Bolt Hole

Bolt center wheels BZ Spherical countersink

#	EUWA (Std.)	IAP(MWM) (Std.)	d2 (mm)	d3 (mm)	r1 (mm)	Threads
1	B14 DS 28	B1	18.5	24	14	M14 x 1.5
2	B14 ES 28	A1	18.5	24	14	M14 x 1.5
3	B14 IS 28	A1	18.5	24	14	M14 x 1.5
4	B18 DS 32	B2	21.5	27	16	M18 x 1.5
5	B18 ES 32	A2	21.5	27	16	M18 x 1.5
6	B18 IS 32	A2	21.5	27	16	M18 x 1.5
7	B22 DS 36	B3	27	32	18	M22 x 1.5 (M20 x 1.5)
8	B22 ES 36	A3	27	32	18	M22 x 1.5 (M20 x 1.5)
9	B22 IS 36	A3	27	32	18	M22 x 1.5 (M20 x 1.5)
10	B19 DS 44.4	B5	32.5	37.5	22.2	3/4″ UNF-threads
11	B19 ES 44.4	A5	32.5	37.5	22.2	3/4″ UNF-threads

Mixed centered wheels (MZ) Spherical countersink

12	M22 DS 39	B33	26	32	18	M22 x 1.5 (M20 x 1.5)
13	M22 ES 39	A33	26	32	18	M22 x 1.5 (M20 x 1.5)
14	M22 IS 39	A33	26	32	18	M22 x 1.5 (M20 x 1.5)
15	M19 DS 44.4	B5	32.5	37.5	22.2	3/4″ UNF-threads
16	M19 ES 44.4	A5	32.5	37.5	22.2	3/4″ UNF-threads

Spherical countersink                 passenger car wheels

17		E1	12	17.3	14	1/4″ UNF-threads
18		E2	12	16.5	14	1/4″ UNF-threads

Bolt hole centered wheels BZ Conical countersink

#	EUWA (Std.)	IAP(MWM) (Std.)	d2 (mm)	d3 (mm)	angle (α)	Threads
1	B23 DC 80	B17	25.4	31	80°	7/84″ UNF-threads
2	B23 EC 80	A17	25.4	31	80°	7/84″ UNF-threads
3	B23 IC 80	A17	25.4	31	80°	7/84″ UNF-threads

Mixed centered wheels (MZ) Conical countersink

4	M23 EC 80	A37	26	31	80°	7/84″ UNF-threads
5	M23 IC 80	A37	26	31	80°	7/84″ UNF-threads
6	M23 DC 80	B37	26	31	80°	7/84″ UNF-threads

Conical countersink                 passenger car wheels

7		E3	10.5	14	60°	M10 x 1.25
8		E4	13.5	16.5	60°	M12 x 1.25
9		E5	13.6	17	60°	M12 x 1.25
10		E6	14	18	60°	M12 x 1.5
11		E7	14.5	18.5	60°	M12 x 1.5
12		E8	15	17.5	60°	M12 x 1.5
13		E9	15	18	60°	M12 x 1.5
14		E10	16	18.5	60°	M12 x 1.5
15		E19	17.5	20.8	60°	M14 x 1.5