https://mccoys-website.useast01.umbraco.io/shop/p/5149703-052303-12/grk-fasteners-rss-14221-structural-screw-516-in-thread-3-18-in-l-w-cut-thread-washer-head-star-drive-steel
RSS 14221 Structural Screw, 5/16 in Thread, 3-1/8 in L, W-Cut Thread, Washer Head, Star Drive, Steel
Sku: 5149703-052303-12
$23.45
50 Available at
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Estimated Arrival On: 04/18/2026
GRK's RSS™ rugged structural screw is a structural fastener designed for ease of installation and the strongest of connections. RSS fasteners drive into most woods without the need for pre-drilling. The specially engineered design results in a low-effort installation, especially compared to conventional lag screws.
- Fast bite tip provides a fast start
- Zip-Tip™ no pre-drilling, faster penetration
- W-Cut™ low-torque, smoother drive
- Reduce wear and tear on the battery while you work with Batteryguard™, a shock-absorbing battery to tool connection
- S3 technology double hardens the blade edge for increased cutting life
- Climatek™ coating is AC257 code approved for use in treated lumber
Thread Size
5/16
Length
3-1/8
Thread Type
W-Cut
Head Type
Washer
Drive Type
Star
Point Type
Zip-Tip
Material
Steel
Finish
Climatek-Coated
Package Quantity
25
Type
Rugged
Thread Length
2.087
Drive Size
T30
Color
Yellow
Applicable Materials
Treated Lumber, Wood
Shear Strength
2948
Tensile Strength
4247
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