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All Category - Cupped Plugs and Cupped Plugs Pierced - Cupped Plugs and Cupped Plugs Pierced Catalog

Cupped Plugs and Cupped Plugs Pierced Catalog

Inexpensive, efficient, permanent method of closing/sealing manufactured holes in castings and other processes.
Press / interference fit into a through hole – no counter bore required.
Higher pressure retention than a standard blanked edge Welch Plug.
More expensive than a Hubbard (Welch Type) Expansion Plug.

Stock Materials:

Steel: SAE1008/1010 low carbon steel: ASTM#A109
Aluminum: 1100H14 to ASTM#B209.
Brass: ASTM#B36.
Stainless Steel: 302 / 304 ASTM#A313

* These are materials we stock in various thicknesses. It does not mean we have finished inventory of all plugs in each of these materials.

** Customer specific materials different than those listed above are commonly run.

Finishes:

Steel: provided plain finish with a light oil. Expansion plugs can be provided with a wide range of coatings: mechanical zinc (processed in house), electro-zinc, black oxide.
Aluminum: provided plain finish. Aluminum plugs are washed in a light mineral spirit in order to remove any solvents or residue.
Stainless Steel: Provided plain finish. Stainless Steel plugs are washed in a light mineral spirit in order to remove any solvents or residue. Stainless plugs can be passivated.
Brass: provided plain finish. Brass plugs are washed in a light mineral spirit in order to remove any solvents or residue.

Entering an RFQ:

Find the desired plug diameter from the list of part numbers below. Click on this part number and then enter the requested information from the choices provided – material type, material thickness, requested finish (for steel), and desired quantity. You will also have the opportunity to send us any special notes or requirements for our review.

