The Bostitch STCR50191/2-4M PowerCrown staples are heavy-duty staples engineered for use in industrial-grade tackers and staplers — perfect for packaging, housewrap, insulation, sheathing, and other material-to-surface fastening tasks. With a 1/2" leg length and a 7/16" crown width, these staples are capable of deep penetration and secure hold, making them suitable for thicker materials such as heavy cardboard, tar paper, house wrap, vapor barriers, and other medium-to-heavy stapling jobs.
Manufactured with a robust .050" × .019" gauge galvanized wire, these staples resist bending, corrosion, and jamming — even under repeated use. The PowerCrown design improves drivability and helps reduce misfires and buckling during staple drive, ensuring consistent performance when fastening heavier or layered materials. The box contains 4,000 staples, giving ample supply for medium- to high-volume stapling work.
Key Features
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Leg Length: 1/2″ — provides adequate depth for thicker or layered materials
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Crown Width: 7/16″ — broad crown for stable clinch and firmness across material surfaces
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Wire Gauge / Material: Heavy-gauge galvanized steel (.050" × .019") — for strength, durability, and corrosion resistance
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Staple Technology: PowerCrown design — reduces buckling, ensures clean driving, and improves staple penetration
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Pack Quantity: 4,000 staples per box — suitable for continuous use in commercial or construction settings
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Fits Bostitch Tools: PC1000, PC2000, PC4000, PC4000-OC1, PC5000, H30-8, P6C-8, USO56-1
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Suitable For: Stapling house-wrap, insulation, sheathing paper, tar paper, packaging, cardboard, and general-purpose fastening on heavier or layered materials
Best Use Cases
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Attaching house-wrap, sheathing paper, or vapor barrier
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Insulation installation or underlayment fastening
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Securing tar paper, roofing felt, or protective sheeting
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Packaging, crate sealing, pallet box assembly, or heavy cardboard fastening
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General construction or home-improvement tasks requiring strong staples
Why Choose STCR50191/2-4M Staples?
These staples strike a good balance of durability, holding power, and reliable driving performance. Their heavy-gauge galvanized steel and PowerCrown design allow them to penetrate dense or layered materials and achieve secure clinch — ideal for construction, packaging, or contractor applications. With a 4,000-staple supply, they’re a cost-effective solution for frequent or bulk stapling needs.
