Bolt Loading Capacities HSFG Non

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

Bolt Loading Capacities Table

High Strength Friction Grip (HSFG) Bolts

Non - Preloaded HSFG Bolts
General Grade HSFG Bolts Material S355

Diameter of Bolt mm	Tensile Stress Area A_t mm²	Tension Capacity		Shear Capacity		Bearing Capacity in kN (Minimum of P_bb and P_bs) End distance equal to 2 x bolt diameter Thickness in mm of ply passed through
Diameter of Bolt mm	Tensile Stress Area A_t mm²	Nominal 0.8 A_t p_t P nom kN	Exact A_t p_t P_t kN	Single Shear P_s kN	Double Shear 2 P_s kN	5	6	7	8	9	10	12	15	20	25	30
12	84.3	39.8	49.7	33.7	67.4	33.0	39.6	46.2	52.8	59.4	66.0	79.2	99.0	132	165	198
16	157	74.1	92.6	62.8	126	44.0	52.8	61.6	70.4	79.2	88.0	106	132	176	220	264
20	245	116	145	98.0	196	55.0	66.0	77.0	88.0	99.0	110	132	165	220	275	330
22	303	143	179	121	242	60.5	72.6	84.7	96.8	109	121	145	182	242	303	363
24	353	167	208	141	282	66.0	79.2	92.4	106	119	132	158	198	264	330	396
27	459	189	236	161	321	74.3	89.1	104	119	134	149	178	223	297	371	446
30	561	231	289	196	393	82.5	99.0	116	132	149	165	198	248	330	413	495

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.