Thick Wide Flange Tapered Plug Caps are inexpensive fasteners with a dual function closure that can be used as either a plug or a cap. With a thicker and wider flange, it is easier to handle and prevents the plug from pushing through the opening.

Thick Wide Flange Tapered Plug Caps meet aircraft, aerospace and defense industry standards. These Plug Caps are stocked in sizes to plug holes from 0.125" through 6.620" and to cap parts from 0.060" through 6.630" diameters. Recommended uses include tube and hydraulic fittings, tube end caps, pipe caps or product protection.
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Item #

Item Name

Length

Large Inside Diameter

Small Inside Diameter

04MTWF.116/.182YW1 N/A 3.1 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.370 in9.4 mm N/A 0.120 in3.1 mm N/A 0.053 in1.4 mm
04MTWF.173/.240YW1 N/A 4.5 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.370 in9.4 mm N/A 0.177 in4.5 mm N/A 0.111 in2.8 mm
04MTWF.236/.296YW1 N/A 5.7 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.310 in7.9 mm N/A 0.225 in5.7 mm N/A 0.174 in4.4 mm
04MTWF.299/.365YW1 N/A 7.7 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.310 in7.9 mm N/A 0.302 in7.7 mm N/A 0.235 in6.0 mm
04MTWF.333/.392YW1 N/A 8.1 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.310 in7.9 mm N/A 0.319 in8.1 mm N/A 0.269 in6.8 mm
04MTWF.367/.418YW1 N/A 9.0 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.310 in7.9 mm N/A 0.354 in9.0 mm N/A 0.298 in7.6 mm
04MTWF.397/.447YW1 N/A 9.7 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.380 in9.6 mm N/A 0.383 in9.7 mm N/A 0.328 in8.3 mm
04MTWF.427/.475YW1 N/A 10.4 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.310 in7.9 mm N/A 0.409 in10.4 mm N/A 0.356 in9.0 mm
04MTWF.435/.509YW1 N/A 11.2 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.370 in9.4 mm N/A 0.439 in11.2 mm N/A 0.365 in9.3 mm
04MTWF.481/.547YW1 N/A 12.5 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.370 in9.4 mm N/A 0.493 in12.5 mm N/A 0.409 in10.4 mm
04MTWF.500/.563YW1 N/A 12.7 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.370 in9.4 mm N/A 0.500 in12.7 mm N/A 0.440 in11.2 mm
04MTWF.530/.615YW1 N/A 13.9 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.370 in9.4 mm N/A 0.547 in13.9 mm N/A 0.468 in11.9 mm
04MTWF.560/.631YW1 N/A 14.7 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.410 in10.4 mm N/A 0.579 in14.7 mm N/A 0.497 in12.6 mm
04MTWF.590/.667YW1 N/A 15.4 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.440 in11.2 mm N/A 0.605 in15.4 mm N/A 0.518 in13.2 mm
04MTWF.610/.687YW1 N/A 16.1 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.440 in11.2 mm N/A 0.635 in16.1 mm N/A 0.548 in13.9 mm
04MTWF.628/.725YW1 N/A 16.8 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.440 in11.2 mm N/A 0.662 in16.8 mm N/A 0.558 in14.2 mm
04MTWF.658/.750YW1 N/A 17.5 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.440 in11.2 mm N/A 0.687 in17.5 mm N/A 0.588 in14.9 mm
04MTWF.690/.775YW1 N/A 18.3 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.470 in11.9 mm N/A 0.721 in18.3 mm N/A 0.620 in15.8 mm
04MTWF.725/.812YW1 N/A 19.3 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.500 in12.7 mm N/A 0.761 in19.3 mm N/A 0.663 in16.8 mm
04MTWF.755/.870YW1 N/A 20.5 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.500 in12.7 mm N/A 0.808 in20.5 mm N/A 0.693 in17.6 mm
04MTWF.820/.930YW1 N/A 22.0 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.530 in13.5 mm N/A 0.865 in22.0 mm N/A 0.755 in19.2 mm
04MTWF.867/.975YW1 N/A 23.2 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.560 in14.2 mm N/A 0.913 in23.2 mm N/A 0.805 in20.5 mm
04MTWF.915/1.03YW1 N/A 24.4 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.630 in16.0 mm N/A 0.960 in24.4 mm N/A 0.840 in21.3 mm
04MTWF.984/1.10YW1 N/A 26.4 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.660 in16.8 mm N/A 1.040 in26.4 mm N/A 0.919 in23.3 mm
04MTWF1.09/1.21YW1 N/A 28.8 Millimeter (mm) Large Inside Diameter Thick Wide Flange Tapered Plug Cap N/A 0.690 in17.5 mm N/A 1.132 in28.8 mm N/A 1.031 in26.2 mm
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