)
  5/16-18 UNC 6.41 (〃) 6.64 (85%) 6.72 (〃)
  3/8-16 UNC 7.81 (〃) 8.06 (〃) 8.15 (〃)
  7/16-14 UNC 9.15 (〃) 9.40 (〃) 9.50 (〃)
  1/2-13 UNC 10.60 (〃) 10.80 (90%) 11.00 (〃)
  9/16-12 UNC 12.00 (〃) 12.30 (85%) 12.30 (85%)
  5/8-11 UNC 13.40 (〃) 13.60 (90%) 13.80 (〃)
  3/4-10 UNC 16.30 (〃) 16.60 (〃) 16.80 (80%)
  7/8- 9 UNC 19.20 (〃) 19.50 (〃) 19.60 (85%)
  1 - 8 UNC 22.00 (〃) 22.30 (〃) 22.50 (〃)
  1 1/8- 7 UNC 24.60 (〃) 25.00 (〃) 25.20 (〃)
  1 1/4- 7 UNC 27.80 (〃) 28.20 (〃) 28.40 (〃)
  1 3/8 - 6 UNC 30.30 (〃) 30.80 (〃) 31.00 (〃)
  1 1/2- 6 UNC 33.50 (〃) 34.00 (〃) 34.20 (〃)
  1 3/4- 5 UNC 39.00 (〃) 39.50 (〃) 39.80 (〃)
  2 - 4 1/2 UNC 44.70 (〃) 45.30 (〃) 45.30 (90%
 

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