Stay Connected with Bushings, Grommets, HEYcaps & Plugs Consult Heyco Heyco Nylon Knock Out Seals for our Complete Line of Dome Plugs and Thick Panel Knock Out Seals Mounting Hole Diameter Range: 1/2 to 2 Electrical Knock-outs (.875 to 2.500 nominal) Plug electrical knock-outs. MOUNTING TRADE SIZE PART NO. DESCRIPTION PART DIMENSIONS HOLE Silver AB Molded in silver gray color to DIAMETER Gray Head Diameter Overall Height resemble galvanized steel. in. mm. in. mm. in. mm. Install quickly with fingertip Multiple Locking Steps for Panel Thickness up to .125 (3,2 mm) pressure (no tool required)875 22,2 1/2 3997 KOS 1/2 1.02 25,8 Economical. 1.093 27,8 3/4 3998 KOS 3/4 1.22 31,0 .45 11,5 Multiple trade sizes fit 1/2 to 2 1.375 34,9 1 3999 KOS 1 1.50 38,1 knock-out holes. 1.750 44,5 1-1/4 4000 KOS 1-1/4 1.91 48,4 .47 12,0 Lock firmly in boxes up to 1/8 2.000 50,8 1-1/2 4001 KOS 1-1/2 2.16 54,9 .45 11,5 thick, except for Part Number 4002 Multiple Locking Steps for Panel Thickness up to .250 (6,4 mm) (KOS 2) and Thick Panel Knock-Out .875 22,2 1/2 3991 KOST 1/2 1.02 25,8 Seals (KOSTs) which lock firmly in boxes up to 1/4 thick. 1.093 27,8 3/4 3992 KOST 3/4 1.22 31,0 .56 14,3 1.375 34,9 1 3993 KOST 1 1.50 38,1 Locking fingers in fractional increments up to the maximum 1.750 44,5 1-1/4 3994 KOST 1-1/4 1.91 48,4 panel thickness. 2.000 50,8 1-1/2 3995 KOST 1-1/2 2.16 54,9 .58 14,7 Approximate Head Thickness: 2.500 63,5 2 4002 KOS 2 2.73 69,3 .75 19,1 .06 (1,6 mm). Thickness may vary. Standard color silver gray. To adapt a Knock-Out to accept a A B Heyco Strain Relief, see page 4-37 for Knock-Out Adapters in the Heyco Catalog . Heyco Nylon V-0 Knock Out Seals Multiple Locking Steps for Panel Thickness up to .13 (3,2 mm) Mounting Hole Diameter Range: 1/2 to 1-1/2 Electrical Knock-outs (.875 to 2.000 nominal) MOUNTING TRADE SIZE PART NO. DESCRIPTION PART DIMENSIONS Molded from a nylon material which, HOLE AB in the event of a fire, will not burn DIAMETER Black Head Diameter Overall Height and will not produce toxic gases. in. mm. in. mm. in. mm. Also formulated for sunlight resistance875 22,2 1/2 2706 HFP 875 1.02 25,8 1.093 27,8 3/4 2729 HFP 1093 1.22 31,0 1.375 34,9 1 2759 HFP 1375 1.50 38,1 .45 11,5 1.750 44,5 1-1/4 2779 HFP 1750 1.91 48,4 2.000 50,8 1-1/2 2789 HFP 2000 2.16 54,9 Standard color black. Material Nylon 6/6 Certifications Recognized under the Component Program of Underwriters Laboratories, Quick File E51579 Certified by Canadian Standards Association, File 8919 Flammability Rating KOS: 94V-2, HFP 94V-0 Specs Temperature Range -40F (-40C) to 221F (105C) 6-37 1-800-526-4182 732-286-1800 (NJ) FAX: 732-244-8843 www.heyco.comX-ON Electronics Largest Supplier of Electrical and Electronic Components Click to view similar products for Conduit Fittings & Accessories category: Click to view products by Heyco manufacturer: Other Similar products are found below : M3231GAB M3231GAC M3231GAE M3231GL M3231GT VC-937-16/RED VC-562-16/RED VC-1125-16/RED DM0240-1/2A 3408B G6002 M4340GAE C2016-P C2012-P 3407B 1660-P 561-87BG11BLK 561-75BG11B 1.533.1201.50 1.533.1601.51 1.533.4001.50 1.533.5001.50 BVNV-P428 BVBV-P366 2276 2663-P 3405B C2070-P 3582V 4975 2644-P 2955 M50 2404-P 2291 2133-P 3048F VC12516 RC156-0500 DM0523-1/2A 1035A DMS0250-1A DMS0313-1A 1040A 1050A R1/8A DMPC0490-1/2A DMPC0521-1/2A DMPC0552-1/2A 1070A R1/2A