Item #	Major O.D. 'B' Maximum	Major O.D. 'B' Minimum	Minor O.D. 'A' Maximum	Minor O.D. 'A' Minimum	Height 'H'	Radius 'R'	Hole I.D. 'C'	Thickness
Note : click on item number to submit request for quote
CP-170	-	-	-	-	-	-	-	0.035
CP-111	0.200	0.195	0.190	0.185	3/16	3/64	-	0.020
CPP-135	0.257	0.252	0.239	0.234	-	3/64	-	0.025
CP-129	0.265	0.26	0.247	0.242	1/4	3/64	-	0.025
CP-124	0.275	0.265	0.265	0.255	3/16	5/64	-	0.020
CP-141	0.289	0.284	0.279	0.274	3/16	3/64	-	0.020
CP-144	0.332	0.327	0.309	0.304	1/4	1/16	-	0.032
CPP-111	0.342	0.336	0.342	0.336	3/64	3/32	11/64	0.020
CPP-112	0.367	0.361	0.367	0.361	3/16	1/8	15/64	0.016
CP-112	0.4	0.395	0.38	0.375	7/32	1/16	-	0.036
CPP-126	0.442	0.432	0.442	0.432	1/16	3/64	9/32	0.020
CPP-113	0.454	0.434	0.454	0.434	17/64	1/16	11/64	0.050
CP-131	0.458	0.448	0.437	0.432	3/16	1/16	-	0.032
CPP-124	0.502	0.497	0.502	0.497	3/8	1/16	1/4	0.022
CPP-114	0.547	0.541	0.547	0.541	3/8	1/16	1/4	0.022
CPP-115	0.55	0.544	0.55	0.544	3/16	1/16	19/64	0.032
CPP-122	0.55	0.544	0.55	0.544	3/16	1/16	21/64	0.032
CP-123	0.555	0.545	0.536	0.530	1/2	1/8	-	0.032
CP-171	0.57	0.566	0.564	0.56	3/16	3/64	-	0.022
CP-130	0.572	0.562	0.562	0.552	19/64	1/16	-	0.032
CPP-123	0.581	0.575	0.581	0.575	1/8	1/16	3/16	0.032
CPP-130	0.631	0.625	0.631	0.625	11/64	5/64	17/64	0.064
CP-145	0.634	0.631	0.634	0.631	25/64	3/64	-	0.020
CP-149	0.639	0.636	0.639	0.636	13/64	5/64	-	0.040
CPP-129	0.66	0.654	0.66	0.654	7/64	1/16	23/64	0.016
CPP-125	0.669	0.659	0.669	0.659	5/16	5/64	15/32	0.050
CP-137	0.696	0.69	0.696	0.69	13/64	3/32	-	0.025
CPP-132	0.755	0.745	0.755	0.745	1/16	1/32	39/64	0.010
CP-169	0.764	0.754	0.764	0.754	5/16	-	-	0.050
CP-128	0.766	0.76	0.766	0.76	13/64	3/32	-	0.025
CP-136	0.778	0.772	0.734	0.728	1/4	1/16	-	0.032
CPP-134	0.806	0.794	0.764	0.744	39/64	1/8	17/64	0.072
CP-138	0.817	0.811	0.817	0.811	1/8	3/32	-	0.032
CPP-116	0.817	0.811	0.817	0.811	1/8	3/32	19/32	0.032
CPP-117	0.823	0.817	0.823	0.817	1/8	1/16	11/32	0.036
CPP-119	0.874	0.868	0.874	0.868	9/16	3/32	25/64	0.025
CPP-118	0.878	0.872	0.878	0.872	3/16	3/32	17/32	0.050
CP-146	0.887	0.884	0.887	0.884	1/4	7/64	-	0.050
CPP-120	0.909	0.903	0.909	0.903	5/16	1/16	1/2	0.020
CP-114	0.924	0.918	0.909	0.899	11/32	3/32	-	0.032
CP-115	0.942	0.936	0.934	0.928	3/8	3/32	-	0.032
CP-116	0.942	0.936	0.927	0.917	1/4	3/32	-	0.032
CP-133	0.959	0.953	0.951	0.945	3/16	3/32	-	0.062
CP-118	1.008	1.004	1.003	0.999	1/2	1/16	-	0.040
CP-117	1.009	1.003	1.008	1.002	7/16	1/8	-	0.062
CP-166	1.012	1.01	1.012	1.01	5/16	1/16	-	0.050
CP-119	1.063	1.057	1.063	1.057	5/16	9/64	-	0.050
CP-121	1.099	1.093	1.093	1.087	7/16	1/8	-	0.062
CP-172	1.141	1.135	1.128	1.122	-	1/16	-	0.032
CP-168	1.196	1.19	1.179	1.173	5/16	1/8	-	0.062
CPP-121	1.378	1.372	1.378	1.372	7/64	1/32	53/64	0.025
CP-120	1.38	1.37	1.369	1.358	3/8	1/8	-	0.032
CP-132	1.386	1.37	1.386	1.38	13/32	3/32	-	0.036
CPP-162	1.388	1.386	1.388	1.386	5/16	1/16	-	0.064
CP-122	1.508	1.502	1.508	1.502	7/16	3/16	-	0.062
CP-134	1.521	1.515	1.495	1.489	7/16	1/8	-	0.062
CP-142	1.54	1.53	1.529	1.518	3/8	1/8	-	0.032
CP-140	1.567	1.557	1.556	1.545	3/8	1/8	-	0.032
CP-160	1.887	1.885	1.887	1.885	1/4	1/16	-	0.064
CP-125	1.948	1.942	1.94	1.934	9/16	1/8	-	0.062
CP-126	1.964	1.958	1.956	1.95	5/8	1/8	-	0.062
CP-147	2.017	2.01	1.997	1.992	7/16	9/64	-	0.074
CP-135	2.022	2.016	1.997	1.991	7/16	1/8	-	0.062
CP-164	2.138	2.135	2.138	2.135	23/64	1/16	-	0.064
CPP-128	2.324	2.304	2.289	2.269	11/32	5/32	25/32	0.062
CP-143	2.772	2.766	2.747	2.741	7/16	1/8	-	0.062
Total: 66