Description
Heavy-Duty Structural Anchoring: IM4S / P1.4-20 / H8.5
The IM4S (4-Crown) Keep-Nut™ is engineered for maximum pull-out strength in demanding structural applications. Featuring four elastic load-bearing crowns and an 8.5mm embedment depth, this heavy-duty insert delivers nearly 800 lbs of pull-out resistance per anchor.
Requiring a minimum surface thickness of 11.0mm, it is the premier choice for natural granite, heavy architectural cladding, heavy-duty commercial furniture, and thick solid surface installations. Simply drill a 12mm diameter hole to a depth of 9.0mm, press the insert in, and it is instantly ready to bear a load—no epoxy required.
Technical Specifications for IM4S/P1.4-20/H8.5
| SKU | Thread | Min. Thickness | H1 Thread Depth | D2 Hole Dia (±0.2) | L2 Hole Depth | Avg. Pull-Out Force |
|---|---|---|---|---|---|---|
| IM4S/P1.4-20/H8.5 | 1/4-20 | 11.0 mm (.43″) | 7.5 mm (.30″) | 12 mm | 9.0 mm (.36″) | 786 lbf (3.5 kN) |
Need a different embedment depth?
If your panel is less than 11mm thick, the 4-crown insert will protrude or cause surface cracking. If you need even deeper structural anchoring, explore our other 1/4-20 sizes:
➜ Shop 1-Crown (5.5mm Depth)
➜ Shop 2-Crown (6.5mm Depth)
➜ Shop 2×2 Crown (11.5mm Depth)
➜ Shop Structural 4-Crown (15.5mm Depth)
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