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“Stay Connected” with Strain Relief Bushings ® Heyco Strain Relief Mounting Hole Plugs ® Multiple Panel Thickness Design PANEL DIMENSIONS D C Maximum Mounting Hole To Prevent Thickness Diameter Rotation in. mm. in. mm. in. mm. PART NO. DESCRIPTION Black PART DIMENSIONS A B Head Overall Diameter Height in. mm. in. mm. For Double D Mounting Hole Strain Reliefs .125 3,2 .125 3,2 .125 3,2 .125 3,2 .375 .437 .500 .562 .625 .750 .875 1.109 2.000 9,5 11,1 12,7 14,3 15,9 19,1 22,2 28,2 50,8 .345 .390 .445 .530 .550 .625 .770 1.000 1.875 8,8 9,9 11,3 13,5 14,0 15,9 19,5 25,4 47,6 2617 2488 2491 2494 2497 2503 2509 2717 2959 DP 375* DD 437-390 DD 500-445 DD 562-530 DD 625-550 DD 750-625 DD 875-770 DD 1109-1000 DD 2000-1875 .468 .531 .554 .656 .728 .921 1.016 1.218 2.170 11,9 13,5 14,7 16,7 18,5 23,4 25,8 30,9 55,1 .406 10,3 .406 10,3 .453 11,5 .478 12,1 .403 .470 10,2 11,9 For Lockit ST-Series, Rectangular Mounting Hole Strain Reliefs** .099 2,5 .512 13,0 .453 11,5 1890† RP 115-130 .580 14,7 .157 4,0 .690 17,5 .690 17,5 1892 RP 175-175 .830 21,1 Standard color black. Consult Heyco for white and other colors. *On installation, DP 375 Locking Fingers must be aligned with Mounting Hole Flats. **Rectangular Plugs locking finger steps match those of the corresponding ST Lockit Strain Reliefs. †PN 1890 is not CSA certified. C B A B A • Closes unused strain relief mounting holes or Double D holes punched or molded with two opposing flats. • Convex, matte finish head tapers to a thin edge. • Quick and easy installation. • Locks firmly in panels up to .157˝ (4,0 mm) thick. • Use our rectangular plugs #1890 and #1892 to fill unneeded square Lockit™ Strain Relief mounting holes. • Approximate Head Thickness: .063˝ (1,6 mm). Thickness may vary. • For Double D Mounting Hole Punches, see page 4-30. D “DOUBLE D” MOUNTING HOLE D C MOUNTING HOLE PART NUMBERS 1890/1891 1890, 1892 Material Certifications Flammability Rating Temperature Range Nylon 6/6 Recognized under the Component Program of Underwriters’ Laboratories File E51579 Certified by the Canadian Standards Association File 8919 94V-2 -40°F (-40°C) to 221°F (105°C) 1-800-526-4182 • 732-286-1800 (NJ) • FAX: 732-244-8843 • www.heyco.com Quick Specs 4-38