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Tapered Cup Expansion Plugs, Cupped Plugs

Tapered cup expansion plugs are used to plug or seal an existing hole for higher pressure than concave style.

Use our Quick Search below to source steel (cold rolled steel) tapered cup expansion plugs from our wide selection of options.

Material: Steel (CRS)

Customary Finishes: Black Oxide (BO), Nickel (N), Zinc Type II & III (Z2 & Z3) (other finishes also available)

Not all available materials or finishes are listed in our catalog for every part number. If you require a different material, finish or size, please submit a quote.

If you need additional information on your particular tapered cup expansion plug application click on one of the links below:
     View our material & finish specification sheets
     View metallic material characteristic information
     View finish characteristic information

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Material

Min A

Max A

Min B

Max B

All Available PartsOnly Parts in Stock

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Dimensions in Inches

Product Number	Nominal Plug Dia	A (Min)	A (Max)	B (Min)	B (Max)	C	T	Material	Finish	Stock	Leadtime	Get Pricing
5791-1	0.281	0.271	0.281	0.286	0.289	0.172	0.036	Cold Rolled Steel		0	9-10 Weeks	Price
5791-1-BO	0.281	0.271	0.281	0.286	0.289	0.172	0.036	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-1-N	0.281	0.271	0.281	0.286	0.289	0.172	0.036	Cold Rolled Steel	Nickel	0	5-6 Weeks	Price
5791-1-Z2	0.281	0.271	0.281	0.286	0.289	0.172	0.036	Cold Rolled Steel	Zinc Type II	0	Call for Delivery	Price
5791-1-Z3	0.281	0.271	0.281	0.286	0.289	0.172	0.036	Cold Rolled Steel	Zinc Type III	0	Call for Delivery	Price
5791-26	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel		4875	In Stock - Ready To Ship!	Price
5791-26-BO	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel	Black Oxide	17	In Stock - Ready To Ship!	Price
5791-26-C1	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel	Cadmium Type I	0	6-7 Weeks for <= 4875 Call for Delivery for > 4875	Price
5791-26-N	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel	Nickel	0	6-7 Weeks for <= 4875 Call for Delivery for > 4875	Price
5791-26-Z3	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel	Zinc Type III	14	In Stock - Ready To Ship!	Price
5791-27	0.344	0.334	0.344	0.349	0.352	0.172	0.036	Cold Rolled Steel		766	In Stock - Ready To Ship!	Price
5791-27-BO	0.344	0.334	0.344	0.349	0.352	0.172	0.036	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-27-Z3	0.344	0.334	0.344	0.349	0.352	0.172	0.036	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 766 Call for Delivery for > 766	Price
5791-2-BO	0.375	0.365	0.375	0.381	0.384	0.240	0.048	Cold Rolled Steel	Black Oxide	0	6-7 Weeks for <= 2000 Call for Delivery for > 2000	Price
5791-2	0.375	0.365	0.375	0.381	0.384	0.240	0.048	Cold Rolled Steel		2000	In Stock - Ready To Ship!	Price
5791-28	0.406	0.396	0.406	0.412	0.415	0.240	0.048	Cold Rolled Steel		2	In Stock - Ready To Ship!	Price
5791-28-BO	0.406	0.396	0.406	0.412	0.415	0.240	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-28-N	0.406	0.396	0.406	0.412	0.415	0.240	0.048	Cold Rolled Steel	Nickel	22	In Stock - Ready To Ship!	Price
5791-28-Z3	0.406	0.396	0.406	0.412	0.415	0.240	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 2 Call for Delivery for > 2	Price
5791-3	0.438	0.428	0.438	0.444	0.447	0.240	0.048	Cold Rolled Steel		2113	In Stock - Ready To Ship!	Price
5791-3-BO	0.438	0.428	0.438	0.444	0.447	0.240	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-3-Z3	0.438	0.428	0.438	0.444	0.447	0.240	0.048	Cold Rolled Steel	Zinc Type III	10	In Stock - Ready To Ship!	Price
5791-4	0.469	0.459	0.469	0.475	0.478	0.240	0.048	Cold Rolled Steel		9782	In Stock - Ready To Ship!	Price
5791-4-BO	0.469	0.459	0.469	0.475	0.478	0.240	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-4-Z2	0.469	0.459	0.469	0.475	0.478	0.240	0.048	Cold Rolled Steel	Zinc Type II	0	6-7 Weeks for <= 9782 Call for Delivery for > 9782	Price
5791-4-Z3	0.469	0.459	0.469	0.475	0.478	0.240	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 9782 Call for Delivery for > 9782	Price
5791-5	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel		8132	In Stock - Ready To Ship!	Price
5791-5-BO	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel	Black Oxide	872	In Stock - Ready To Ship!	Price
