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ITS/MIT/HIT Engineered Wood Product Top-Flange Hangers

ITS/MIT/HIT

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Simpson Strong-Tie offers a dedicated range of top-flange I-joist hangers that meet the unique needs of I-joists while offering superior performance and ease of installation.

ITS

The innovative ITS sets the standard for engineered wood top-flange hangers. The ITS installs faster and uses fewer nails than any other EWP top-flange hanger. The Strong-Grip™ seat and Funnel Flange™ features allow standard joist installation without requiring joist nails, resulting in the lowest installed cost. The Strong-Grip seat firmly secures I-joists with flange thicknesses from 1 1/8" to 1 1/2".

MIT/HIT — Positive-Angle Nailing (PAN)

PAN is specifically designed for I-joists when used with the MIT or HIT. With PAN, the nail hole material is not removed, but is formed to channel and confine the path of the nail at approximately 45°. PAN minimizes splitting of the flanges while permitting time-saving nailing from a better angle. See top-flange hanger tables.

Refer to joist manufacturer's literature or appropriate Simpson Strong-Tie Connector Selection Guide for actual joist sizes.

Material

  • ITS — 18 gauge; MIT, HIT — 16 gauge

Finish

  • Galvanized

Installation

  • Use all specified fasteners. Verify that the header can take the required fasteners specified in the table.
  • See product-specific installation drawings.
  • ITS — no joist nailing required for standard I-joist installation without web stiffeners. When supporting I-joists with web stiffeners or rectangular SCL member (2) 0.148" x 1 1/2" must be installed into optional triangle joist nail holes for standard installation values.
  • ITS — optional triangle nail holes may be used for additional load. See allowable load tables.
  • MIT — optional triangle nail holes may be used for increased uplift capacity. See Optional Nailing for Increased Uplift table.
  • HIT — closed PAN nail holes may be used for increased uplift capacity. See Optional Nailing for Increased Uplift table.
  • For sloped joists up to 1/4:12 there is no reduction; between 1/4:12 and up to 1/2:12, tests show a 10% reduction in ultimate hanger strength. Local crushing of the bottom flange or excessive deflection may be limiting; check with joist manufacturer for specific limitations on bearing of this type.

Allowable Loads

  • The ITS, MIT and HIT hangers have locations for optional nails if additional uplift is needed. Optional uplift nailing requires the addition of properly-secured web stiffeners. See the load tables for minimum required fasteners and allowable uplift loads.
  • For attaching to multi-ply headers, refer to technical bulletin Top-Flange Hanger Reductions for Multiple-Ply Headers (T-C-MPLYHEADR).

Options

  • Because these hangers are fully die-formed, they cannot be modified. However these models will normally accommodate a skew of up to 5°.

Related Literature

Load Tables

ITS Series with Various Header Applications

ITS Series with Various Header Applications
  1. Loads may not be increased for duration of load.
  2. Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
  3. Uplift loads are based on DF/SP lumber. For SPF/HF, use 0.86 x DF/SP uplift load.
  4. ITS uplift loads are valid for all lumber species and need not be reduced for duration of load.
  5. LVL headers are assumed to be made primarily from Douglas fir or southern pine. For LVL made from spruce-pine-fir or similar less-dense veneers, use the values found in the SPF/HF column.
  6. DF I-joists headers include flanges made from solid sawn Douglas fir, LVL made primarily of DF/SP, or LSL. For header flanges with thicknesses from 1 5/16" to 1 3/8", use 0.85 of the I-joist header load. For header flanges with thicknesses from 1 1/8" to 1 1/4", use 0.75 of the I-joist header load.
  7. SCL (structural composite lumber) is LVL, LSL, and Parallam® PSL.
  8. Web stiffeners required for the ITS Alternate Installation when installing optional joist nails for additional uplift load.
  9. Code values are based on DF/SP header species.
  10. I-joists with flanges less than 1 5/16" thick used in combination with hangers thinner than 14 gauge may deflect an additional 1/32" beyond the standard 1/8" limit.
  11. For 2 1/4"-wide joists, see Top-Flange Hangers Load Tables for allowable loads.

Optional Nailing for Increased Uplift

ITS/MIT/HIT Optional Nailing for Increased Uplift
  1. Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern.
  2. Uplift loads are based on DF/SP lumber. For SPF/HF, use 0.86 x DF/SP uplift load.
  3. Web stiffeners are required on I-joist for additional nailing.

Nailer Table

This table indicates various allowable loads for ITS/MIT/HIT hangers used on wood nailers. The header nail type must be substituted for those listed in other tables. See technical bulletin T-C-NAILUPLFT for other uplift values and options.

ITS/MIT/HIT Nailer Table
  1. Uplift loads have been increased for earthquake or wind loading with no further increase allowed. Reduce where other loads govern. See technical bulletin T-C-NAILUPLFT for additional information.
  2. Steel nailer allowable loads apply to steel header material with thickness between 1/4" and 3/4" with minimum Fy = 36 ksi. Design of steel header by Designer.
  3. 0.157"-diameter x 5/8"-long powder-actuated fastener = PDPAT-62KP. A red (level 5) or purple (level 6) load may be required to achieve specified penetration.

