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5/16 X 5-Inch Washer Head Structural Screws 500-Piece
- Mfg.#
- GRSSFW5165500
- Sku#
- 2990661
- Type 17-point course thread for easy, quicker penetration into wood – no pre-drilling
- Faster than lag screws in exterior structural wood applications
- Approved for use in treated lumber in exterior wood structural application
- Dual Drive Power Head offers flexibility to choose either the included hex driver or (T-20) star drive bit
- Protected by Grip-Rite PrimeGuard Plus Lifetime Coating for improved corrosion resistance
* Estimated stock levels as of Tue, Mar 31, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
Grip-Rite® Structural Screws offer versatility, speed, and longevity in load-bearing exterior wood construction projects. Available in both traditional flat head and hex head styles, the hex head features Grip-Rite’s exclusive Dual Drive Power, which brings flexibility to the job site with a unique combined Hex Washer/Star Drive recess head, offering the user a choice of using the included hex driver or a star drive bit to fasten the screw. Both styles include an ID code stamped right into the head for easy spec reference and a load value chart conveniently located on every package. As a replacement for lag screws, Grip-Rite Structural Screws feature a type 17 point that translates to both efficiency and time savings by eliminating the need to pre-drill pilot holes. Our premium PrimeGuard Plus coating assures that Grip-Rite Structural Screws will last throughout a project’s lifetime. Easily identifiable, cobalt blue packaging features easy-to-read iconography, lateral load value references, and a scannable QR code that links directly to the ICC report for technical specifications.
Specifications
General
| Application | Applications: Decking, Gazebos, Playground structures, Pergolas, and Trusses |
|---|---|
| Coating | PrimeGuard Plus |
| Color | Black |
| Drive Style | Star T-20 |
| Head Type | Washer |
| Pack Qty | 500 |
| Point Type | Type 17 |
| Thread Type | Coarse |
| Type | Structural Screw |
Dimensions
| Diameter | 5/16 in |
|---|---|
| Length | 5 in |
