FastenMaster ThruLok 6-Piece 6-1/4 in. Screw Bolt Fastening System-FMTHR614-6 - The Home Depot


Model # FMTHR614-6

Internet # 202618093

Store SKU # 341684

ThruLok 6-Piece 6-1/4 in. Screw Bolt Fastening System

FastenMaster ThruLok 6-Piece 6-1/4 in. Screw Bolt Fastening System

This item has been discontinued.
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$19.24 / each


Model # FMTHR614-6

Internet # 202618093

Store SKU # 341684

Store SO SKU # 336802

Save time, money and labor costs! ThruLok is the first fastener engineered to make a code compliant connection for your 4x4 decking posts and notched carrying beams without pre-drilling! ThruLok is over 15 times faster than the traditional method of installing posts and the only tool required is an 18 Volt drill. No need to predrill, hammer in a 1/2 in. carriage or through-bolt, and hand wrench the nut to tighten on the back. ThruLok zips right in and has a patent-pending encapsulating nut that self tightens on the end saving time and labor.

  • Manufactured in three lengths: 6 1/4 in. - 4x4 to 2x rim
  • Costs significantly less per piece than 1/2 in. galvanized carriage or through bolts, washers and nuts. Save even more money.
  • ThruLok comes preassembled eliminating the need to find different components.
  • Guaranteed corrosion resistance for the life of the project. ACQ approved
  • Free 5/16 in, magnetic hex drive bit in every pack
  • American made


Assembled Depth (in.)  1.5 in  Assembled Height (in.)  6.75 in 
Assembled Width (in.)  1.5 in  Fastener length (in.)  6.25 
Head diameter (in.)  0.226  Screw Length  6-1/4 in 
Coated  Drive Style  External Hex 
Driver bit included  Yes  Fastener Callout Size  6-1/4" 
Fastener Head Style  Hex  Fastener Plating  Other 
Fastener Thread Type  Coarse  Fastener Type  Wood Screw 
Fastener/Connector Material  Steel  Finish  Silver 
Finish Family  Silver  Head Style  Hex 
Indoor/Outdoor  Outdoor  Measurement Standard  SAE 
Package Quantity  Primary Use  Replaces Carriage or Through-bolts in deck applications including decking posts or carrying beams 
Product Weight (lb.)  1.64 lb  Returnable  90-Day 
Self drilling  Yes  Self tapping  Yes 
Size  #0  Tamper Resistant  No 
Warranty / Certifications
Manufacturer Warranty  FastenMaster fully guarantees ThruLok against rusting or streaking for the lifetime of the project. Please see the following link for further details at: 


Rated 5.0 out of 5 by 3 reviewers.
Rated 5.0 out of 5.0 by Great product in every way I needed to bolt a deck/porch beam to four support posts. The cost of the Thru-lok bolts was comparable to what I would have paid for lag/carriage bolts (and washers/nuts). I was able to bolt up all four posts in less time than it would have take taken to pre-drill the bolt holes. I'll never use anything else again. September 28, 2012
Rated 5.0 out of 5.0 by Great product. Quick easy and painless installation. Best replacement for carriage bolts. Saved so much time not pre-drilling 16 connections. Had a harder time finding them in stock. April 29, 2014
Rated 5.0 out of 5.0 by way better than any carriage bolt ever I used these for my deck posts and they saved me so much time. they also look great. I would use them agaiun in a heartbeat. April 23, 2012
  • 2015-04-15T10:48:32.943-05:00
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