• for Camera Tripod Mounting Threads
  • for Camera Release Mounting Taper Internal Threads
Unit:mm
SizeMinor diameter of internal threads (D1)Tap drill hole size
Max. Min.(reference)
1/4 - 205.267 4.9755.19

28° 2.91〜3.3

  • for Automobile Tire Valve Threads
  • for Bicycle Tire Valve Threads
Unit:mm
SizeMinor diameter of internal threads (D1)Tap drill hole size
Max.Min.(reference)
5 V1 4.8014.5974.75
8 V1 7.2397.0367.19
8 V2 7.0356.7826.97
9 V1 8.8658.6618.81
10 V1 8.9008.7508.86
10 V2 9.5509.3509.50
11 V1 10.0339.7299.96
12 V1 11.37911.17611.33
13 V1 11.60811.32811.54
13 V2 12.03911.83711.99
15 V1 13.95013.75013.90
16 V1 15.08814.85915.03
17 V1 15.95015.75015.90
17 V2 16.56016.30716.50
17 V3 16.10315.74816.01
19 V1 17.67817.32317.59
20 V1 19.45019.25019.40
Unit:mm
SiMinor diameter of internal threads (D1)Tap drill hole size
zeMax.Min.(reference)
CTV 5 - 364.7324.6304.71
CTV 5 - 244.2143.9544.15
CTV 8 - 327.1927.0407.15
CTV 8 - 307.3447.1837.30
5 V 24.6004.4004.55
6 V 15.5405.4405.52
  • for Steel Conduit Threads (CTC)
  • for Thick Steel Conduit Threads (CTG)
Unit:mmUnit:mm
SizeMinor diameter of internal threads(D1)Tap drill hole sizeSizeMinor diameter of internal threads(D1)Tap drill hole size
Max.Min.(reference)Max.Min.(reference)
CTC 19 - 1618.20817.80818.11CTG 16 - 1419.52219.02219.4
CTC 25 - 1624.50824.10824.41CTG 22 - 1425.00824.50824.9
CTC 31 - 1630.90830.50830.81CTG 28 - 1131.36130.76131.2
CTC 39 - 1637.20836.80837.11CTG 36 - 1140.02239.42239.9
CTG 42 - 1145.91545.31545.8

Technical Inf