SPECIAL THREADS

Dimensional Charts relating toPg DIN 4043, METRIC ELECTRICAL,BUTTRESS,KNUCKLE DIN 405andKNUCKLE DIN 20400Threads.

Dimensions shown are in mm, if you wish to convert to Inches, please use ouruniversal converter.

PG THREAD DIMENSIONS

The standard, codified by the Deutsches Institut für Normung (DIN, German Institute for Standardization),
is DIN 40430. Panzergewinde sizes are named with the prefix PG plus a nominal
number which approximately corresponds to the maximum cable diameter (in millimeters) that can be passed through the conduit.

The thread is used predomantily to join pieces of electrical conduit and cable glands.

Because the walls of the conduit are usually relatively thin, the thread depth should not be very large.
Thus a thread angle of 80° is used.
The Verband der Elektrotechnik, Elektronik und Informationstechnik (VDE)
(which began as a trade association for standardization in electrical engineering)
originally standardized (and named) the thread for use with conduit and cable glands that were made of steel,
although today the thread is used with both steel (typically plated with combinations of nickel, zinc,
or tin to resist rusting) and polyvinyl chloride (PVC).

Beginning in 2000, the VDE standard for cable glands (VDE 0619) was formally replaced by EN 50262.
After a transitional period of several years during which it could still be used,
it was replaced in 2003 by a final metric fine thread with 1.5mm (0.0591in) pitch.
Similarly, conduit threads were replaced by EN 60423.

PG Thread Dimensions
METRIC Pg ELECTRICAL THREAD DIMENSIONS - DIN 4043
NOMINAL
SIZE
THREAD
FORM
MAJOR
DIAMETER
PITCHTHREADS
PER INCH
PITCH
DIAMETER
MINOR DIAMETER
(MALE THREAD)
THREAD
HEIGHT
RADIUSTAPPING DRILL
DIAMETER
mmmmmm
d=Dptpid2=D2d1H1 mmmm
Pg7Pg12.51.272011.8911.280.610.1411.4
Pg9Pg15.21.4111814.53 13.860.670.1514
Pg11Pg18.61.4111817.9317.260.670.1517.25
Pg13.5Pg20.4 1.4111819.7319.060.670.1519
Pg16Pg22.51.4111821.8321.160.670.1521.25
Pg21Pg28.31.5881627.5426.780.760.1726.75
Pg29Pg371.5881636.2435.480.76 0.1735.5
Pg36Pg471.5881646.2445.480.760.1745.5
Pg42Pg541.58816 53.2452.480.760.1752.5
Pg48Pg59.31.5881658.5457.780.760.1757.75

METRIC ELECTRICAL THREAD DIMENSIONS

Metric Electrical Thread DimensionsMetric Electrical Thread Dimensions

BUTTRESS THREAD DIMENSIONS

The buttress thread form, also known as the breech-lock thread form, refers to two different thread profiles.

One is a type of leadscrew and the other is a type of hydraulic sealing thread form.
The leadscrew type is often used in machinery and the sealing type is often used in oil fields.

In oil field tubing, buttress thread is a pipe thread form designed to provide a tight hydraulic seal.

The thread form is similar to that of Acme thread the force is transmitted almost parallel to the axis and
thread is about the same strength as standard v threads.

