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10221 SCREW STRUCTURAL 5/16X3-1/8IN 500ct

SKU GRK10221
Sold out
Original price $251.00 - Original price $251.00
Original price $251.00
$251.00
$251.00 - $251.00
Current price $251.00
In-Store Availability
Stock Status: Call for Availability Location: Aisle 14
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In-Store Only — Visit us in Gap, PA to purchase

Overview

The GRK Fasteners 10221 Structural Screw (GRK10217) is designed for structural decking, framing, ledger board, LVL, multi-ply, and interior/exterior remodeling applications. Sold in a 500-count box, this 5/16 in. x 3-1/8 in. structural screw delivers a code-compliant fastening solution for demanding wood construction assemblies.

Specification Value
MPN GRK10217
Brand GRK Fasteners / ITW Brands
Screw Size (Diameter) 5/16 in.
Fastener Length 3-1/8 in. (nominal); 2-1/2 in. (per manufacturer description)
Head Type Round
Head Height 0.177 in.
Drive Type Star (T30)
Material Steel
Finish Climatek™
Compatible Substrate Wood
System of Measurement Inch
Package Quantity 500 count
Package Weight 4.89 lb
Dimensional Standards / Certifications ESR-2442, ICC-ES AC257

Technical Features

  • Climatek™ Corrosion-Resistant Finish: Provides a proprietary protective coating on the steel shank, extending service life in exterior and exposed environments.
  • Unique Thread Design with W-Cut Technology: The W-Cut thread geometry reduces friction during installation, enabling faster penetration into wood substrates and lowering required drive torque.
  • T30 Star Drive: The T30 star drive recess maximizes bit engagement and reduces cam-out, supporting consistent installation under high-torque conditions.
  • Round Head Profile (0.177 in. Height): The low-profile round head seats securely against the work surface, providing a clean bearing surface suitable for structural connections.
  • ESR-2442 & ICC-ES AC257 Compliance: Listed under recognized engineering standards, supporting use in permitted structural applications where code-compliant fasteners are required.
  • 500-Count Packaging: Bulk quantity format reduces restocking interruptions on large-scale framing and decking projects.

Applications

  • Structural decking installations
  • Wood framing assemblies
  • Ledger board connections
  • LVL (Laminated Veneer Lumber) fastening
  • Multi-ply wood member construction
  • Interior and exterior remodeling projects requiring structural fasteners
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