Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-11

Current through Register 2024 Notice Reg. No. 45, November 8, 2024

Strength of U.S. Standard Bolts from 1/4" to 2" Diameter

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

Cal. Code Regs. Tit. 8, div. 1, ch. 4, subch. 4, app B, Plate B-11

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