Buttress Thread Dimensions
METRIC ELECTRICAL THREAD DIMENSIONS - EN 60423 TABLE 1
NOMINAL
SIZE
THREAD
FORM
TYPE
MAJOR
DIAMETER
PITCHRADIUSPITCH
DIAMETER
MINOR
DIAMETER
MALE
THREAD
MINOR
DIAMETER
FEMALE
THREAD
THREAD
HEIGHT
(MALE
THREAD)
THREAD
HEIGHT
(FEMALE
THREAD)
TAPPING
DRILL
DIAMETER
(mm)
CLEARANCE
DRILL
DIAMETER
(mm)
ISO MFTyped=DPRd2=D2d3D1h3H1
12x1.5M 12.001.500.21711.02610.16010.3760.9200.81210.50 12.500
16x1.5M16.001.500.21715.02614.16014.376 0.9200.81214.5016.500
20x1.5M20.001.500.217 19.02618.16018.3760.9200.812 18.5020.500
25x1.5M25.001.500.21724.02623.160 23.3760.9200.81223.50 25.500
32x1.5M32.001.500.21731.02630.16030.3760.920 0.81230.5032.500
40x1.5M40.001.500.21739.026 38.16038.3760.9200.812 38.5040.500
50x1.5M50.001.500.21749.02648.16048.376 0.9200.81248.5050.500
63x1.5M63.001.500.217 62.02661.16061.3760.9200.812 61.5063.500
75x1.5M75.001.500.21774.02673.160 73.3760.9200.81273.50 75.500
80x2M80.002.00 78.0080.50
85x2M 85.002.0083.00 85.50
90x2M90.002.00 88.0090.50
100x2M 100.002.0098.00100.50
100x3M100.003.00 97.00100.50
110x3M110.003.00107.00 110.50
BUTTRESS COARSE THREAD - DIN 513 DIMENSIONS
NOMINAL DIAMETEROUTSIDE DIAMETERPITCHBOLT THREAD
MINOR DIAMETER
TAPPING SIZE
DRILL
mmmmmmmm
S 10 x 210.002.006,5287,000
S 12 x 312.00 3.006,7947,500
S 14 x 314.003.008,7949,500
S 16 x 416.004.009,05810,000
S 18 x 418.00 4.0011,05812,000
S 20 x 420.004.0013,05814,000
S 22 x 522.005.0013,32214,500
S 24 x 5 24.005.0015,32216,500
S 26 x 526.005.0017,32218,500
S 28 x 528.005.0019,32220,500
S 30 x 630.006.0019,58621,000
S 32 x 632.006.0021,58623,000
S 34 x 634.006.0023,58625,000
S 36 x 636.006.0025,58627,000
S 38 x 738.007.0025,85227,500
S 40 x 740.007.0027,825 29,500
S 42 x 742.007.0039,82531,500
S 44 x 744.007.0031,82533,500
S 46 x 846.008.00 32,11634,000
S 48 x 848.008.0034,11636,000
S 50 x 850.008.0036,11638,000
S 52 x 852.00 8.0038,11640,000
S 55 x 955.009.0039,38041,500
S 60 x 960.009.0044,38046,500
S 65 x 10 65.0010.0047,64450,000
S 70 x 1070.0010.0052,64455,000
S 75 x 1075.0010.0057,64460,00
S 80 x 1080.0010.0062,64465,000
S 85 x 1285.0012.0064,17467,000
S 90 x 1290.0012.0069,17472,000
S 95 x 1295.0012.0074,17477,000
S 100 x 12100.0012.0079,17482,000

KNUCKLE THREAD DIMENSIONS

Knuckle threads are insensitive to dirt and damage due to their round shape.
They can be used as fastening screw threads in clutch or brake spindles of railway cars as well as for large valves and gates.

These threads are also used in electric bulb and bottles etc.

