Dowel Size Information

Dimension charts for Metric and Inch Dowel Pins.

Dimensions shown are in Inches and mm if you wish to convert them, please use our universal converter.

DOWEL PINS - METRIC

DOWEL PIN DIMENSIONS - METRIC
NOMINAL SIZE	PIN DIAMETER (A)		POINT DIAMETER (B)		CROWN HEIGHT (C)	CROWN RADIUS (R)	CALCULATED SINGLE SHEAR STRENGTH		RECOMMENDED HOLE SIZE
	MAX	MIN	MAX	MIN	MAX	MIN	kN	POUNDS	MAX	MIN
3	3.008	3.003	2.9	2.6	0.8	0.3	7.4	1,670	3.000	2.987
4	4.009	4.004	3.9	3.6	0.9	0.4	13.2	2,965	4.000	3.987
5	5.009	5.004	4.9	4.6	1.0	0.4	20.6	4,635	5.000	4.987
6	6.010	6.004	5.8	5.4	1.1	0.4	29.7	6,650	6.000	5.987
8	8.012	8.006	7.8	7.4	1.3	0.5	52.5	11,850	8.000	7.987
10	10.012	10.006	9.8	9.4	1.4	0.6	82.5	18,550	10.000	9.987
12	12.013	12.007	11.8	11.4	1.6	0.6	119.0	26,700	12.000	11.985
16	16.013	16.007	15.8	15.3	1.8	0.8	211.0	47,450	16.000	15.985
20	20.014	20.008	19.8	19.3	2.0	0.8	330.0	74,000	20.000	19.983
25	25.014	25.008	24.8	24.3	2.3	1.0	515.0	116,000	25.000	24.983

DOWEL PINS - INCHES

DOWEL PIN DIMENSIONS - INCHES
NOMINAL SIZE	PIN DIAMETER (A)				(B)	(D)	(R)	CALCULATED SINGLE SHEAR STRENGTH	RECOMMENDED HOLE SIZE
	.0002 over nom.		.001 over nom.
	MAX	MIN	MAX	MIN	MAX	MIN	MIN	POUNDS	MAX	MIN
1/16	0.0628	0.0626	0.0636	0.0634	0.058	0.016	0.008	465	0.0625	0.0620
3/32	0.0941	0.0939	0.0949	0.0947	0.089	0.018	0.012	1,035	0.0937	0.0932
1/8	0.1253	0.1251	0.1261	0.1259	0.120	0.022	0.016	1,845	0.1250	0.1245
5/32	0.1565	0.1563	0.1573	0.1571	0.150	0.022	0.020	2,880	0.1562	0.1557
3/16	0.1878	0.1876	0.1886	0.1884	0.180	0.023	0.023	4,140	0.1875	0.1870
1/4	0.2503	0.2501	0.2511	0.2509	0.240	0.031	0.031	7,370	0.2500	0.2495
5/16	0.3128	0.3126	0.3136	0.3134	0.302	0.034	0.039	11,500	0.3125	0.3120
3/8	0.3753	0.3751	0.3761	0.3759	0.365	0.038	0.047	16,580	0.3750	0.3745
7/16	0.4378	0.4376	0.4386	0.4384	0.424	0.047	0.055	22,540	0.4375	0.4370
1/2	0.5003	0.5001	0.5011	0.5009	0.486	0.047	0.063	29,460	0.5000	0.4995
9/16	0.5628	0.5626	0.5636	0.5634	0.548	0.047	0.070	37,270	0.5625	0.5620
5/8	0.6253	0.6251	0.6261	0.6259	0.611	0.047	0.078	46,020	0.6250	0.6245
3/4	0.7503	0.7501	0.7511	0.7509	0.735	0.059	0.094	66,270	0.7500	0.7495
7/8	0.8753	0.8751	0.8761	0.8759	0.860	0.059	0.109	90,190	0.8750	0.8745
1	1.0003	1.0001	1.0011	1.0009	0.980	0.059	0.125	117,810	1.0000	0.9995