Hexagon head screws

  • Brand:

    T,TGR,XDM,OEM as requirement
  • Brief:

  • Surface:

    HDG,plain,black,galvanized,yellow zinc,nickel plated,dacromet,etc
  • Material:

    stainless steel304,316,316L,317,317L,carbon steel,B7,etc
  • Size:

    M1.6-M64,1/4-6,Custom-made
  • MOQ:

    According to size
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product details

Hex Head Cap Screws feature hexagon-shaped heads for socket or wrench tightening.

Screw Thread d M1.6 M2 M2.5 M3 (M3.5) M4 M5 M6 (M7) M8 M10 M12 (M14) M16
P Pitch 0.35 0.4 0.45 0.5 0.6 0.7 0.8 1 1 1.25 1.5 1.75 2 2
a max 1.05 1.2 1.35 1.5 1.8 2.1 2.4 3 3 3.75 4.5 5.25 6 6
c min 0.1 0.1 0.1 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.2
max 0.25 0.25 0.25 0.4 0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.8
da max 2 2.6 3.1 3.6 4.1 4.7 5.7 6.8 7.8 9.2 11.2 13.7 15.7 17.7
dw Grade A min 2.4 3.2 4.1 4.6 5.1 5.9 6.9 8.9 9.6 11.6 15.6 17.4 20.5 22.5
Grade B min - - - - - 5.7 6.7 8.7 9.4 11.4 15.4 17.2 20.1 22
e Grade A min 3.41 4.32 5.45 6.01 6.58 7.66 8.79 11.05 12.12 14.38 18.9 21.1 24.49 26.75
Grade B min - - - - - 7.5 8.63 10.89 11.94 14.2 18.72 20.88 23.91 26.17
k Nominal Size 1.1 1.4 1.7 2 2.4 2.8 3.5 4 4.8 5.3 6.4 7.5 8.8 10
Grade A min 0.98 1.28 1.58 1.88 2.28 2.68 3.35 3.85 4.65 5.15 6.22 7.32 8.62 9.82
max 1.22 1.52 1.82 2.12 2.52 2.92 3.65 4.15 4.95 5.45 6.56 7.68 8.98 10.18
Grade B min - - - - - 2.6 3.26 3.76 4.56 5.06 6.11 7.21 8.51 9.71
max - - - - - 3 3.74 4.24 5.04 5.54 6.69 7.79 9.09 10.29
k1 min 0.7 0.9 1.1 1.3 1.6 1.9 2.28 2.63 3.19 3.54 4.28 5.05 5.96 6.8
r min 0.1 0.1 0.1 0.1 0.1 0.2 0.2 0.25 0.25 0.4 0.4 0.6 0.6 0.6
s max=nominal size 3.2 4 5 5.5 6 7 8 10 11 13 17 19 22 24
Grade A min 3.02 3.82 4.82 5.32 5.82 6.78 7.78 9.78 10.73 12.73 16.73 18.67 21.67 23.67
Grade B min - - - - - 6.64 7.64 9.64 10.57 12.57 16.57 18.48 21.16 23.16
Weight of per 1000 steel products(≈kg) - - - - - - - - - - - - - -
Screw Thread d (M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39) M42 (M45) M48 (M52) -
P Pitch 2.5 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5 5 -
a max 7.5 7.5 7.5 9 9 10.5 10.5 12 12 13.5 13.5 15 15 -
c min 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3 0.3 0.3 0.3 0.3 -
max 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1 1 1 1 1 -
da max 20.2 22.4 24.4 26.4 30.4 33.4 36.4 39.4 42.4 45.6 48.6 52.6 56.6 -
dw Grade A min 25.3 28.2 30 33.6 - - - - - - - - - -
Grade B min 24.8 27.7 29.5 33.2 38 42.7 46.5 51.1 55.9 59.9 64.7 69.4 74.2 -
e Grade A min 30.14 33.53 35.72 39.98 - - - - - - - - - -
Grade B min 29.56 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44 71.3 76.95 82.6 88.25 -
k Nominal Size 11.5 12.5 14 15 17 18.7 21 22.5 25 26 28 30 33 -
Grade A min 11.28 12.28 13.78 14.78 - - - - - - - - - -
max 11.72 12.72 14.22 15.22 - - - - - - - - - -
Grade B min 11.15 12.15 13.65 14.65 16.65 18.28 20.58 22.08 24.58 25.58 27.58 29.58 32.5 -
max 11.85 12.85 14.35 15.35 17.35 19.12 21.42 22.92 25.42 26.42 28.42 30.42 33.5 -
k1 min 7.8 8.5 9.6 10.3 11.7 12.8 14.4 15.5 17.2 17.9 19.3 20.9 22.8 -
r min 0.6 0.8 0.8 0.8 1 1 1 1 1 1.2 1.2 1.6 1.6 -
s max=nominal size 27 30 32 36 41 46 50 55 60 65 70 75 80 -
Grade A min 26.67 29.67 31.61 35.38 - - - - - - - - - -
Grade B min 26.15 29.16 31 35 40 45 49 53.8 58.8 63.1 68.1 73.1 78.1 -
Weight of per 1000 steel products(≈kg) - - - - - - - - - - - - - -
This standard specifies requirements for M1,6 to M52 hexagon head screws threaded up to the head,assigned to product grade A,for sizes up to M24 and lengths not exceeding 10d or 150 mm,and to product grade B for sizes greater than M24 or lengths exceeding 10 d or 150 mm.
For thread sizes not greater than M4,also permitted without chamfered end
Screw Thread d 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 1-1/8 1-1/4 1-3/8 1-1/2
d max 0.26 0.324 0.388 0.452 0.515 0.642 0.768 0.895 1.022 1.149 1.277 1.404 1.531
min 0.237 0.298 0.36 0.421 0.482 0.605 0.729 0.852 0.976 1.098 1.223 1.345 1.47
s max 0.438 0.5 0.562 0.625 0.75 0.938 1.125 1.312 1.5 1.688 1.875 2.062 2.25
min 0.425 0.484 0.544 0.603 0.725 0.905 1.088 1.269 1.45 1.631 1.812 1.994 2.175
k max 0.188 0.235 0.268 0.316 0.364 0.444 0.524 0.604 0.7 0.78 0.876 0.94 1.036
min 0.15 0.195 0.226 0.272 0.302 0.378 0.455 0.531 0.591 0.658 0.749 0.81 0.902
Screw Thread d 1-5/8 1-3/4 1-7/8 2 2-1/4 2-1/2 2-3/4 3 3-1/4 3-1/2 3-3/4 4 -
d max 1.658 1.785 1.912 2.039 2.305 2.559 2.827 3.081 3.335 3.589 3.858 4.111 -
min 1.591 1.716 1.839 1.964 2.214 2.461 2.711 2.961 3.21 3.461 3.726 3.975 -
s max 2.438 2.625 2.812 3 3.375 3.75 4.125 4.5 4.875 5.25 5.625 6 -
min 2.356 2.538 2.719 2.9 3.262 3.625 3.988 4.35 4.712 5.075 5.437 5.8 -
k max 1.116 1.196 1.276 1.388 1.548 1.708 1.869 2.06 2.251 2.38 2.572 2.764 -
min 0.978 1.054 1.13 1.175 1.327 1.479 1.632 1.815 1.936 2.057 2.241 2.424 -