3994

3997 HEYCO | Alldatasheet

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Technical content

“Stay Connected” with Bushings, Grommets, HEYcaps & Plugs 6-37 1-800-526 -4182 • 732-286 -1800 (N J) • FAX: 732-244-8843 • w w w .heyco.com Q uick Specs H eyco N ylon K nock O ut Seals and T hick Panel K nock O ut Seals M ounting H ole Diam eter Range: 1/2˝ to 2˝ Electrical Knock-outs (.875˝ to 2.500˝ nom inal)

• Plug electrical knock-outs .
• M olded in silver gray color to resem ble galvanized steel.
• Install quickly w ith fingertip pressure (no tool required).
• Econom ical.
• M ultiple trade sizes fit 1/2˝ to 2˝ knock-out holes.
• Lock firm ly in boxes up to 1/8˝ thick, except for P art N um ber 4002 (KO S 2) and Thick P anel Knock-O ut S eals (KO S T’s) w hich lock firm ly in boxes up to 1/4˝ thick.
• Locking fingers in fractional increm ents up to the m axim um panel thickness.
• A pproxim ate H ead Thickness: .06˝ (1,6 m m ). Thickness m ay vary.
• To adapt a Knock-O ut to accept a H eyco S train Relief, see page 4-37 for Knock-O ut A dapters in the H eyco Catalog . M aterial N ylon 6/6 Certifications Recognized under the Com ponent P rogram of U nderw riters’ Laboratories, File E51579 Certified by Canadian S tandards A ssociation, File 8919 Flam m ability Rating KO S : 94V -2, H FP 94V -0 Tem perature Range -40°F (-40°C) to 221°F (105°C) M O UNTING TRAD E SIZE PART NO . D ESCRIPTIO N PART D IM ENSIO NS H O LE Silver AB D IAM ETER Gray H ead D iam eter O verall H eight M ultiple Locking S teps for P anel Thickness up to .125˝ (3,2 m m ) .875 22,2 1/2 39 9 7 KO S 1/2 1.02 25,8 1.093 27,8 3/4 39 9 8 KO S 3/4 1.22 31,0 .45 11,5 1.375 34,9 1 39 9 9 KO S 1 1.50 38,1 1.750 44,5 1-1/4 4000 KO S 1-1/4 1.91 48,4 .47 12,0 2.000 50,8 1-1/2 4001 KO S 1-1/2 2.16 54,9 .45 11,5 M ultiple Locking S teps for P anel Thickness up to .250˝ (6,4 m m ) .875 22,2 1/2 39 9 1 KO S T 1/2 1.02 25,8 1.093 27,8 3/4 39 9 2 KO S T 3/4 1.22 31,0 .56 14,3 1.375 34,9 1 39 9 3 KO S T 1 1.50 38,1 1.750 44,5 1-1/4 39 9 4 KO S T 1-1/4 1.91 48,4 2.000 50,8 1-1/2 39 9 5 KO S T 1-1/2 2.16 54,9 .58 14,7 2.500 63,5 2 4002 KO S 2 2.73 69,3 .75 19,1 S tandard color silver gray. H eyco N ylon V-0 K nock O ut Seals M ultiple Locking S teps for P anel Thickness up to .13˝ (3,2 m m ) M ounting H ole Diam eter Range: 1/2˝ to 1-1/2˝ Electrical Knock-outs (.875˝ to 2.000˝ nom inal) M O UNTING TRAD E SIZE PART NO . D ESCRIPTIO N PART D IM ENSIO NS H O LE AB D IAM ETER B lack H ead D iam eter O verall H eight .875 22,2 1/2 2706 H FP 875 1.02 25,8 1.093 27,8 3/4 2729 H FP 1093 1.22 31,0 1.375 34,9 1 2759 H FP 1375 1.50 38,1 .45 11,5 1.750 44,5 1-1/4 2779 H FP 1750 1.91 48,4 2.000 50,8 1-1/2 2789 H FP 2000 2.16 54,9 S tandard color black.
• M olded from a nylon m aterial w hich, in the event of a fire, w ill not burn and w ill not produce toxic gases . A lso form ulated for sunlight resistance. Consult H eyco for our Com plete Line of D om e Plugs A B