California Code of Regulations
Title 8 - Industrial Relations
Division 1 - Department of Industrial Relations
Chapter 4 - Division of Industrial Safety
Subchapter 4 - Construction Safety Orders
Appendix B - Handy Construction Data; Facts; and Information
Plate B-11 - Strength of U.S. Standard Bolts from 1/4" to 2" Diameter

Universal Citation: 8 CA Code of Regs Plate B-11

Current through Register 2024 Notice Reg. No. 38, September 20, 2024

*BOLT*		*AREAS*	*TENSILE STRENGTH, LBS.*			*SHEARING STRENGTH, LBS.*			*SHEARING STRENGTH, LBS.*
									*FULL BOLT*		*BOTTOM OF THREAD*
*Diameter of Bolts, Inches*		*Number of Threads per Inch*		*Full Bolt, Sq. In.*	*Bottom of T hread, Sq. In.*	*At 10,000 Lbs. per Sq. In.*	*At 12,500 Lbs. per Sq. In.*	*At 17,500 Lbs. per Sq. In.*	*At 7,500 Lbs. per Sq. In.*	*At 10,000 Lbs. per Sq. In.*	*At 7,500 Lbs. per Sq. In.*	*At 10,000 Lbs. per Sq. In.*
	1/4		20	0.049	0.027	270	340	470	380	490	200	270
	5/16		18	0.077	0.045	450	570	790	580	770	340	450
	3/8		16	0.110	0.068	680	850	1.190	830	1,100	510	680
	7/16		14	0.150	0.093	930	1,170	1,630	1,130	1,500	700	930
	1/2		13	0.196	0.126	1,260	1,570	2,200	1,470	1,960	940	1,260
	9/16		12	0.248	0.162	1,620	2,030	2,840	1,860	2,480	1,220	1,620
	5/8		11	0.307	0.202	2,020	2,520	3,530	2,300	3,070	1,510	2,020
	3/4		10	0.442	0.302	3,020	3,770	5,290	3,310	4,420	2,270	3,020
	7/8		9	0.601	0.419	4,190	5,240	7,340	4,510	6,010	3,150	4,190
	1		8	0.785	0.551	5,510	6,890	9,640	5,890	7,850	4,130	5,510
	1 1/8		7	0.994	0.693	6,990	8,660	12,130	7,450	9,940	5,200	6,930
	1 1/4		7	1.227	0.890	8,890	11,120	15,570	9,200	12,270	6,670	8,900
	1 3/8		6	1.435	1.054	10,540	13,180	18,450	11,140	14,850	7,910	10,540
	1 1/2		6	1.767	1.294	12,940	16,170	22,640	13,250	17,670	9,700	12,940
	1 5/8		5 1/2	2.074	1.515	15,150	18,940	26,510	15,550	20,740	11,360	15,150
	1 3/4		5	2.405	1.745	17,450	21,800	30,520	18,040	24,050	13,080	17,440
	1 7/8		5	2.761	2.049	20,490	25,610	35,860	20,710	27,610	15,370	20,490
	2		4 1/2	3.142	2.300	23,000	28,750	40,500	23,560	31,420	17,250	23,000

1. Editorial correction of Diameter of Bolts second entry (Register 95, No. 21).

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