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SKU: MIT420

Simpson Strong-Tie MIT420 Top Flange I-Joist Hanger - G90 Galvanized

ICC Certified

Sizes

Double 2-5/16" X 11-7/8" Double 2-5/16" X 14" Double 2-5/16" X 9-1/2" Double 2-1/2" X 11-7/8" Double 2-1/2" X 14" Double 2-1/2" X 9-1/2" 1-3/4" X 11-7/8" 1-3/4" X 14" 1-3/4" X 16" 1-3/4" X 9-1/2" 2-1/8" X 11-7/8" 2-5/16" X 11-7/8" 2-5/16" X 14" 2-5/16" X 16" 2-5/16" X 18" 2-5/16" X 20" 2-1/2" X 11-7/8" 2-1/2" X 14" 2-1/2" X 16" 2-1/2" X 18" 2-1/2" X 20" 3-1/2" X 11-7/8" 3-1/2" X 14" 3-1/2" X 16" 3-1/2" X 18" 3-1/2" X 20" 3-1/2" X 9-1/2" 4-1/8" X 11-7/8" 4-1/8" X 14" 4-1/8" X 9-1/2" 4" X 9-1/2" 4-5/8" X 16" 4" X 11-7/8" 5" X 16"
$1999
Ships today when you order in the next 8 hours and 51 minutes

Description

The Simpson Strong-Tie MIT Top-Flange Hanger offers a reliable, concealed connection for supporting engineered wood I-joists in a wide variety of framing applications. Designed for versatility and strength, this hanger meets the demanding needs of residential, multifamily, and commercial construction.

Crafted with precision-formed steel and tested to exceed code requirements, the MIT hanger provides solid bearing support and simplified installation. Its top-flange design installs flush with the top of the carrying member, ensuring a clean, low-profile look ideal for floor systems and tight clearances.

Whether you're working on a traditional framing job or a specialized layout with offset joists, the MIT hanger delivers performance and flexibility across a range of applications.

Installation:

  • For use with engineered wood I-joists only.
  • Requires nails or Strong-Drive SD Connector screws for installation – refer to manufacturer guidelines for proper fastener schedule.
  • Always install hangers flush with the header or beam surface.
  • Use all specified fasteners to ensure full load capacity.
  • Do not bend or modify the hanger.

Applications:

  • Floor Joist Connections: Securely connects I-joists to supporting beams in wood floor systems.
  • Multi-Family Framing: Ideal for repetitive framing layouts and tight spacing in apartment and condo construction.
  • Commercial Wood Construction: Provides high-load capacity for larger wood framing projects.
  • Flush Beam Systems: Top-flange profile allows for flush installation with minimal height buildup.
  • Offset Joist Conditions: Compatible with applications requiring minor adjustments in joist alignment.

Specifications
Width: 3-9/16"
Height: 20"
Thickness: 16 Gauge
Joist Size: 3-1/2" X 20"
For Treated Lumber: No
Finish: G90 Galvanized
Manufacturer Name: Simpson Strong-Tie
Quantity: 1
Fasteners Required: SEE PRODUCT GUIDE DOCUMENT

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Our footprint

Our nationwide network of distribution facilities offers more product selection and faster delivery times. So far we’ve made remarkable progress in our expansion efforts, effectively doubling our capacity by adding a new 47,000 sq. ft. warehouse in Simpsonville, South Carolina, in addition to our existing 60,000 sq. ft. facility in Urbana, Iowa.

Broad selection, fast delivery

Our experience

We pride ourselves on delivering a user-friendly, high quality experience online and over the phone. Our knowledgeable team of experts is readily available via phone to assist with product questions and custom pricing inquiries. We’re available Monday thru Friday from 7:00 AM – 5:00 PM CST. We look forward to supporting you on your next job.

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