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HTT4-KTM
HTT4-KTM
HTT4-KTM Illustration
HTT4-KTM Illustration
HTT4-KTM Packaging
HTT4-KTM Packaging

Simpson Strong-Tie is the market leader in holdown brackets. The HTT4 is designed for heavy-duty holdown applications including external and internal 15kN bracewalls for concrete floors in accordance with NZS 3604:2011.

The HTT4 Bracewall Holdown Kit is ideal for retrofit or new construction projects where homeowners and builders require a superior holdown bracket with less joint slip or fastener/connector deformation.

Bracewall Holdown Kit Includes: (2) HTT4, (2) THD12150MG, (36) SD#10 x 38mm, (1) Installation instructions

Material
  • HTT4: Carbon Steel 3.1mm thick
  • THD & SD: Carbon Steel
Finish
  • HTT4: Z275 Galvanised
  • THD & SD: Mechanically Galvanised
Features & Benefits
  • Designed for external and internal braced walls for concrete floors constructed in accordance with NZS 3604:2011
  • Can be installed anytime before plasterboard or wall lining 
  • The load capacities are applicable for both 20MPa and 17MPa concrete strengths
  • The HTT4 Tension Tie & Holdown Bracket has a multi ply seat formed from a single piece of steel, provides extra strength
  • The Titen HD® Heavy Duty Screw Anchor has serrated cutting teeth and patented thread design, which reduce installation torque, enable quick and easy installation
  • Uses Strong-Drive® SD#10 x 38mm Connector screws including an unique screw pattern that provides less joint slip or fastener/connector deformation
Installation
Applications
  • External and internal braced wall applications
  • Retrofit or new construction projects
Approvals
Model No. Table

HTT4 Bracewall Holdown Kit Technical Data

Model No.

HTT4 Dimensions (mm)

Anchor & Fasteners

Framing Information

Characteristic Load, Rk (kN)

W

H

Foot Projection

Distance Post to Bolt (CL)

Anchor Bolt

Post Fasteners (No. - Dia. x Length) (mm)

HTT4-KTM

65

315

60

33

THD12150MG

18 – SD#10 x 38

Suits 90mm and 140mm wall Framing

15 kN Uplift

  1. Characteristic capacities where derived using EM1 as referenced in NZS 3604.

 

HTT4 Bracewall Holdown Kit Installation Data

Installation Data

Description

Millimetre

Anchor Installation Data

Drill Hole Diameter

12

Maximum Diameter of Drill Bit

12.5

Drill Depth

105

Nominal Embedment Depth

95

Concrete Thickness, Edge Distance and Spacing

Minimum Concrete Thickness

150

Minimum Edge Distance

48

Minimum Spacing

80

 
Brochures & Catalogues

Brochures and Catalogues

PDF icon Flyer - HTT4 Bracewall Holdown Kit
Installation Guides
Technical Data & Docs
CAD Library
Masterspec
Inspiration

Inspiration

Request a Demo

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Structural Connections

 

Unmatched Quality from the Truss to the Foundation

With nearly 60 years of field and R&D experience, Simpson Strong-Tie® timber connectors are manufactured to the industry's highest standards. From framing angles to straps to heavy-duty joist hangers, we offer the most diverse product line so that you have the right product for the job.

Simpson Strong-Tie® connectors offer unmatched quality with laboratory and field testing, and are backed by our uncompromising commitment to customer service. As the company that built the connector industry, you can count on Simpson Strong-Tie® to work closely with builders, engineers and building officials to deliver innovative, building code-compliant solutions to help build safer, stronger structures economically. Download the Timber Connectors NZS 3604 Catalogue.

Timber Connectors

From testing to service to availability, everything we do is engineered to ensure your project's success. With every product, you know you are getting the quality, value, service and on-time delivery that we have built our reputation on for the past 60 years.

From straps and ties to joist hangers and much more, Simpson Strong-Tie® structural connectors increase the strength and safety of timber-frame structures. Each connector is unique to Simpson Strong-Tie and is designed for specific applications without the need to adapt metal plating to suit a connection. Download the Timber Construction Connectors Catalogue (2016-2018).

Steel Frame Connectors

From fully tested and engineered connectors and clips Simpson Strong-Tie® provides comprehensive structural solutions for cold-formed steel construction. From steel-to-steel connections to full-scale lateral solutions and curtain wall connectors, we remain committed to developing new technology that helps to advance the cold-formed steel industry.

Find out how Simpson Strong-Tie timber connectors can help you build the right way every day. Download the Cold-Fromed Steel Construction Connectors Catalogue.