Metric Socket Head Cap Screws

SOCKET DIMENSIONS - METRIC

SOCKET STRENGTH - METRIC

SOCKET HEAD CAP SCREW - METRIC

SizeDiameterHead DiameterHead HeightHexagon Socket SizeKey Engagement
M3-0.5 3.00 5.50 3.00 2.50 1.50
M4-0.7 4.00 7.00 4.00 3.00 2.00
M5-0.8 5.00 8.50 5.00 4.0 2.50
M6-1.0 6.00 10.00 6.00 5.00 3.00
M8-1.25 8.00 13.00 8.00 6.00 4.00
M10-1.50 10.00 16.00 10.00 8.00 5.00
M12-1.75 12.00 18.00 12.00 10.00 6.00
M14-2.0 14.00 21.00 14.00 12.00 7.00
M16-2.0 16 24.00 16.00 14.00 8.00
M18-          
M20-2.50 20.00 30.00 20.00 17.00 10.00
M22 24.00        
M24-3.0 24.00 36.00 24.00 19.00 12.00
M27          
M30-3.50 30.00 45.00 30.00 22.00 15.00
M36-4.0 36.00 54.00 36.00 27.00 18.00
M42-4.5 42.00 63.00 42.00 32.00 21.00
M48-5.0 48.00 72.00 48.00 36.00 24.00

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SOCKET SET SCREWS - METRIC

SizeKnurl & Cup Point DiameterFlat Point DiameterOval Point RadiusHalf Dog Point DiameterHalf Dog Point LengthHexagon Socket SizeKey Engagement
M1.6-0.35 0.80 0.80 1.600 0.80 0.53 0.70 0.60
M2-0.04 1.00 1.00 1.90 1.00 0.64 0.90 0.80
M2.5-0.45 1.25 1.50 2.28 1.50 1.25 1.30 1.10
M3-0.50 1.50 2.00 2.65 2.00 1.75 1.50 1.50
M4-0.70 2.00 2.50 3.80 2.50 1.20 2.00 1.80
M5-0.80 2.50 3.50 4.55 3.50 1.37 2.50 2.70
M6-1.00 3.00 4.00 5.30 4.00 1.74 3.00 3.00
M8-1.25 4.00 5.50 6.80 5.50 2.28 4.00 4.00
M10-1.50 5.00 7.00 8.30 7.00 2.82 5.00 5.00
M12-1.75 6.00 8.50 9.80 8.50 3.35 6.00 6.00
M16-2.00 8.00 12.00 12.80 12.00 4.40 8.00 8.00
M20-2.50 10.00 15.00 15.80 15.00 5.45 10.00 9.00

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SOCKET HEAD SHOULDER SCREW - METRIC

SizeShoulder DiameterHead DiameterHead HeightHexagon Socket SizeKey EngagementThread PitchThread Length
6.00 5.990 10.00 4.500 3.00   5.00-.08 9.750
8.00 7.987 13.00 5.500 4.00   6.00-1.0 11.25
10.00 9.987 16.00 7.00 5.00   8.00-1.25 13.25
12.00 11.984 18.00 8.00 6.00   10.0-1.50 16.40
16.00 15.984 24.00 11.00 8.00   12.0-1.75 18.40
20.00 19.980 30.00 14.00 10.00   16-2.00 22.40

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FLAT HEAD SOCKET CAP SCREW - METRIC

SizeHead DiameterHead HeightHexagon Socket SizeKey Engagement
M3-0.5 6.72 1.86 2.00 1.10
M4-0.7 8.96 2.48 2.50 1.50
M5-0.8 11.20 3.10 3.00 1.90
M6-1.0 13.44 3.72 4.00 2.20
M8-1.25 17.92 4.96 5.00 3.00
M10-1.50 22.40 6.20 6.00 3.60
M12-1.75 26.88 7.44 8.00 4.30
M16-2.00 33.60 8.80 10.00 4.80
M20-2.50 40.32 10.16 12.00 5.60

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BUTTON HEAD SOCKET CAP SCREW - METRIC

SizeHead DiameterHead HeightHexagon Socket SizeKey Engagement
M3-0.5 5.700 1.65 2.00 1.04
M4-0.7 7.60 2.20 2.50 1.30
M5-0.8 9.50 2.75 3.00 1.56
M6-1.0 10.50 3.30 4.00 2.08
M8-1.25 14.00 4.40 5.00 2.60
M10-1.50 17.50 5.50 6.00 3.12
M12-1.75 21.00 6.60 8.00 4.16

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METRIC SOCKET HEAD CAP SCREWS - MECHANICAL PROPERTIES

SizeThread Stress Area (mm^2)Yield Strength (kN)Tensile Strength (kN)Single Shear Strength Threads (kN)Single Shear Strength Body (kN)
M2-0.4 2.07 2.28 2.53 1.57 1.99
M3-0.5 5.03 5.53 6.14 3.81 4.7
M4-0.7 8.78 9.63 10.7 6.63 8.39
M5-0.8 14.2 15.6 17.3 10.7 13.4
M6-1.0 20.1 22.1 24.5 15.2 19.5
M8-1.25 36.6 40.1 44.6 27.7 34.8
M10-1.5 58 63.7 70.8 43.9 55
M12-1.75 84.3 92.7 103 63.9 79.1
M16-2.0 157 173 192 119 142
M20-2.5 245 269 299 185 222
M24-3.0 353 388 431 267 327
M30-3.5 561 616 684 424 506
M36-4.0 817 897 997 618 729

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METRIC SOCKET HEAD CAP SCREW -TORQUE VALUES

SizeStress Area (mm^2)Clamp Load (lbs)Torque K=.2 (Nm)Clamp Load(lbs)Torque K=.2
M2-.04 2.07 1.51 0.6 340 85 In-Oz
M3-0.5 5.03 3.66 2.2 823 19 In-lbs
M4-0.7 8.78 6.39 5.11 1437 45 In-lbs
M5-0.8 14.2 10.4 10.4 2338 92 In-lbs
M6-1.0 20.1 14.6 17.5 3282 13 Ft-lbs
M8-1.25 36.6 26.6 42.6 5980 31
M10-1.5 58 42.2 84 9487 62
M12-1.75 84.3 61.4 147 13800 108
M16-2.0 157 114 365 25630 269
M20-2.5 245 179 716 40240 528
M24-3.0 353 257 1234 57775 910
M30-3.5 561 408 2448 91720 1806
M36-4.0 817 594 4277 133540 3155

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