5791-5-N	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel	Nickel	0	6-7 Weeks for <= 8132 Call for Delivery for > 8132	Price
5791-5-Z2	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel	Zinc Type II	0	6-7 Weeks for <= 8132 Call for Delivery for > 8132	Price
5791-5-Z3	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel	Zinc Type III	2297	In Stock - Ready To Ship!	Price
5791-6	0.531	0.521	0.531	0.537	0.540	0.380	0.048	Cold Rolled Steel		36	In Stock - Ready To Ship!	Price
5791-6-BO	0.531	0.521	0.531	0.537	0.540	0.380	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-6-Z3	0.531	0.521	0.531	0.537	0.540	0.380	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 36 Call for Delivery for > 36	Price
5791-24	0.547	0.544	0.554	0.560	0.565	0.210	0.032	Cold Rolled Steel		10826	In Stock - Ready To Ship!	Price
5791-24-BO	0.547	0.544	0.554	0.560	0.565	0.210	0.032	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-24-N	0.547	0.544	0.554	0.560	0.565	0.210	0.032	Cold Rolled Steel	Nickel	0	6-7 Weeks for <= 10826 Call for Delivery for > 10826	Price
5791-24-Z3	0.547	0.544	0.554	0.560	0.565	0.210	0.032	Cold Rolled Steel	Zinc Type III	231	In Stock - Ready To Ship!	Price
5791-7	0.562	0.552	0.562	0.568	0.571	0.380	0.048	Cold Rolled Steel		1119	In Stock - Ready To Ship!	Price
5791-7-BO	0.562	0.552	0.562	0.568	0.571	0.380	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-7-Z3	0.562	0.552	0.562	0.568	0.571	0.380	0.048	Cold Rolled Steel	Zinc Type III	5436	In Stock - Ready To Ship!	Price
5791-8	0.594	0.584	0.594	0.600	0.603	0.380	0.048	Cold Rolled Steel		2335	In Stock - Ready To Ship!	Price
5791-8-BO	0.594	0.584	0.594	0.600	0.603	0.380	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-9	0.625	0.615	0.625	0.631	0.634	0.380	0.048	Cold Rolled Steel		1388	In Stock - Ready To Ship!	Price
5791-9-BO	0.625	0.615	0.625	0.631	0.634	0.380	0.048	Cold Rolled Steel	Black Oxide	8	In Stock - Ready To Ship!	Price
5791-9-Z2	0.625	0.615	0.625	0.631	0.634	0.380	0.048	Cold Rolled Steel	Zinc Type II	0	6-7 Weeks for <= 1388 Call for Delivery for > 1388	Price
5791-9-Z3	0.625	0.615	0.625	0.631	0.634	0.380	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 1388 Call for Delivery for > 1388	Price
5791-10	0.656	0.646	0.656	0.662	0.665	0.380	0.048	Cold Rolled Steel		309	In Stock - Ready To Ship!	Price
5791-10-BO	0.656	0.646	0.656	0.662	0.665	0.380	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-10-Z3	0.656	0.646	0.656	0.662	0.665	0.380	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 309 Call for Delivery for > 309	Price
5791-11	0.688	0.678	0.688	0.694	0.697	0.380	0.048	Cold Rolled Steel		74588	In Stock - Ready To Ship!	Price
5791-11-BO	0.688	0.678	0.688	0.694	0.697	0.380	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-12	0.719	0.709	0.719	0.725	0.728	0.380	0.048	Cold Rolled Steel		1142	In Stock - Ready To Ship!	Price
5791-12-BO	0.719	0.709	0.719	0.725	0.728	0.380	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-13	0.750	0.740	0.750	0.756	0.759	0.380	0.048	Cold Rolled Steel		5228	In Stock - Ready To Ship!	Price
5791-13-BO	0.750	0.740	0.750	0.756	0.759	0.380	0.048	Cold Rolled Steel	Black Oxide	0	6-7 Weeks for <= 5228 Call for Delivery for > 5228	Price
5791-13-Z3	0.750	0.740	0.750	0.756	0.759	0.380	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 5228 Call for Delivery for > 5228	Price
5791-33	0.812	0.802	0.812	0.818	0.821	0.500	0.048	Cold Rolled Steel		112	In Stock - Ready To Ship!	Price
5791-33-BO	0.812	0.802	0.812	0.818	0.821	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-33-N	0.812	0.802	0.812	0.818	0.821	0.500	0.048	Cold Rolled Steel	Nickel	0	6-7 Weeks for <= 112 Call for Delivery for > 112	Price
5791-33-Z3	0.812	0.802	0.812	0.818	0.821	0.500	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 112 Call for Delivery for > 112	Price
5791-14	0.875	0.865	0.875	0.881	0.884	0.500	0.048	Cold Rolled Steel		1888	In Stock - Ready To Ship!	Price
5791-14-BO	0.875	0.865	0.875	0.881	0.884	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-14-Z3	0.875	0.865	0.875	0.881	0.884	0.500	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 1888 Call for Delivery for > 1888	Price
5791-15	0.922	0.917	0.927	0.933	0.936	0.500	0.048	Cold Rolled Steel		76	In Stock - Ready To Ship!	Price
