• Small O.D. in relation to I.D.
• Use with small headed screws and special narrow-rimmed nuts.
• Ideal where clearance or appearance may be a factor.

External Type

Nominal Washer Size	Hole Dia. Min.	Hole Dia. Max.	Rim Width	Outside Dia. Min.	Outside Dia. Max.	Thickness	WCL Part Number	Cross Reference
4	0.116	0.123	0.019	0.215	0.225	0.015	EXT-0112-02-00	1104-02
10	0.195	0.199	0.031	0.335	0.345	0.017	EXT-0190-03-00	1110-03
1/4	0.257	0.263	0.03	0.428	0.44	0.017	EXT-0250-02-00	1114-02
1/4	0.256	0.267	0.026	0.365	0.375	0.02	EXT-0250-05-00	1114-05
1/4	0.246	0.25	0.034	0.365	0.375	0.017	EXT-0250-11-00	1114-11
1/4	0.256	0.267	0.026	0.365	0.375	0.029	EXT-0250-18-00	1114-18
3/8	0.38	0.387	0.034	0.55	0.562	0.015	EXT-0375-12-00	1120-12
5/8	0.625	0.635	0.054	0.839	0.849	0.035	EXT-0625-06-00	1128-06

Internal Type

Nominal Washer Size	Hole Dia. Min.	Hole Dia. Max.	Rim Width	Outside Dia. Min.	Outside Dia. Max.	Thickness	WCL Part Number	Cross Reference
8	0.168	0.176	0.023	0.3	0.311	0.02	INT-0164-05-00	1208-05
10	0.195	0.204	0.023	0.3	0.311	0.017	INT-0190-06-00	1210-06
5/16	0.314	0.322	0.025	0.425	0.435	0.022	INT-0312-02-00	1218-02
5/16	0.314	0.322	0.025	0.425	0.435	0.015	INT-0312-04-00	1218-04
3/8	0.377	0.391	0.032	0.493	0.507	0.022	INT-0375-02-00	1220-02
3/8	0.41	0.425	0.048	0.595	0.615	0.022	INT-0375-08-00	1220-08
3/8	0.38	0.387	0.045	0.557	0.567	0.025	INT-0375-10-00	1220-10*
7/16	0.439	0.442	0.025	0.533	0.547	0.022	INT-0437-04-00	1222-04
1/2	0.545	0.56	0.055	0.765	0.785	0.025	INT-0500-06-00	1224-06
1/2	0.545	0.56	0.055	0.765	0.785	0.03	INT-0500-10-00	1224-10
9/16	0.575	0.585	0.045	0.763	0.777	0.029	INT-0562-03-00	1226-03
3/4	0.757	0.76	0.064	1.047	1.077	0.022	INT-0750-04-00	1232-04
3/4	0.775	0.785	0.064	1.047	1.077	0.022	INT-0750-07-00	1232-07
13/16	0.818	0.828	0.064	1.047	1.077	0.022	INT-0812-03-00	1233-03
7/8	0.88	0.89	0.043	1.08	1.11	0.02	INT-0875-04-00	1234-04
1	1.01	1.02	0.087	1.36	1.39	0.025	INT-1000-05-00	1236-05
1-1/8	1.163	1.175	0.045	1.425	1.45	0.025	INT-1125-08-00	1238-08
1-5/8	1.63	1.645	0.045	1.797	1.827	0.015	INT-1625-02-00	1246-02
1-3/4	1.768	1.79	0.142	2.219	2.281	0.029	INT-1750-01-00	1248-01