Canadian Owned & Operated Since 1964
Simpson Strong-Tie MIT11.88 Medium I-Joist Top-Flange Hanger, 1-3/4 in. x 11-7/8 in.
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MIT11.88 Medium I-Joist Top-Flange Hanger, 1-3/4 in. x 11-7/8 in.
The MIT11.88 is a 16-gauge top-flange hanger for a 1-3/4 in. x 11-7/8 in. I-joist or LVL. The flange hooks over the header, so the hanger carries load in bearing as well as through its nails.
Sized for one member depth. Check the joist depth before ordering.
Features and Common Uses
- 16-gauge steel, Zinc galvanized, G90 finish
- Optional triangle holes for additional uplift
- Optional fastening with PAT pins for steel headers
- Tested, load rated and code listed by Simpson Strong-Tie
Commonly used for:
- I-joist floors and roofs hung from LVL, glulam or sawn headers
- Stair and floor openings
Specifications
| Brand | Simpson Strong-Tie |
|---|---|
| Model | MIT11.88 |
| Carried member | 1-3/4 in. x 11-7/8 in. |
| Gauge | 16 ga. |
| Width (W) | 1-13/16 in. |
| Height (H) | 11-7/8 in. |
| Seat depth (B) | 2-1/2 in. |
| Top flange (TF) | 2-5/16 in. |
| Header fasteners | (8) 0.162 in. x 3-1/2 in. (top and face) |
| Joist fasteners | (2) 0.148 in. x 1-1/2 in. |
| Finish | Zinc galvanized, G90 |
Dimensions, fastener schedule and allowable loads are from Simpson's catalogue table for the MIT11.88. Loads vary by lumber species, load duration and nailing option; confirm the value for your design before install. Source: Simpson Strong-Tie Wood Construction Connectors Catalog C-C-2026, pp. 183-185 (PDF).
How to Install
- Confirm the header can take every fastener in the table.
- Hook the top flange over the header and nail the top and face holes.
- Seat the joist and drive the joist nails; add triangle holes for uplift.
Full installation notes, fastener substitutions and load tables: Source: Simpson Strong-Tie Wood Construction Connectors Catalog C-C-2026, pp. 183-185 (PDF).
Frequently Asked Questions
Which nails do I need?
Header: (8) 0.162 in. x 3-1/2 in. (top and face). Joist: (2) 0.148 in. x 1-1/2 in. Use the exact sizes Simpson specifies; a shorter or thinner nail lowers the allowable load. Simpson's catalogue table lists the load for each nailing option.
Can I use it on a pressure-treated deck?
Not this finish. G90 galvanizing is for dry, interior framing. For preservative-treated lumber or exterior exposure, Simpson calls for ZMAX, hot-dip galvanized or stainless steel connectors and matching fasteners. Ask us about the ZMAX or stainless version.