Experts in the development and manufacture of precision fasteners,
components and systems, specializing in thin sheet attachment solutions.

Thread Code Comparison Chart


Common Industry Standard Alternate industry Standard PennEngineering Thread Code ATLAS SpinTite® Thread Code ATLAS MaxTite® Thread Code
#0-80 .060 – 80 080
#1 – 64 .073 – 64 164
#1 – 72 .073 – 72 172
#2 – 56 .086 – 56 256
#2 – 64 .086 – 64 264
#3 – 48 .099 – 48 348
#3 – 56 .099 – 56 356
#4 – 40 .112 – 40 440 440 4
#4 – 48 .112 – 48 448 448 448
#5 – 40 .125 – 40 540 540 5
#5 – 44 .125 – 44 544 544 544
#6 – 32 .138 – 32 632 632 6
#6 – 40 .138 – 40 640 640 640
#8 – 32 .164 – 32 832 832 8
#8 – 36 .164 – 36 836 836 836
#10 – 24 .190 – 24 024 1024 1024
#10 – 32 .190 – 32 032 1032 10
#12 – 24 .216 – 24 1224 1224 12
#12 – 28 .216 – 28 1228 1228 1228
1/4 – 20 .2500 – 20 0420 420 25
1/4 – 28 .2500 – 28 0428 428 2528
5/16 – 18 .3125 – 18 0518 518 31
5/16 – 24 .3125 – 24 0524 524 3124
3/8 – 16 .3750 – 16 0616 616 37
3/8 – 24 .3750 – 24 0624 624 3724
7/16 – 14 .4375 – 14 0714 714 43
7/16 – 20 .4375 – 20 0720 720 4320
1/2 – 13 .5000 – 13 0813 813 50
1/2 – 20 .5000 – 20 0820 820 5020
5/8 – 11 .6250 – 11 1011 1011
5/8 – 18 .6250 – 18 1018 1018
3/4 – 10 .7500 – 10 1210 1210
3/4 – 16 .7500 – 16 1216 1216
M1.6 x 0.35 M1.6
M2 x 0.4 M2
M2.5 x 0.45 M2.5
M3 x 0.5 M3 350 M3
M3.5 x 0.6 M3.5 3560 M3.5
M4 x 0.7 M4 470 M4
M5 x 0.8 M5 580 M5
M6 x 1 M6 610 M6
M8 x 1.25 M8 8125 M8
M8 x 1 Special 810 Special
M10 x 1.5 M10 1015 M10
M10 x 1.25 Special 10125 Special
M10 x 1 Special 1010 Special
M12 x 1.75 M12 12175 M12
M14 x 2 M14 1420 M14
M16 x 2 M16 1620 M16

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