Model # 20511

Internet #100133208

Store SKU #839647

Halex 3/8 in. Non-Metallic (NM) Twin-Screw Cable Clamp Connectors (5-Pack)
0051411205119

Halex

3/8 in. Non-Metallic (NM) Twin-Screw Cable Clamp Connectors (5-Pack)

  • Features a reversible locknut to preserve grounding
  • Twin screw
  • High-strength die-cast zinc alloy
$166 /bag

Frequently Bought Together

Product Overview

Turn to the 3/8 in. Twin Screw Non-Metallic Cable Clamp Connectors (5-Pack) to join non-metallic sheathed cable and flexible cord to steel outlet boxes or other metal enclosures. A reversible locknut cuts through protective coatings on boxes and enclosures to preserve grounding. This connector meets UL and CSA requiremenets.

  • Connect non-metallic sheathed cable and flexible cord to steel outlet boxes or other metal enclosures
  • Body and locknut are die-cast of high-strength zinc alloy
  • Zinc-plated steel clamp and screws
  • Reversible locknut cuts through protective coatings on boxes and enclosures to assure ground continuity
  • Fits 1/2 in. knockout
  • For indoor use only
  • Screws compatible with Phillips, slotted and square screwdrivers
  • Resists corrosion
  • UL and CSA safety listings

Info & Guides

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Specifications

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Warranty / Certifications

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Customer Questions & Answers

Can I use this to clamp two 12/2NM cables or is only suitable for one?

Can I use this to clamp two 12/2NM cables or is only suitable for one?
Asked by: Cjh
This is only designed for a single cable.
Answered by: CommunityAnswer
Date published: 2017-04-19

Can this clamp works for 6/3 Romex wire?

Asked by: Vic
No, this is for 14/2, 14/3, 12/2, and 12/3 only. For 6/3, I would recommend AT LEAST 3/4" connectors.
Answered by: Nick
Date published: 2016-07-04

Is this for half inch knock outs?

3/8 is cable size correct? The KO size is 1/2 inch? Can I pass two 14/3 romex cables through a single cable clamp?
Asked by: Leop

Does the Jar packed rough electrical hardware items help over contractor- carton packed item? How

Help me understand the benefits of jar packed items. Any suggestions for improvement? share your experience of the change moving from Carton to Jar.
Asked by: Greg
  • y_2017, m_6, d_23, h_12CST
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Customer Reviews

3/8 in. Non-Metallic (NM) Twin-Screw Cable Clamp Connectors (5-Pack) is rated 4.1 out of 5 by 9.
Rated 5 out of 5 by from Excellent, easier to retrofit later These are excellent clamps. I'm in the process of retrofitting a house that has old metal boxes and 2 piece clamp connectors. The advantage with these is that you can loosen the wire from within the box, while 2 piece clamps can only be removed from outside... That means I have to destroy the box, the wire, or open the wall to get the clamps out. If these clamps were in the box, I could have removed the ring, extracted the box and save both the wire and box. I strongly recommend these to anyone using metal boxes. I would note the they have contractor 100 packs in store sometimes, but I haven't seen them online. Big cost savings in bulk as you can imagine. Otherwise this 5-pack is a better deal than individual at least.
Date published: 2013-11-26
Rated 1 out of 5 by from why are USA made ones being replaced by ones made in India...is there such a price difference????? why are USA made ones being replaced by ones made in India...is there such a price difference?????
Date published: 2016-11-22
Rated 5 out of 5 by from Great Deal Bought these for a Home Improvement Project in mny basement.
Date published: 2016-09-27
Rated 4 out of 5 by from Good product at a decent price.. Much cheaper than Lowes. Good product at a decent price.. Much cheaper than Lowes.
Date published: 2016-12-20
Rated 4 out of 5 by from One minor gripe Can't find much to complain about with these guys, except that occasionally the screws are long enough that when tightened they collide with something else nearby. I suppose they have to be as long as they are in case you want to clamp two cables in same knockout. Perhaps they should be sold in two flavors - one with long screws and one with shorter screws.
Date published: 2016-04-26
Rated 5 out of 5 by from Excellent Clamps! These work great, for new work and for retrofitting. Attach easily to junction boxes and screw on tight. they keep romex cable very tight and secure. I would recommend anyone needing to run romex into junction boxes.
Date published: 2014-03-25
Rated 3 out of 5 by from My Bad, Trade Size, Who Knew? Yesterday I submitted a negative review about this product. Then it came to me after waking from a good sleep. THE DARN LABLING INDICATED "TRADE SIZE". I had found an old, but unused light fixture with 1/2" knockouts. These were 'real world' measurements, with 1/2" measuring 1/2" true. I've been doing electrical wiring for 60+ years, but not as an 'electrician'. I've always been on the smart side of the electrical world, . . ELECTRONICS and Communications. I didn't know that electricians had stupid secrets for craft protection. Sorry about the negative review. Ray
Date published: 2014-11-09
Rated 5 out of 5 by from Excellent item Excellent item. Used for my recessed lighting. Will use again in the future.
Date published: 2016-02-10
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