Hillman Fasteners 461380 Underlayment Nail 1.25in 3D Bright

Product Description

The HILLMAN FASTENERS 461380 is a 3D bright underlayment nail designed for securing subflooring and underlayment panels during rough-in and finish flooring installations. At 1.25 inches in length, this smooth-shank bright nail is sized for driving through standard underlayment sheet goods into floor decking without over-penetrating. The box unit contains 12 pounds of nails, giving flooring contractors and carpenters a workable bulk quantity for larger jobs. Bright finish nails are intended for interior dry applications where corrosion resistance is not a primary requirement.

These underlayment nails are used in residential and light commercial flooring work, typically driven by hand or pneumatic nailer into plywood, OSB, or hardboard underlayment over wood subfloor systems. The 3D designation indicates the penny size, which corresponds to the 1.25-inch length standard for thin underlayment panels. Flooring installers, finish carpenters, and general contractors commonly stock this nail size when installing resilient flooring, tile backer, or laminate underlayment substrates.

Key Features

• 1.25-inch length suitable for underlayment-to-subfloor fastening without blow-through
• 3D penny size — standard sizing for thin sheet underlayment applications
• Bright finish for interior dry-condition installations
• Sold by the box at 12 pounds per unit for bulk job-site use
• Package quantity of 12 units per box for stocking and resale

Compatibility

Designed as a standard 3D bright underlayment nail for use with plywood, OSB, and hardboard underlayment panels in interior wood-frame floor assemblies.

Installation Notes

Underlayment nails are installed by flooring contractors and carpenters using a hammer or pneumatic finish nailer rated for the appropriate nail gauge and length. Fasten panels per the underlayment manufacturer's nailing schedule, typically starting from the center and working outward to prevent buckling. Ensure the subfloor is clean, flat, and dry before fastening underlayment. Bright nails are not rated for exterior or moisture-exposed applications.