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Model #TP37

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TP 3-1/8 in. x 7 in. 20-Gauge Galvanized Tie Plate

  • A simple, versatile solution for a wide range of connections
  • Staggered nail pattern reduces splitting
  • Quick and easy installation
  • See More Details

Frequently Bought Together


Product Overview

Simpson Strong-Tie straps and plates join and reinforce joints with simple, versatile solutions for a wide range of connections. Available in many lengths, widths and thicknesses, straps can be used on the wide or narrow face of lumber for light repairs or heavy-duty projects. Many straps are designed to be used back-to-back on a piece of lumber without fastener interference.
  • A versatile and easy-to-use tie plate for splicing and miscellaneous wood-to-wood connections
  • Ideal for reinforcing wood-to-wood connections on flat members
  • Staggered nail pattern for a secure connection that resists splitting
  • Available flat (TP) or with a flange (TPA) for added strength
  • Width: 3-1/8-in
  • Length: 7-in
  • Made from 20-gauge steel
  • Galvanized (G90) for extra corrosion resistance
  • Install with (32) 0.131 in. x 2-1/2 in. nails, 0.131 in. x 1-1/2 in. nails or #9 Strong-Drive SD screws
  • Shop all Simpson Strong-Tie here.

Info & Guides

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Product Depth (in.)
Product Length (in.)
Product Width (in.)
3.125 in


Color Family
Connector Finish
G90 Galvanized
Connector recommendation
Tie Plate
Fasteners Included
Fasteners Not Included
No Additional Features
Number of Pieces
Package Quantity
Product Weight (lb.)
Staggered Nail Pattern
Strap Type

Warranty / Certifications

Manufacturer Warranty
Limited Warranty

Questions & Answers


Is this plate pliable? I want to be able to bend it to cover part of a wooden fence post.

Asked by Dave January 19, 2021

Yup. It is sheet metal with holes in it. If you have a bench vice, you can make straight bends.

I have a split in a 4 x 4 load bearing post would TP37 be appropriate to cover/reinforce the split?

Asked by Bobby December 8, 2020

Use a HTP which is thicker gauge (16 ga.) and made to tension loads up to a certain point. Check the Simpson Strong-Tie specs for exact figures. It will do the job whereas the TP series is more of a non-structural mending plate type of connector. Using the proper type & number of fasteners is important too.

Can these be used to build roof trusses?

Asked by wondering September 12, 2020

You can, but a HTP would be better. Also, unless you have engineering/architectural design qualifications, and especially where a govt. agency inspection is required, I would strongly not recommend doing so. JMHO. :)

1: Can I use this to join two 2" x 8" x 8' board with the 7" plate placed long ways and the 3-1/8...

Asked by mick May 7, 2020

You'll only have a little over 1.5" of "bite" on each board if you orient them like you propose. The boards will be joined, but won't have a very strong connection. The wood is liable to split screwing that close to the edge. I suggest you put two plates side by side on each side of your 2" x 8" boards. The plates aren't that expensive. Also, if you use 2.5" screws, they'll poke through the other side of the 2" x 8" board, since a board of that dimension is actually only 1.5" thick. No problem using a #8 screw, but a 1.25" length would be better. I used the Simpson Strong-Tie plates to join 2" x 4" pressure treated shed rafters where the roof pitch changed for an overhang. Philips head screws pulled in and made a "dimple" in the plate to make them almost flush. As for your application on the ground into pressure treated lumber, the plates are galvanized, and will take years to rust. You could paint them if you want them to last longer. Use marine epoxy and they'll last even longer.

can this be used to sister a splice on 2X8 double rim joist on deck that has rot on both joists a...

Asked by Linda September 28, 2019

If the rim joist bears no weight and is non-structural, this plate should work to simply mend in a new piece

can I join 2 4x4s side by side with this?

Asked by outdoorbob August 2, 2019

Yes, for non structural applications

What bolt or hex lag screw size would work on this? I need to use a bolt or hex lag screw on this...

Asked by BMW November 17, 2016

8d nails or #9 SST 1-1/2" screws

Are these approved for structural applications?

Asked by Aaron July 6, 2016

Nope. You would have to use the HTP series connectors which are a thicker gauge and have limited load-tensioning ability.

Will thease plates be strong enough to splice 2X4" pine wood together to support a 1/2" dry wall tottal span is 13feet

Asked by Terry March 8, 2016

Nope, these are not meant for a load

Can this product be used with treated lumber?

Asked by GAE March 7, 2016


TP 3-1/8 in. x 7 in. 20-Gauge Galvanized Tie Plate - page 2

Customer Reviews

  • 4.8
    out of 57 reviews
  • 100% recommend this product
Filter by:
Showing 1-10 of 57 reviews
Very handy plate for tying/mending pieces of wood together. I used these during a fence installat...
Very handy plate for tying/mending pieces of wood together. I used these during a fence installation where some of my posts were off due to very large tree roots. I basically sistered 2x4s to the fence stringers to so I could secure the fence panels to a post that was about 6" too far away. The fence has panels on both sides, so the plate and unsightly work was hidden. The plate is a relatively thin 20 gauge but together with a 6 inch lag bolt, it was a solid mending of the two wood pieces. The plate has 32 staggered holes, I used 16 with Simpson Strong Tie #9 screws. You can also use 8d nails. The plate and screws are galvanized so they will outlive the fence itself.
by SteveVA
Exactly what I needed for my project...
Exactly what I needed for my project
Works great. no issues....
Works great. no issues.
by HomeDepotCustomer
Easy to use and I'm install. Light weight with plenty of perforations. Have an old out building t...
Easy to use and I'm install. Light weight with plenty of perforations. Have an old out building that requires some rafter work. These strong ties did the job.
by Decker
I used one of these to repair a connection of...
I used one of these to repair a connection of two fence sections at my mother-in-law's house until she can get the fence properly repaired. The 7 inch length allowed a good span to cover the opening and provide rigidity.
by Stevo
Met my needs perfectly....
Met my needs perfectly.
by LEE
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 57 reviews