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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

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Max A

Min B

Max B

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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	3-4 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 or VI	0	9-10 Weeks	Price
5791-1-Z3	0.281	0.271	0.281	0.286	0.289	0.172	0.036	Cold Rolled Steel	Zinc Type III or V	0	9-10 Weeks	Price
5791-26	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel		1434	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 <= 1434 9-10 Weeks for > 1434	Price
5791-26-N	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel	Nickel	0	8-9 Weeks for <= 1434 Call for Delivery for > 1434	Price
5791-26-Z3	0.312	0.302	0.312	0.317	0.320	0.168	0.036	Cold Rolled Steel	Zinc Type III or V	67	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		870	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 or V	0	6-7 Weeks for <= 870 Call for Delivery for > 870	Price
5791-2-BO	0.375	0.365	0.375	0.381	0.384	0.240	0.048	Cold Rolled Steel	Black Oxide	0	9-10 Weeks	Price
5791-2	0.375	0.365	0.375	0.381	0.384	0.240	0.048	Cold Rolled Steel		0	4-5 Weeks	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	2	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 or V	0	6-7 Weeks for <= 2 9-10 Weeks for > 2	Price
5791-3	0.438	0.428	0.438	0.444	0.447	0.240	0.048	Cold Rolled Steel		3298	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 or V	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		2371	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 or VI	0	6-7 Weeks for <= 2371 9-10 Weeks for > 2371	Price
5791-4-Z3	0.469	0.459	0.469	0.475	0.478	0.240	0.048	Cold Rolled Steel	Zinc Type III or V	0	6-7 Weeks for <= 2371 9-10 Weeks for > 2371	Price
5791-5	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel		3042	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	0	6-7 Weeks for <= 3042 9-10 Weeks for > 3042	Price
5791-5-N	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel	Nickel	0	8-9 Weeks for <= 3042 Call for Delivery for > 3042	Price
5791-5-Z2	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel	Zinc Type II or VI	0	6-7 Weeks for <= 3042 9-10 Weeks for > 3042	Price
5791-5-Z3	0.500	0.490	0.500	0.506	0.509	0.380	0.048	Cold Rolled Steel	Zinc Type III or V	8	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 or V	0	6-7 Weeks for <= 36 9-10 Weeks for > 36	Price
5791-24	0.547	0.544	0.554	0.560	0.565	0.210	0.032	Cold Rolled Steel		0	3-4 Weeks	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	Call for Delivery	Price
5791-24-Z3	0.547	0.544	0.554	0.560	0.565	0.210	0.032	Cold Rolled Steel	Zinc Type III or V	13	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		1099	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 or V	5434	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		2325	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		2235	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 or VI	0	6-7 Weeks for <= 2235 9-10 Weeks for > 2235	Price
5791-9-Z3	0.625	0.615	0.625	0.631	0.634	0.380	0.048	Cold Rolled Steel	Zinc Type III or V	0	6-7 Weeks for <= 2235 9-10 Weeks for > 2235	Price
5791-10	0.656	0.646	0.656	0.662	0.665	0.380	0.048	Cold Rolled Steel		1555	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 or V	0	6-7 Weeks for <= 1555 9-10 Weeks for > 1555	Price
5791-11	0.688	0.678	0.688	0.694	0.697	0.380	0.048	Cold Rolled Steel		74514	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		1132	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		6275	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 <= 6275 9-10 Weeks for > 6275	Price
5791-13-Z3	0.750	0.740	0.750	0.756	0.759	0.380	0.048	Cold Rolled Steel	Zinc Type III or V	469	In Stock - Ready To Ship!	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	8-9 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 or V	0	6-7 Weeks for <= 112 9-10 Weeks for > 112	Price
5791-14	0.875	0.865	0.875	0.881	0.884	0.500	0.048	Cold Rolled Steel		1886	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 or V	0	6-7 Weeks for <= 1886 9-10 Weeks for > 1886	Price
5791-15	0.922	0.917	0.927	0.933	0.936	0.500	0.048	Cold Rolled Steel		1133	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		756	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 or V	0	6-7 Weeks for <= 756 9-10 Weeks for > 756	Price
5791-25	1.063	1.052	1.062	1.069	1.073	0.500	0.048	Cold Rolled Steel		8378	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 or V	0	6-7 Weeks for <= 8378 9-10 Weeks for > 8378	Price
5791-29	1.125	1.115	1.125	1.132	1.136	0.500	0.048	Cold Rolled Steel		1020	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 or VI	0	6-7 Weeks for <= 1020 Call for Delivery for > 1020	Price
5791-18	1.188	1.178	1.188	1.195	1.199	0.500	0.048	Cold Rolled Steel		412	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		5888	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 or V	684	In Stock - Ready To Ship!	Price
5791-30	1.250	1.240	1.250	1.257	1.261	0.250	0.060	Cold Rolled Steel		2286	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 or VI	0	6-7 Weeks for <= 2286 9-10 Weeks for > 2286	Price
5791-30-Z3	1.250	1.240	1.250	1.257	1.261	0.250	0.060	Cold Rolled Steel	Zinc Type III or V	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		17210	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		1457	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 or V	7	In Stock - Ready To Ship!	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		85	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 or VI	10	In Stock - Ready To Ship!	Price
5791-23	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel		17848	In Stock - Ready To Ship!	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	8-9 Weeks for <= 17848 Call for Delivery for > 17848	Price
5791-23-Z2	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel	Zinc Type II or VI	0	6-7 Weeks for <= 17848 9-10 Weeks for > 17848	Price
5791-23-Z3	1.875	1.865	1.875	1.883	1.887	0.500	0.048	Cold Rolled Steel	Zinc Type III or V	0	6-7 Weeks for <= 17848 9-10 Weeks for > 17848	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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