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Bolt Loading Capacities Ordinary Bolts. Grade 4.6 Bolts

Engineering ISO Metric Hardware Design Data
Engineering ANSI Hardware Design Data

See Explanatory notes given below table. BS 5950-1: 2000 BS 4190: 2001

Bolt Loading Capacities. Non-preloaded Ordinary Bolts. Grade 4.6 Bolts per. S355

Diameter of Bolt	Tensile Stress Area At	Tension Capacity		Shear Capacity		Bearing Capacity in kN (Minimum of Pbb and Pbs) End distance equal to 2 x bolt diameter Thickness in mm of material passed through
		Nominal 0.8 At pt	Exact At pt	Single Shear	Double Shear
		Pnom	Pt	Ps	2 Ps
mm	mm²	kN	kN	kN	kN	5	6	7	8	9	10	12	15	20	25	30
12	84.3	16.2	20.2	13.5	27.0	27.6	33.1	38.6	44.2	49.7	55.2	66.2	82.8	110	138	166
16	157	30.1	37.7	25.1	50.2	36.8	44.2	51.5	58.9	66.2	73.6	88.3	110	147	184	221
20	245	47.0	58.8	39.2	78.4	46.0	55.2	64.4	73.6	82.8	92.0	110	138	184	230	276
22	303	58.2	72.7	48.5	97.0	50.6	60.7	70.8	81.0	91.1	101	121	152	202	253	304
24	353	67.8	84.7	56.5	113	55.2	66.2	77.3	88.3	99.4	110	132	166	221	276	331
27	459	88.1	110	73.4	147	62.1	74.5	86.9	99.4	112	124	149	186	248	311	373
30	561	108	135	89.8	180	69.0	82.8	96.6	110	124	138	166	207	276	345	414

Non-preloaded Ordinary Bolts

• Values in bold are less than the single shear capacity of the bolt.
• Values in italic are greater than the double shear capacity of the bolt.
• Bearing values assume standard clearance holes.
• If oversize or short slotted holes are used, bearing values should be multiplied by 0.7.
• If long slotted or kidney shaped holes are used, bearing values should be multiplied by 0.5.
• If appropriate, shear capacity must be reduced for large packings, large grip lengths and long joints.

The tensile stress area (A_t ) is obtained from standards

The tension capacity of the bolt is given by:

P_nom = 0.8p_tA_t Nominal

P_t = p_tA_t Exact

Where:

p_t is the tension strength of the bolt.

The shear capacity of the bolt is given by

P_S = p_s A_s

where:

p_s is the shear strength of the bolt
A_s is the shear area of the bolt.

In the table, As has been taken as equal to At .

The shear capacity given in the tables must be reduced for large packings, large grip lengths, kidney shaped slots or long joints when applicable.

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