Key Features
Stops Pull-ThroughThe cap-and-staple setup spreads holding force over a wider area, which helps prevent pull-through when fastening felt, house wrap, and foam board. Coated For Better DriveThe coated finish helps the staples penetrate more smoothly and improves holding power, which matters when you are fastening sheet goods and wrap in volume. Bostitch Cap Stapler RefillThis Bostitch CAPPAK-5M cap and staple pack gives you 5,000 caps and 5,000 staples, so you can load up for long runs without piecing supplies together.
Overview
The Bostitch CAPPAK-5M 5,000 Qty 1 in. Caps and 1 in. 18 Gauge 5/16 in. Crown Staples is a bulk fastener pack built for cap stapling applications. This is a staple and cap refill pack designed for fastening felt, house wrap, and foam board without the pull-through problems you get from standard narrow fastening. Model Number: CAPPAK-5M.
What matters here is the combination of the 1 inch plastic caps and the 1 inch long 18 gauge staples. That setup spreads the load over a wider surface area, so wraps and underlayments stay put instead of tearing around the fastener. If you are installing building paper or foam insulation, that wider hold is the whole point.
The coated finish is not just a line on the box. It helps the staples drive more easily and adds holding power once they are set. On repetitive fastening work, smoother penetration means fewer hang-ups and more consistent results, especially when you are moving quickly across larger wall or roof sections.
This bulk pack includes 5,000 caps and 5,000 staples, which makes it a practical choice for high-volume work instead of small repair jobs. It is built for users already running a compatible Bostitch cap stapler and who want matched consumables ready to go. You are not mixing parts or guessing fit.
Compatibility is straightforward. This pack is made for the Bostitch SB150SLBC cap stapler platform, with web data also referencing SB150SLBC-1. That makes it a targeted refill, not a general-purpose staple assortment. If you use that stapler for weather barrier, felt, or foam board installation, this is the correct style of fastener pack to keep on hand.
Who should buy it? Contractors and serious remodelers doing roofing prep, exterior envelope work, or insulation installs. If your job calls for fastening materials that can tear or pull through with ordinary staples, the Bostitch CAPPAK-5M is the right consumable because it is built specifically for that problem.
Built for Fast, Secure Wrap Installation
This pack is all about faster installation on materials that do not hold up well with a standard staple alone. The cap helps hold sheet material down cleanly while the staple provides the bite into the work surface.
- Includes 5,000 caps and 5,000 staples for bulk jobsite use
- Designed to help eliminate pull-through on felt, house wrap, and foam board
What’s in the Box
- (5,000) 1 in. caps
- (5,000) 1 in. long 18 gauge staples
Key Specifications
| Material | Stainless Steel |
|---|---|
| Staple Length | 1 in. |
| Gauge | 18 Gauge |
| Crown Size | 5/16 in. |
| Cap Diameter | 1 in. |
| Staple Type | Roofing |
| Package Quantity | 5,000 caps and 5,000 staples |
| Weight | 11.8 lbs |
Compatibility
Tool Compatibility Fits Bostitch SB150SLBC cap staplers. Supplementary web data also references SB150SLBC-1.
Built For
RoofingHouse Wrap InstallationFelt InstallationFoam Board InstallationExterior Envelope WorkGeneral Contracting
Pro Tip
If you are stocking for a weather barrier or insulation job, buy caps and staples as matched packs like the Bostitch CAPPAK-5M instead of loose components. It keeps feed compatibility simple and avoids downtime from mixing the wrong consumables in a cap stapler.
Warranty & Support
No manufacturer’s warranty.
Tool Nut’s Take
Tool Nut’s Take
Bostitch CAPPAK-5M Keeps Cap Stapling Simple
If you already run a Bostitch cap stapler for wrap or felt, this is the bulk refill pack that makes the job go faster and hold better.
- Who it’s for: Pros and serious DIY users installing house wrap, roofing felt, or foam board with a compatible Bostitch cap stapler.
- Why it stands out: You get the wider holding surface of 1 inch caps, 18 gauge 5/16 inch crown staples, and a coated finish that helps with drive performance and holding power.
- Worth knowing: This is a dedicated consumable pack, not a universal staple box. Make sure your tool is the SB150SLBC platform before you order.
Common Questions
- What tool does this pack fit? It fits the Bostitch SB150SLBC cap stapler, with supplementary data also referencing SB150SLBC-1.
- What is this fastener pack used for? It is used for fastening felt, house wrap, and foam board where a cap helps prevent pull-through.
- How many fasteners are included? The pack includes 5,000 caps and 5,000 staples.
- What size staples are included? The staples are 1 inch long, 18 gauge, with a 5/16 inch crown.
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