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PrimeSource 3-1/2 in. Square Metal Cap Nails, 50 lb. Carton
Regular price $141.95Orders start at $399 — combine any items to reach the minimum. Learn more
PrimeSource 3-1/2 in. Square Metal Cap Nails, 50 lb. Carton
PrimeSource 3-1/2 in. square metal cap nails secure roofing underlayment, felt and insulation with a wide square metal cap. Each carton weighs 50 lb and is sold by the carton. A mid-size cap option for underlayment attachment on roofing and building-envelope jobs.
Key Features:
- 3-1/2 in. cap size: The 3-1/2 in. square metal cap provides a broad bearing surface for underlayment attachment.
- Bulk 50 lb carton: Sold as a 50 lb carton for high-volume roofing installation.
- Pull-through resistance: The wide cap helps prevent felt and underlayment from tearing or pulling through.
- Metal cap construction: Metal caps hold up to jobsite handling and foot traffic during installation.
- Faster installs: Cap nails speed underlayment installation compared with standard roofing nails.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | PrimeSource |
| Sell unit | 1 carton, 50 lb |
| Product line | Square metal cap nails |
| Nominal size | 3-1/2 in. cap |
| Dimensions | 3-1/2 in. square cap |
| Weight | 50 lb per carton |
| Sell unit description | Carton |
| Intended use | Roofing underlayment, felt and insulation attachment |
Fit and Compatibility:
For underlayment, felt and foam-board attachment where a 3-1/2 in. cap is required. Nails only; no tools or accessories included.
Frequently Asked Questions (FAQ):
Q: What comes in one order?
A: One 50 lb carton of PrimeSource 3-1/2 in. square metal cap nails.
Q: What size are the caps?
A: The caps are 3-1/2 in. square metal caps.
Q: What are these used for?
A: They attach roofing underlayment, felt and similar materials where a wide cap prevents pull-through.
Q: How much does the carton weigh?
A: The listed item weight is 50 lb per carton.
Q: How many nails per carton?
A: The nail count is not stated in the sources; check packaging for the count.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
The 3-1/2 in. cap is a common choice for underlayment and felt attachment where specifications call for wide caps. Follow the fastener spacing required by the membrane manufacturer and local wind requirements, and keep cartons dry on site. Choose a larger 5 in. cap if your specification calls for more bearing area.
Cap nails have sharp points and edges; wear gloves and eye protection, and use proper lifting technique for the 50 lb carton.
Order the PrimeSource 3-1/2 in. square metal cap nails 50 lb carton today.
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