5791-15-BO	0.922	0.917	0.927	0.933	0.936	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-16	0.938	0.928	0.938	0.944	0.947	0.500	0.048	Cold Rolled Steel		250	In Stock - Ready To Ship!	Price
5791-16-BO	0.938	0.928	0.938	0.944	0.947	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-17	1	0.990	1	1.006	1.009	0.500	0.048	Cold Rolled Steel		768	In Stock - Ready To Ship!	Price
5791-17-BO	1	0.990	1	1.006	1.009	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-17-Z3	1	0.990	1	1.006	1.009	0.500	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 768 Call for Delivery for > 768	Price
5791-25	1.063	1.052	1.062	1.069	1.073	0.500	0.048	Cold Rolled Steel		8479	In Stock - Ready To Ship!	Price
5791-25-BO	1.063	1.052	1.062	1.069	1.073	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-25-Z3	1.063	1.052	1.062	1.069	1.073	0.500	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 8479 Call for Delivery for > 8479	Price
5791-29	1.125	1.115	1.125	1.132	1.136	0.500	0.048	Cold Rolled Steel		2101	In Stock - Ready To Ship!	Price
5791-29-BO	1.125	1.115	1.125	1.132	1.136	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-29-Z2	1.125	1.115	1.125	1.132	1.136	0.500	0.048	Cold Rolled Steel	Zinc Type II	19	In Stock - Ready To Ship!	Price
5791-18	1.188	1.178	1.188	1.195	1.199	0.500	0.048	Cold Rolled Steel		472	In Stock - Ready To Ship!	Price
5791-18-BO	1.188	1.178	1.188	1.195	1.199	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-19	1.250	1.240	1.250	1.257	1.261	0.500	0.048	Cold Rolled Steel		7911	In Stock - Ready To Ship!	Price
5791-19-BO	1.250	1.240	1.250	1.257	1.261	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-19-Z3	1.250	1.240	1.250	1.257	1.261	0.500	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 7911 Call for Delivery for > 7911	Price
5791-30	1.250	1.240	1.250	1.257	1.261	0.250	0.060	Cold Rolled Steel		48	In Stock - Ready To Ship!	Price
5791-30-BO	1.250	1.240	1.250	1.257	1.261	0.250	0.060	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-30-Z2	1.250	1.240	1.250	1.257	1.261	0.250	0.060	Cold Rolled Steel	Zinc Type II	0	6-7 Weeks for <= 48 Call for Delivery for > 48	Price
5791-30-Z3	1.250	1.240	1.250	1.257	1.261	0.250	0.060	Cold Rolled Steel	Zinc Type III	865	In Stock - Ready To Ship!	Price
5791-34	1.312	1.302	1.312	1.319	1.323	0.500	0.048	Cold Rolled Steel		63	In Stock - Ready To Ship!	Price
5791-34-BO	1.312	1.302	1.312	1.319	1.323	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-20	1.375	1.365	1.375	1.382	1.386	0.500	0.048	Cold Rolled Steel		17250	In Stock - Ready To Ship!	Price
5791-20-BO	1.375	1.365	1.375	1.382	1.386	0.500	0.048	Cold Rolled Steel	Black Oxide	309	In Stock - Ready To Ship!	Price
5791-31	1.437	1.428	1.438	1.445	1.449	0.500	0.048	Cold Rolled Steel		545	In Stock - Ready To Ship!	Price
5791-31-BO	1.437	1.428	1.438	1.445	1.449	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-21	1.500	1.490	1.500	1.507	1.511	0.500	0.048	Cold Rolled Steel		1355	In Stock - Ready To Ship!	Price
5791-21-BO	1.500	1.490	1.500	1.507	1.511	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-21-Z3	1.500	1.490	1.500	1.507	1.511	0.500	0.048	Cold Rolled Steel	Zinc Type III	0	6-7 Weeks for <= 1355 Call for Delivery for > 1355	Price
5791-32	1.625	1.615	1.625	1.633	1.637	0.500	0.048	Cold Rolled Steel		0	4-5 Weeks	Price
5791-32-BO	1.625	1.615	1.625	1.633	1.637	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-22	1.750	1.740	1.750	1.758	1.762	0.500	0.048	Cold Rolled Steel		495	In Stock - Ready To Ship!	Price
5791-22-BO	1.750	1.740	1.750	1.758	1.762	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-22-Z2	1.750	1.740	1.750	1.758	1.762	0.500	0.048	Cold Rolled Steel	Zinc Type II	0	6-7 Weeks for <= 495 Call for Delivery for > 495	Price
5791-23	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel		0	9-10 Weeks	Price
5791-23-BO	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price
5791-23-N	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel	Nickel	0	Call for Delivery	Price
5791-23-Z2	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel	Zinc Type II	0	Call for Delivery	Price
5791-23-Z3	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel	Zinc Type III	0	Call for Delivery	Price
5791-35	2	1.990	2	2.008	2.012	0.500	0.048	Cold Rolled Steel		2477	In Stock - Ready To Ship!	Price
5791-35-BO	2	1.990	2	2.008	2.012	0.500	0.048	Cold Rolled Steel	Black Oxide	0	4-5 Weeks	Price

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