Other - Bolts Welds - Class 4.6 Hexagon head bolts - Bolt resistances - Non-preloaded-355

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Diameter of bolt	Tensile stress area	Tension resistance	Shear resistance		Bolts in tension
Diameter of bolt	Tensile stress area	Tension resistance	Single shear	Double shear	Min. thickness for punching shear
d	A_s	F_t,Rd	F_v,Rd	2 x F_v,Rd	t_min
mm	mm²	kN	kN	kN	mm
12	84.3	24.3	16.2	32.4	1.9
16	157	45.2	30.1	60.3	2.7
20	245	70.6	47.0	94.1	3.4
24	353	102	67.8	136	4.1
30	561	162	108	215	5.1

Diameter of bolt	Minimum				Bearing resistance (kN)
Diameter of bolt	End distance	Edge distance	Pitch	Gauge	Bearing resistance (kN)
d	e₁	e₂	p₁	p₂	Thickness in mm of ply
mm	mm	mm	mm	mm	5	6	7	8	9	10	12	15	20	25	30
12	25	20	35	40	30.3	36.3	42.4	48.4	54.5	60.5	72.6	90.8	121	151	182
16	35	25	50	50	42.7	51.2	59.7	68.3	76.8	85.4	102	128	171	213	256
20	40	30	60	60	48.3	57.9	67.6	77.2	86.9	96.5	116	145	193	241	290
24	50	35	70	70	59.8	71.8	83.8	95.8	108	120	144	180	239	299	359
30	60	45	85	90	72.4	86.9	101	116	130	145	174	217	290	362	434

For Class 8.8 and 10.9 M12 bolts the design shear resistance F_v,Rd has been calculated as 0.85 times the value given in BS EN 1993-1-8, Table 3.4 (§3.6.1(5))

See Clause 3.7(1) of BS EN 1993-1-8: 2005 for calculation of the design resistance of a group of fasteners

Values of bearing resistance in bold are less than the single shear resistance of the bolt

Values of bearing resistance in italic are greater than the double shear resistance of the bolt

Bearing values assume standard clearance holes

If oversize or short slotted holes are used, bearing values should be multiplied by 0.8

If long slotted or kidney shaped holes are used, bearing values should be multiplied by 0.6

In single lap joints with only one bolt row, the design bearing resistance for each bolt should be limited to 1.5f_u d t / γ_M2

Design Data

Long products

Flat products

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Other - Bolts Welds - Class 4.6 Hexagon head bolts - Bolt resistances - Non-preloaded-355