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Hex Drive Threaded Inserts-Choose size Zoom

Hex Drive Threaded Inserts-Choose size

product name price quantity total
1/4" -20 Hex Drive Threaded Inserts (8 per Pack) Item #: 31872
In Stock
 
$6.99

Pack 		$6.99
Find in Store
5/16" -18 Hex Drive Threaded Inserts (8 per Pack) Item #: 31880
In Stock
 
$6.99

Pack 		$6.99
Find in Store
1/4" -20 Hex Drive Threaded Inserts (8 per Pack) Item #: 31872
In Stock
 
Price:
$6.99
Pack
Quantity:
Total: $6.99

Find in Store
5/16" -18 Hex Drive Threaded Inserts (8 per Pack) Item #: 31880
In Stock
 
Price:
$6.99
Pack
Quantity:
Total: $6.99

Find in Store

Overview

Use for a tight grip! Larger teeth give increased holding strength, ideal for end grain and particle board applications. Made of die cast zinc alloy. Has a self tapping harpoon thread. Thread listed is the size of the internal thread size.

What's included

(1) Pack of Hex Drive Threaded Inserts

Technical Details

Questions and Answers

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Browse 8 questions Browse 8 questions and 51 answers
Why did you choose this?
Rockler Store
Home project
James G on Jun 4, 2017
Because you didn't have 3/8" in stock...
David W on Jan 25, 2017
Home project
James G on Jun 4, 2017
needed to repair loose legs on dining chairs
Mike M on Apr 25, 2017
Because you didn't have 3/8" in stock...
David W on Jan 25, 2017
to secure the legs
STEVE L on Jan 13, 2017
Loose legs on dinning room chairs
Danny S on Jan 9, 2017
Part needed
Thomas D on Dec 31, 2016
easy to thread in with the hex drive
Jon M on Dec 15, 2016
poor quality - they blew out and cracked when I tried to install them
EarlS on Nov 18, 2016
To turn seasonal handles for cheese knife kit, I have that kind of wife
Jeffrey D on Nov 8, 2016
I bought these to hold parts of a bed, I am building, together to aid in disassembling when it has to be moved.
Stanley G on Oct 25, 2016
Recommended in the plans I purchased and not available locally.
Tom P on Jul 24, 2016
outstanding in construction of outdoor furniture. Sturdy and easy to install
Patrick D on Jun 30, 2016
I needed them to fix a chair
Thomas C H on Apr 10, 2016
need it for speaker stand
RANDY J on Apr 1, 2016
building a quilt ladder
Ronald D on Mar 13, 2016
for the bean bag game I make
Bruce M on Mar 1, 2016
Project
Ron O on Feb 26, 2016
Needed for a project.
Ron S on Jan 27, 2016
They work perfectly for my applications when building collapsable display stands
Gill W on Jan 8, 2016
to repair chairs
ralph c on Jan 3, 2016
Making table legs and this item is similar to the existing ones
Kenneth K on Jan 3, 2016
Making jigs.
Robert G on Jan 1, 2016
Needed this size.
James L on Dec 19, 2015
i needed new ones 2 replace the broken. also near impossible 2 find locally
tom p on Dec 2, 2015
For a furniture prototype.
Kim L on Nov 24, 2015
pull knobs
Wade M on Nov 15, 2015
To make a take down quilt rack
Patrick C on Oct 15, 2015
Needed to complete a project.
James C on Sep 27, 2015
needed for inventory
Bob G on Sep 12, 2015
I'm building a modular toy train layout which I tell myself is for the grand children. These threaded inserts will become the receiver for 5/15" x 18 appliance bolts to be used as leveling devices. Appliance bolts were about 1/5 the price of commercial leveling devices. These hex threaded inserts are perfect for the job.
John H on Sep 2, 2015
Repair a broken chair
Delia C on Jul 25, 2015
Needed them
El Guapo on Jul 10, 2015
plans called for these
Dave P on Jun 29, 2015
because I know what to order
John B on Jun 22, 2015
Best way I found to incorporate adjustable feet on tables. Also use them to assemble projects such as a custom bed frame so it can be taken apart prior to a move.
Dennis D on Jun 5, 2015
need
Gaylord A on May 16, 2015
Woodsmith issue 218 has a project that calls for this item.
L O on May 3, 2015
Needed them to repair my dining room furniture
Bruce H on May 1, 2015
needed to repair loose legs on dining chairs
Mike M on Apr 25, 2017
to secure the legs
STEVE L on Jan 13, 2017
Best threaded insert to use in 3/4 plywood edge to draw edge into a dado and then be able to take apart and reassemble?
Stewart O on May 9, 2015
BEST ANSWER: If you are talking about inserting these into the edge of the plywood that you will insert into a dado, I would not recommend it. They work by forcing themselves into a hole intentionally drilled too small. That's so that they can mash (as opposed to cut) the necessary threads they need for their holding power. This very action will split apart your plywood. These things work very well for their intended use, in the flat side of a piece of wood, even plyood.
what can i use to thead dowels and the corresponding hole?
A shopper on Aug 19, 2015
BEST ANSWER: To join dowels, I always use the threaded insert with steel hanger bolts. One dowel gets the insert and the corresponding dowel gets the steel hanger bolt and screw the dowels together. Note: be sure to find the center of each dowel before inserting the hardware.
Steel Hanger Bolts-Steel Hanger Bolts
Steel Hanger Bolts-Steel Hanger Bolts
how deep are the internal threads? how long is the overall length of the insert?
A shopper on Aug 5, 2015
BEST ANSWER: The threads go all the through. This is not a blind insert. Overall length is 13/16"
what hole size is required for the 1/4"-20 insert and how deep should the hole be drilled?
Matt T on Jun 24, 2016
BEST ANSWER: For softwoods, 11/32" is recommended, for hardwoods 3/8" is recommended.An 11/32" drill bit is hard to find. Not a standard size.
The hole depth depends upon the connector bolt length. Subtract the thickness of the wood being attached from the connector bolt length, & I add 1/4" to that number to keep from bottoming out.
What is recommend hole diameter for the 5/16-18 in soft wood?
Fran B on Feb 13, 2017
BEST ANSWER: 7/16 in soft wood, 1/2 in hard; use a drop of CA glue when final inserting, works well for me.
How long is the 1/4"-20 threaded insert?
John mc. on Aug 28, 2016
BEST ANSWER: 13/16"
What is recommend hole diameter for the 5/16-18 in hardwood like oak, maple, or walnut?
Mike F on Apr 11, 2016
BEST ANSWER: I wouldn't use this in a hardwood. It is tapered, and a hardwood has little or no give. Rockler has other options where the shaft is straight.