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
HIT318 ESR-2615 ESR-2523 RR25803 FL10667
HIT320 ESR-2615 ESR-2523 RR25803 FL10667
HIT322 ESR-2615 ESR-2523 RR25803 FL10667
HIT324 ESR-2615 ESR-2523 RR25803 FL10667
HIT418 ESR-2615 ESR-2523 RR25803 FL10667
HIT420 ESR-2615 ESR-2523 RR25803 FL10667
HIT422 ESR-2615 ESR-2523 RR25803 FL10667
HIT424 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.56/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS1.81/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.06/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.37/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS2.56/9.5 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/11.88 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/14 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/16 ESR-2615 ESR-2523 RR25803 FL10667
ITS3.56/9.5 RR25803 FL10667
MIT1.81/14 ESR-2615 ESR-2523 RR25803 FL10667
MIT1.81/16 ESR-2615 ESR-2523 RR25803 FL10667
MIT11.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT311.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT311.88-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT314 ESR-2615 ESR-2523 RR25803 FL10667
MIT314-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT316 ESR-2615 ESR-2523 RR25803 FL10667
MIT318 ESR-2615 ESR-2523 RR25803 FL10667
MIT320 ESR-2615 ESR-2523 RR25803 FL10667
MIT3511.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT3511.88-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT3514 ESR-2615 ESR-2523 RR25803 FL10667
MIT3514-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT3516 ESR-2615 ESR-2523 RR25803 FL10667
MIT3518 ESR-2615 ESR-2523 RR25803 FL10667
MIT3520 ESR-2615 ESR-2523 RR25803 FL10667
MIT359.5-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT39.5-2 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.12/11.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.12/9.5 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.28/11.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.28/14 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.28/9.5 ESR-2615 ESR-2523 RR25803 FL10667
MIT4.75/16 ESR-2615 ESR-2523 RR25803 FL10667
MIT411.88 ESR-2615 ESR-2523 RR25803 FL10667
MIT414 ESR-2615 ESR-2523 RR25803 FL10667
MIT416 ESR-2615 ESR-2523 RR25803 FL10667
MIT418 ESR-2615 ESR-2523 RR25803 FL10667
MIT420 ESR-2615 ESR-2523 RR25803 FL10667
MIT49.5 ESR-2615 ESR-2523 RR25803 FL10667
MIT5.12/16 ESR-2615 ESR-2523 RR25803 FL10667
MIT9.5 ESR-2615 ESR-2523 RR25803 FL10667

ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction

Drawings

Part Orthographic Perspective
HIT318None None
HIT320None None
HIT322
HIT322 Front View
DWG DXF
HIT322 Left View
DWG DXF
HIT322 Right View
DWG DXF
HIT322 Top View
DWG DXF
None
HIT324None None
HIT418None None
HIT420None None
HIT422
HIT422 Front View
DWG DXF
HIT422 Left View
DWG DXF
HIT422 Right View
DWG DXF
HIT422 Top View
DWG DXF
None
HIT424
HIT424 Front View
DWG DXF
HIT424 Left View
DWG DXF
HIT424 Right View
DWG DXF
HIT424 Top View
DWG DXF
None
ITS1.56/11.88
ITS1.56/11.88 Front View
DWG DXF
ITS1.56/11.88 Right View
DWG DXF
ITS1.56/11.88 Top View
DWG DXF
None
ITS1.81/11.88None None
ITS1.81/14None None
ITS1.81/16None None
ITS1.81/9.5None None
ITS2.06/11.88None None
ITS2.06/14None None
ITS2.06/16None None
ITS2.06/9.5None None
ITS2.37/11.88None None
ITS2.37/14None None
ITS2.37/16None None
ITS2.37/9.5None None
ITS2.56/11.88None None
ITS2.56/14None None
ITS2.56/16None None
ITS2.56/9.5None None
ITS3.56/11.88None None
ITS3.56/14None None
ITS3.56/16None None
ITS3.56/9.5None None
MIT1.81/14
MIT1.81-14 Bottom View
DWG DXF
MIT1.81/14 Front View
DWG DXF
MIT1.81-14 Front View
DWG DXF
MIT1.81/14 Left View
DWG DXF
MIT1.81-14 Left View
DWG DXF
MIT1.81/14 Right View
DWG DXF
MIT1.81-14 Right View
DWG DXF
MIT1.81/14 Top View
DWG DXF
MIT1.81-14 Top View
DWG DXF
MIT1.81/14 Installed Perspective View
DWG DXF
MIT1.81-14 Perspective View
DWG DXF
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT1.81/16None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT11.88None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT311.88None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT311.88-2None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT314None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT314-2None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT316None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT318None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT320None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT3511.88None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT3511.88-2None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT3514None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT3514-2None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT3516None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT3518None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT3520None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT359.5-2None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT39.5-2None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT4.12/11.88None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT4.12/9.5None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT4.28/11.88None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT4.28/14None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT4.28/9.5None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT4.75/16None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT411.88None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT414None
MIT414 Installed Perspective View
DWG DXF
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT416None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT418None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT420None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT49.5None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT5.12/16None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF
MIT9.5None
MITin_DoubleLVL Installed Perspective View - ISO
DWG DXF