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Manufacturer Varies by Location Square Metal Cap Nails, Mill Finish, 1-1/4 in., 50 lb Carton
Regular price $139.00Orders start at $399 — combine any items to reach the minimum. Learn more
Manufacturer Varies by Location Square Metal Cap Nails, Mill Finish, 1-1/4 in., 50 lb Carton
These 1-1/4 in. square metal cap nails come in a 50 lb carton with a mill finish, for fastening underlayment, insulation board and house wrap where a wide holding head is needed. One order is a single carton (EA). Load them in cap nailers or drive by hand to anchor synthetic underlayment and foam board quickly.
Key Features:
- Wide cap head: The square metal cap provides a large bearing surface that grips underlayment and insulation board without pulling through.
- 1-1/4 in. size: The 1-1/4 in. length suits thin underlayments and sheathing attachments.
- 50 lb carton: Supplied in a 50 lb carton for high-volume jobs.
- Mill finish: Supplied in mill finish as produced.
- Fast installation: Works in cap nailers for rapid underlayment installation.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Manufacturer Varies by Location |
| Sell unit | 1 carton, 50 lb |
| Product line | Square Metal Cap Nails |
| Material | Metal with square cap |
| Color / finish | Mill |
| Nominal size | 1-1/4 in. |
| Pack quantity | 50 lb carton |
| Intended use | Fastening underlayment, insulation board and similar materials requiring wide-head fastening |
| Product weight, complete sell unit | 50 lb |
Coverage & How Much You Need:
A 50 lb carton contains roughly 2,600-3,400 cap nails depending on nail and cap weight; at typical underlayment fastening of one nail per 12-18 in. of lap edge, that covers several squares. Count your roll lapping schedule to size the order.
Fit and Compatibility:
Use with cap nailers or hand drive over roof sheathing and wall sheathing; check your nailer's magazine accepts 1-1/4 in. square cap nails. Not intended for finish nailing where head visibility matters.
Frequently Asked Questions (FAQ):
Q: What comes in one order?
A: One 50 lb carton of 1-1/4 in. square metal cap nails in mill finish.
Q: What are cap nails used for?
A: The wide square cap holds underlayment, house wrap and foam board firmly without tearing or pulling through the material.
Q: Can I use a nailer?
A: Yes, they are intended for cap nailers as well as hand driving; confirm your tool accepts 1-1/4 in. square cap nails.
Q: How many nails are in a 50 lb carton?
A: An exact count is not stated in the sources; a 50 lb carton of cap nails generally contains a few thousand nails.
Q: Are these corrosion-resistant?
A: The sources state only a mill finish and do not specify corrosion treatment, so choose stainless or coated fasteners where corrosion resistance is required.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Square cap nails are the fastest way to secure synthetic underlayment on steep-slope roofs, especially on windy days when one wide-head nail replaces several standard fasteners. Buy the 50 lb carton when running full rolls of underlayment; at roughly one nail per 12-18 in. of lap and field, a carton covers a large crew-day. Match fastener corrosion class to the covering's warranty requirements.
Wear eye protection when driving cap nails, and follow the cap nailer manufacturer's safety instructions.
Pick up the 1-1/4 in. square metal cap nails in a 50 lb carton for fast underlayment anchoring.
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