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The Arrow JT21-38 staples are heavy-wire staples built for medium- to heavy-duty stapling tasks. With a 3/8" leg length and a 1/2" crown, these staples offer deeper penetration and stronger holding power — ideal for stapling thicker cardboard, corrugated boxes, crates, insulation backing, sheathing, light wood paneling, or other dense materials.
Made from sturdy steel wire, JT21-38 staples are designed to resist bending or misfires, providing consistent, reliable clinch even under repeated use. Their robust construction makes them suitable for workshop, warehouse, mailroom, or contractor jobs where durability and secure fastening are required. A 5,000-staple pack ensures sufficient supply for regular or bulk stapling work.
Key Features
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Leg Length: 3/8" — deeper drive for thicker materials and more secure hold
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Crown Width: 7/16" — wide crown ensures stable clinch across box seams, panels, or sheathing
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Material: Heavy-wire steel — strong, durable construction for reliability under load
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Pack Quantity: 5,000 staples (sold only in 5 pack boxes with 1,000 staples per pack) — ample supply for frequent use or large projects
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Best Uses: Corrugated cartons, crates, insulation backing, light-wood paneling, sheathing, packaging, and general stapling tasks needing strong staples
Ideal Applications
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Sealing corrugated cartons and packaging boxes
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Crate assembly, pallet-box sealing, and carton closing
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Insulation sheeting, house-wrap, or panel installation
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Workshop or garage use for light carpentry, sheathing, or light wood panel fastening
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Mailroom or warehouse packaging and shipment preparation requiring robust staples
Why Choose Arrow JT21-38 Staples?
When standard staples don’t have the length or strength needed, JT21-38 staples offer the deeper drive and secure clinch necessary for tougher materials. Their heavy-wire build and wide crown provide reliable fastening for heavier-duty tasks — making them a solid choice for packaging, shipping, construction prep, or any application requiring strong staples with good holding power.