Reviews

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4.1 / 5.0
30 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
16
7
2
5
0
The secret with these inserts is...
The secret with these inserts is using the correct size pilot hole. My suggestion is that you test fit an insert into a scrap of the wood you are using to make sure you find the right size pilot hole that will allow the insert to be put in place without too much resistance that the insert breaks or you split your workpiece. Also, I put these inserts in by hand using a double nuted bolt that I screw all the way into the insert and then lock the bolt with a double nut and use a small socket and ratchet to drive it in place. You will not break the insert this way. If you are trying to drive these inserts with a power drill you are asking for trouble.
June 13, 2012
Worked perfectly. I can't understand why...
Worked perfectly. I can't understand why others had trouble, because these were so easy to install: Drill a hole; Put a hex drive on a socket wrench; Turn.I've used the 1/4" size in Maple and Red Oak--both end grain--with absolutely no resistance, breakage, splitting, etc. And they hold tight, unlike some of the T-nut options out there.I used a 7/16" bit for both, but if you simply read the back of the package, the suggested bit sizes are listed for hardwood or softwood applications. A 15/32" bit is recommended for hardwood (NOT a 3/8" hole, as others mentioned). I always start with a smaller hole first, however, because you can make a hole bigger, but not smaller! The 7/16" hole worked on the first test--held fast, and the insert went in with no more torque than needed to run a machine screw.Great item.
November 18, 2009
Worked extremely well in end grain....
Worked extremely well in end grain. Used the recommended bit size and a 3/8 drive hex metric socket, 3' extension and ratchet handle. Used parafin to lube threads before installing. Very easy and smooth install.
November 23, 2008
Did the job as advertised.
I build "retro-industrial" furniture and use these in the bottoms of plank table tops to attach leg structures to the tops. Rather than simply running wood screws into the top, these allow the use of machine screws that can be installed and removed numerous times without tearing out of stripping wood-screw holes. Especially useful for any application where things need to be taken apart and reassembled occasionally.
June 12, 2015
Purchased
 over 2 years ago
Woodworking Experience:
Advanced
Threaded Ibserts
Boght 40 for floor leveler a for modular train table. Worked perfectly.
November 19, 2015
Purchased
 1 year ago
Woodworking Experience:
Intermediate
Threaded Inserts
It works perfect. The set of chairs is back to normal.
October 18, 2016
Purchased
 9 months ago
Woodworking Experience:
Intermediate
metal threaded inserts
They are very useful for take apart & reassemble Furniture such as back Paneling of A desk the center panels of A desk that has 2 cases of drawers & a chair opening in center,The panels at the back of the Chair opening need to be assembled with threaded inserts on right & left side so it can be carried to the customers house in 3 peices & reassembled in the house so it will go through all interior doors.
April 15, 2017
Purchased
 3 months ago
Woodworking Experience:
Advanced
excellant
easy to install & v. strong providing you dont over- boar the hole
October 25, 2015
Purchased
 1 year ago
Woodworking Experience:
Advanced
worked as expected
April 4, 2016
Purchased
 1 year ago
Woodworking Experience:
Intermediate
I used the inserts to repair...
I used the inserts to repair 33 office chairs that had been delivered and set up by a vendor. The people who assembled and installed the previous inserts did not tighten them even hand tight. When I was called upon, months later, to repair the chairs, I used your inserts which were slightly larger and therefore were a perfect fit for the project. I used an 8mm Allen driver in a half-inch driver drill to drive and torque the bolts. Perfect solution to a problem that could have been prevented, but wasn't.
April 20, 2009

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