Knuckle thread Dimensions - DIN405
KNUCKLE THREAD DIN 405 DIMENSIONS
THREAD SIZENOMINAL DIAMETERBOLT THREAD
MINOR DIAMETER
NUT THREAD
MINOR DIAMETER
PITCHTPI
mmmmmm
Rd 8 x 1/10"8,2545,4605,7142,54010
Rd 9 x 1/10"9,2546,4606,7142,540 10
Rd 10 x 1/10"10,2547,4607,7142,54010
Rd 11 x 1/10"11,2548,4608,7142,54010
Rd 12 x 1/10"12,2549,4609,7142,54010
Rd 14 x 1/8"14,31810,82511,1423,1758
Rd 16 x 1/8" 16,3184,16612,8253,1758
Rd 18 x 1/8"18,31814,82515,1423,1758
Rd 20 x 1/8"20,31816,825 17,1423,1758
Rd 22 x 1/8"22,31818,82519,1423,1758
Rd 24 x 1/8"24,31820,82521,1423,1758
Rd 28 x 1/8"28,31824,82525,1423,1758
Rd 30 x 1/8"30,31826,82527,1423,1758
Rd 32 x 1/8"32,31828,82529,1423,1758
Rd 34 x 1/8"34,31830,82531,1423,1758
Rd 36 x 1/8" 36,31832,82533,1423,1758
Rd 38 x 1/8"38,31834,82535,1423,1758
Rd 40 x 1/16"40,42335,767 36,1904,2336
Rd 42 x 1/16"42,42337,76738,1904,2336
Rd 44 x 1/16"44,42339,76740,1904,233 6
Rd 46 x 1/16"46,42341,76742,1904,2336
Rd 48 x 1/16"48,42343,76744,1904,2336
Rd 50 x 1/16"50,42345,76746,1904,2336
Rd 52 x 1/16"52,42347,76748,1004,2336
Rd 55 x 1/16" 55,42350,76751,1904,2336
Rd 58 x 1/16"58,42353,76754,1904,2336
Rd 60 x 1/16"60,42355,767 56,1904,2336
Rd 62 x 1/16"62,42357,76758,1904,2336
Rd 65 x 1/16"65,42360,76761,1904,233 6
Rd 68 x 1/16"68,42363,76764,1904,2336
Rd 70 x 1/16"70,42365,76766,1904,2336
Rd 72 x 1/16"72,42367,76768,1904,2336
Rd 75 x 1/16"75,42370,76771,1904,2336
Rd 78 x 1/16" 78,42373,76774,1904,2336
Rd 80 x 1/16"80,42375,76776,1904,2336
Rd 82 x 1/16"82,42377,767 78,1904,2336
Rd 85 x 1/16"85,42380,76781,1904,2336
Rd 88 x 1/16"88,42383,76784,1904,233 6
Rd 90 x 1/16"90,42385,76786,1904,2336
Rd 92 x 1/16"92,42387,76788,1904,2336
Rd 95 x 1/16"95,42390,76791,1904,2336
Rd 98 x 1/16"98,42393,76794,1904,2336
Rd 100 x 1/6" 100,42395,76796,1904,2336
Rd 105 x 1/4"105,63598,65099,2856,3504
Rd 110 x 1/4"110,635103,650 104,2856,3504
Rd 115 x 1/4"115,635108,650109,2856,3504
Rd 120 x 1/4"120,635113,650114,285 6,3504
Rd 120 x 1/4"120,635113,650114,2856,3504
Rd 125 x 1/4"125,635118,650119,2856,3504
Rd 130 x 1/4"130,635123,650124,2856,3504
Rd 135 x 1/4"135,635128,650129,2856,3504
Rd 140 x 1/4"140,635133,650134,2856,3504
Rd 145 x 1/4"145,635138,650139,2856,3504
Rd 150 x 1/4" 150,635143,650144,2856,3504
Rd 155 x 1/4"155,635148,650149,2856,3504
Rd 160 x 1/4"160,635 153,650154,2856,3504
Rd 165 x 1/4"165,635158,650159,2856,3504
Rd 170 x 1/4"170,635163,650164,285 6,3504
Rd 175 x 1/4"175,635168,650169,2856,3504
Rd 180 x 1/4"180,635173,650174,2856,350 4
Rd 185 x 1/4"185,635178,650179,2856,3504
Rd 190 x 1/4"190,635183,650184,2856,3504
Rd 195 x 1/4"195,635188,650189,2856,3504
Rd 200 x 1/4"200,635193,650194,2856,3504
Knuckle thread Dimensions - DIN20400
KNUCKLE THREAD DIN 20400 DIMENSIONS
NOMINAL SIZEMAJOR DIAMETERPITCH DIAMETERMINOR DIAMETERTAPPING DRILL
MINMAXMINMAXMIN MAX
Rd10x310.310.548.58.7477.247,000
Rd12x312.312.541110.7499.249,000
Rd14x314.314.541312.741111.2411,000
Rd16x416.416.721414.321212.3212,000
Rd18x418.418.721616.321414.3214,000
Rd02x420.420.721818.321616.3216,000
Rd22x422.422.722020.321818.3218,000
Rd25x425.425.722323.322121.3221,000
Rd28x428.428.722626.322424.3224,000
Rd32x432.432.723030.322828.3228,000
Rd36x5 36.536.93433.93131.431,000
Rd40x540.540.93837.93535.435,000
Rd42x542.5 42.94039.93737.437,000
Rd45x545.545.94342.94040.440,000
Rd48x548.548.9 4645.94343.443,000
Rd50x550.550.94847.94545.445,000
Rd53x553.553.951 50.94848.448,000
Rd56x556.556.95453.95151.451,000
Rd60x660.661.0857 57.485454.4854,000
Rd63x663.664.086060.485757.4857,000
Rd67x667.668.086464.48 6161.4861,000
Rd70x670471.086767.485464.4864,000
Rd75x675.676.087272.48 6969.4869,000
Rd80x680.681.087777.487474.4874,000
Rd85x685.686.088282.4879 79.4879,000
Rd90x890.891.448686.648282.6482,000
Rd95x895.896.449191.6487 87.6487,000
Rd100x8101101.49696.649292.6492,000
Rd106x8107107.4102102.698 98.6498,000
Rd112x8113113.4108108.6104104.6104,000
Rd118x8119119.4114114.6110 110.6110,000
Rd125x8126126.4121121.6117117.6117,000
Rd132x10133133.8127127.8122 122.8122,000
Rd140x10141141.8135135.8130130.8130,000
Rd150x10151151.8145145.8140 140.8140,000
Rd160x10161161.8155155.8150150.8150,000
Rd170x10171171.8165165.8160 160.8160,000
Rd180x12181182.2174176168169168,000
Rd190x12191192.2184185178 179178,000
Rd200x12201202.16194195188189188,000
Rd212x12213214.2206207200 201200,000
Rd224x12225226.2218219212213212,000
Rd236x16238238.9228229.3220221.3 220,000
Rd250x16252252.9242243.3234235.3234,000
Rd265x16267267.9257258.3249 250.3249,000
Rd280x16282282.9272273.3264265.3264,000
Rd300x16302302.9292293.3284 285.3284,000