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Unit:inch

Double End Studs

IFI 136 - 2006

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美标IFI 136 - 2006 IFI136 136IFI Double End Studs
Thread Size
1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2
PP
ds 2 Type max
min
3Type max
min
b min （L≤6 ）
（L＞6）
L1 max （L≤6 ）
（L＞6）
20 18 16 14 13 12 11 10 9 8 7 7 6 6
0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500 1.3750 1.5000
0.2127 0.2712 0.3287 0.3850 0.4435 0.5016 0.5589 0.6773 0.7946 0.9100 1.0228 1.1476 1.2563 1.3812
0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500 1.3750 1.5000
0.2408 0.3026 0.3643 0.4258 0.4876 0.5495 0.6113 0.7353 0.8592 0.9830 1.1064 1.2314 1.3544 1.4794
0.750 0.875 1.000 1.125 1.250 1.375 1.500 1.75 2.000 2.250 2.500 2.750 3.000 3.250
1.000 1.125 1.250 1.375 1.500 1.625 1.750 2.000 2.250 2.500 2.750 3.000 3.250 3.500
0.875 1.031 1.188 1.344 1.500 1.656 1.812 2.125 2.438 2.750 3.062 3.375 3.688 4.000
1.125 1.281 1.438 1.594 1.750 1.906 2.062 2.375 2.688 3.000 3.312 3.625 3.928 4.250
①,Type 1 studs shall have an unfinished body with no specified body diameter tolerances；
Type 2 studs shall have a maximum body diameter equal to basic major diameter of the thread, and a minimum body diameter equal to the rolled thread blank size.
Type 3 studs shall have a maximum body diameter equal to basic major diameter of the thread, and a minimum body diameter equal to the specified minimum major diameter of the thread.
Type 4 studs shall have body diameter tolerances as specified by the purchaser (milled or ground body).
②,When flat and chamfered, the end shall be chamfered from a diameter approximately 0.016 in. below the minor diameter of the thread to produce a length of chamfer or incomplete thread not to exceed two times the thread pitch.

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