• Enables measurement of the pitch diameter of screw threads with a standard micrometer.
• Determination of the pitch diameter: refer to “Quick Guide to Precision Measuring Instruments”.

SPECIFICATIONS

3-Wire Units set

Order No. Set Wire dia. (mm) Support spindle dia. (mm)
313-101 18 0.170 – 3.200 06.35
Order No.

(One pair)

(Support spindle dia.)

06.35mm (.25″DIA.)

 

Wire dia. (mm)

Pitch
Metric thread

(mm)

Unified thread

(thread per inch)

Whitworth thread

(thread per inch)

952131 0.170 0.2, 0.25, 0.3 80
952132 0.195 0.35 72
952133 0.220 0.4 64
952134 0.250 0.45 56 60
952135 0.290 0.5 48 48
952136 0.335 0.6 44, 40 40
952137 0.390 0.7 36 36
952138 0.455 0.75, 0.8 32 32
952139 0.530 0.9 28 28, 26
952140 0.620 1.0 24 24, 22
952141 0.725 1.25 20 20, 19, 18
952142 0.895 1.5 18, 16 16
952143 1.100 1.75, 2.0 14, 13, 12 14, 12
952144 1.350 2.5 11, 10 11, 10
952145 1.650 3.0 9, 8 9, 8
952146 2.050 3.5 7 7
952147 2.550 4, 4.5 6 6
952148 3.200 5, 5.5, 6 5, 4.5 5, 4.5

Technical Data

Accuracy of wire diameter:  ±2µm