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Home / Products / Bolts / Hexagon Head Bolts / DIN 933:1987 Fully Threaded Grade A/B Hex Head Bolt

DIN 933:1987 Fully Threaded Grade A/B Hex Head Bolt

DIN 933:1987 Fully Threaded Grade A/B Hex Head Bolt is suitable for joints that require a long thread adjustment range. Its fully threaded body can cover different clamping thicknesses and works flexibly with nuts, washers, tapped holes, or mounting brackets.

The hex head allows tightening with common tools, while Grade A and Grade B options support different precision and assembly requirements. Compared with partially threaded bolts, this product is more suitable for short grip lengths, adjustable joints, spare parts, and positions requiring full-length thread engagement.

It is commonly used in general machinery, equipment housings, frame connections, cover fixing, and site installation work. Surface finishes can be selected for indoor, outdoor, or mildly corrosive environments, and strength classes can be matched to the project requirements.

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PREV：ASME/ANSI B18.2.3.5M:2006 Metric Hex Head Bolt NEXT：DIN 6914:1989 Structural High Strength Heavy Hex Bolt

 

Dimensions unit: mm

Thread size 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 Class 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
Class B Min. - - - - - 5.7 6.7 8.7 9.4 11.4 15.4 17.2 20.1 22
e Class 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
Class B Min. - - - - - 7.5 8.63 10.89 11.94 14.2 18.72 20.88 23.91 26.17
k Nominal 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
Class 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
Class 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 3.2 4 5 5.5 6 7 8 10 11 13 17 19 22 24
Class 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
Class B Min. - - - - - 6.64 7.64 9.64 10.57 12.57 16.57 18.48 21.16 23.16
Thousand pieces of steel weigh ≈kg  - - - - - - - - - - - - - -

Thread size 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 Class A Min. 25.3 28.2 30 33.6 - - - - - - - - -
Class 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 Class A Min. 30.14 33.53 35.72 39.98 - - - - - - - - -
Class 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 11.5 12.5 14 15 17 18.7 21 22.5 25 26 28 30 33
Class A Min. 11.28 12.28 13.78 14.78 - - - - - - - - -
Max. 11.72 12.72 14.22 15.22 - - - - - - - - -
Class 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 27 30 32 36 41 46 50 55 60 65 70 75 80
Class A Min. 26.67 29.67 31.61 35.38 - - - - - - - - -
Class B Min. 26.15 29.16 31 35 40 45 49 53.8 58.8 63.1 68.1 73.1 78.1
Thousand pieces of steel weigh ≈kg  - - - - - - - - - - - - -

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