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Simplex Mega Cap Nails 1-1/4 in. Mill Capped Roofing Nails
Regular price $130.00Orders start at $399 — combine any items to reach the minimum. Learn more
Simplex Mega Cap Nails 1-1/4 in. Mill Capped Roofing Nails
Simplex Mega Cap Nails are 1-1/4 in. capped roofing nails with a large 1-5/8 in. head that doubles rupture value, letting you use fewer nails for the same rupture performance. The mill-finish nails feature ring shanks for extra pull-out resistance. Sold by the box and installed with a stand-up tool or hand hammer.
Key Features:
- Doubled rupture value: The original capped roofing nail design uses a large 1-5/8 in. head to double the rupture value.
- Fewer penetrations: Fewer mega cap nails achieve the same rupture performance as standard cap nails, resulting in fewer holes in the base sheet membrane.
- Ring shank grip: Ring shanks provide additional pull-out resistance.
- Fast installation: Installs easily with a stand-up tool or by hand hammer.
- Mill finish: Supplied in a mill finish.
- Bulk nail format: Packaged for bulk fastener use in residential roofing applications.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Simplex |
| Sell unit | 1 box |
| Product line | Simplex Mega Cap Nails |
| Nominal size | 1-1/4 in. |
| Head size | 1-5/8 in. cap head |
| Shank type | Ring shank |
| Material | Metal |
| Color / finish | Mill |
| Available sizes | 1-1/4 in. |
| Pack quantity | 1 box |
| Intended use | Residential roofing fastener for base sheet membrane attachment |
| Installation | Stand-up cap tool or hand hammer |
Fit and Compatibility:
Designed for capped fastening of base sheet membranes in residential roofing and works with standard stand-up cap nail tools or hand nailing. Use as part of a complete underlayment or membrane attachment system with compatible cap nail tools.
Frequently Asked Questions (FAQ):
Q: What is included in a box?
A: One box of Simplex Mega Cap Nails, 1-1/4 in. length, in mill finish.
Q: How do these compare to standard cap nails?
A: The large 1-5/8 in. head doubles the rupture value, so fewer nails deliver the same rupture performance and leave fewer holes in the base sheet membrane.
Q: Can I install these by hand?
A: Yes, they can be hand hammered or installed with a stand-up cap nail tool.
Q: Why ring shanks?
A: Ring shanks add pull-out resistance so the fastener holds more securely in the deck.
Q: What projects are these for?
A: They are bulk nails for residential roofing, primarily fastening cap sheet or base sheet membrane.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
For tear-off-resistant underlayment attachment, a large-head cap nail like this is a smart choice: the 1-5/8 in. head spreads load and doubles rupture value, so you can reduce fastener density. Pair with a stand-up cap tool for speed on large roofs. Keep spacing per the membrane manufacturer's wind requirements.
Nail points and cut ends are sharp; wear gloves and eye protection when hand nailing or loading the tool.
Order Simplex Mega Cap Nails 1-1/4 in. for high-holding, low-penetration membrane attachment.
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