1. BA, Brass & Model Engineer Threads
  2. Model Engineer

Model Engineer

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Total record count: 20.

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ME = Model Engineer Threads These come in 32,40 and 60 tpi sizes. Model Engineer nuts and bolts are rarely commercially available.

 

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Actions Size Outside Dia Inch Tpi Pitch Inch Core Dia Inch Thread Depth Thou Tapping Drill Size Inch Tapping Drill mm Letter Or Number
1/8 0.125 32 0.031 20 0.093 2.4 3/32
5/32 0.156 32 0.031 20 0.124 3.2 1/8
3/16 0.188 32 0.031 20 0.156 4.0
7/32 0.219 32 0.031 20 0.187 4.7
1/4 0.250 32 0.031 0.210 20 0.213 5.5 3
9/32 0.281 32 0.031 0.241 20 0.246 6.3 D
5/16 0.313 32 0.031 0.273 20 0.277 7.1 J
3/8 0.375 32 0.031 0.335 20 0.339 8.6 R
7/16 0.438 32 0.031 0.398 20 0.404 10.2 Y
1/2 0.500 32 0.031 0.460 20 0.469 11.8 15/32
1/8 0.125 40 0.025 0.093 16 0.094 2.4 3/32
5/32 0.156 40 0.025 0.125 16 0.129 3.3 30
3/16 0.188 40 0.025 0.156 16 0.157 4.0 22
7/32 0.219 40 0.025 0.187 16 0.189 4.8 12
1/4 0.250 40 0.025 0.218 16 0.221 5.7 2
9/32 0.281 40 0.025 0.249 16 0.257 6.4 F
5/16 0.313 40 0.025 0.281 16 0.290 7.2 L
3/8 0.375 40 0.025 0.343 16 0.348 8.9 S
7/16 0.438 40 0.025 0.406 16 0.413 10.4 Z
1/2 0.500 40 0.025 0.468 16 0.469 12.0 15/32

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