HP-XTRA #21 Steel Roof Fasteners
Black epoxy electro-deposition
$201.50 /box
$0.40 per piece · 500 per box
Orders start at $399. Combine any items to reach it.
Sold by the box of 500, as the chosen option states. We round up and set the quantity for you.
- 1 box · 500 pieces
- $201.50
- Standard delivery
- $49.99 per order
- Sales tax
- Added at checkout
All orders are subject to approval.
You're not charged until your order is approved and ready to ship. Cancel free before then.
Standard delivery$49.99
Per order, added in your cart. We deliver to the 48 contiguous states.
Availability confirmed by the desk at approval, with your delivery date. Shipping policy · Returns
Goes with
Carlisle · Fasteners
Details & specifications.
From the maker · Carlisle’s description
Carlisle HP-XTRA Fasteners are #21 steel-threaded fasteners used with PIRANHA XTRA Fastening Plates to secure mechanically fastened Sure-Weld roofing systems to 22-gauge steel decks. Deep buttress threads at 13 per inch and a mini drill point deliver strong pullout and back-out resistance. Sold in boxes of 250 (7 in. to 12 in.) or 500 (2 in.).
Coverage & How Much You Need
Fastener count depends on deck pattern and specified fastener density; plan quantity from the roof assembly's fastening layout. Boxes contain 250 fasteners (7 in. through 12 in.) or 500 fasteners (2 in.).
Fit and Compatibility
Designed for use with Carlisle PIRANHA XTRA Fastening Plates to secure mechanically fastened Sure-Weld roofing systems to 22-gauge (0.76 mm) steel decks. Plates are sold separately.
- SKU
- CAR303263
- Finish
- Black epoxy electro-deposition
- Material
- Steel
- Brand
- Carlisle
- Size
- 2" #21 500/Box
- Sell unit
- 1 box (250 or 500 fasteners depending on length)
- Product line
- HP-XTRA Fasteners
- Available colors
- Mill
- Available sizes
- 2 in., 7 in., 9 in., 10 in., 12 in. (#21); 7-12 in. boxes of 250, 2 in. boxes of 500
- Thread
- #21 steel-threaded, 13 threads per inch buttress thread
- Point
- Mini drill point
- Head
- Oversized truss head, #3 Phillips drive
- Coating
- Black epoxy electro-deposition
- Pullout value
- Typical 900 lb in 22-gauge Grade E steel deck
- Deck compatibility
- 22-gauge (0.76 mm) steel decks
- System compatibility
- Used with PIRANHA XTRA Fastening Plates to secure mechanically fastened Sure-Weld roofing systems
- Included
- One #3 Phillips screwdriver bit per bucket
- Approvals
- Enhanced Factory Mutual uplift approvals; coating surpasses FM 4470 corrosion test (less than 15% red rust after 15 Kesternich cycles); contact Carlisle for FM approval specifics
- Full product name
- Carlisle HP-XTRA #21 Steel Roof Fasteners, Mill, 2 in. to 12 in., 250 or 500 per Box
Key features
- Buttress threads: Deep buttress threads at 13 threads per inch put a flatter, wider surface against the deck bottom, increasing pullout and back-out resistance.
- Mini drill point: Cuts a hole in the steel deck while maintaining contact between the deck and the fastener's minor diameter for increased back-out resistance.
Specifications are provided by the manufacturer. Brand names are trademarks of their owners.
Guide
Choosing the fastener
- 1
Outdoors and treated lumber
Use hot-dip galvanized, stainless or exterior-coated fasteners, and follow the board maker’s fastener recommendation.
- 2
Price per piece
The pack price divided by the pieces in the pack, both as listed.
- 3
Drive
Star (Torx), square, Phillips or hex, as the listing states. Match the bit you carry.
The line includes 2 in. (500 per box) and 7, 9, 10, and 12 in. (250 per box) #21 fasteners in mill finish.