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#10 x 3-1/8-Inch PHEINOX™ R4™ 305 Stainless Steel Multi-Purpose Self-Countersinking Screw, 305-Pro-Pack
- Mfg.#
- GRK 26137
- Sku#
- 9816240
- No pre-drilling unless material requires
- Corrosion resistance for harsh environments
- Stain-resistant in specialty wood
- Self countersinking
* Estimated stock levels as of Fri, Jun 12, 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
GRK’s R4™ Multi-Purpose 305 stainless steel screws are designed for applications that require superior corrosion resistance in exterior environments with high moisture content such as docks, boardwalks, and piers on lakes. Recommended for use with cedar, redwood and other naturally protected wood species that have a higher acid content. R4 305 stainless steel screws are recommended for applications located more than 1 mile from the coast.
Specifications
General
| Applicable Materials | Cedar, Redwood and other naturally protected wood species that have a higher acid content |
|---|---|
| Application | For applications that require superior corrosion resistance in wet environments such as decks, boardwalks, pools and hot tubs (Recommended for applications more than one mile from the coast) |
| Coating | Stainless |
| Color | Silver |
| Drive | Torx |
| Drive Size | T-25 |
| Drive Style | Recessed Star |
| Drive Type | T-25 Star |
| Driver Bit Size | T-25 |
| Finish | Stainless Steel |
| Grade | 305 |
| Head Diameter | 0.368 in |
| Head Style | Flat |
| Head Type | Bugle |
| Includes | Driver Bit |
| Indoor/Outdoor | Indoor/Outdoor |
| Material | Stainless Steel |
| Minor Diameter | 0.171 in |
| Pack Qty | 305 |
| Point Type | Zip-Tip™ |
| Series | R4™ |
| Shear Strength | 424 lb |
| Tensile Strength | 490 lb |
| Thread Length | 2.125 in |
| Thread Size | #10 |
| Thread Type | W-Cut |
| Type | Multi-Purpose |
Dimensions
| Diameter | #10 |
|---|---|
| Length | 3.125 in |
| Shank Diameter | 0.142 in |
| Size | #10 X 3.125-Inch |
Manufacturing Details
The following information is subject to change without notice
| Country of Origin | China |
|---|---|
| Prop 65 Warning |
This product can expose you to a chemical (or chemicals) that are known to the State of California to cause cancer or reproductive harm. For more information go to www.P65Warnings.ca.gov
|
Label Information
| Certification, Codes, Standards | AC257 Treated Lumber Approved 305 STAINLESS STEEL Corrosion Resistance for Harsh Environments 316 STAINLESS STEEL Marine Grade Protection for Superior Corrosion Resistance PHEINOX™ 305 PHEINOX™ 316 For use is cedar, redwood and specialty hardwood Corrosion resistance for harsh environments Corrosion resistance for wet environments Stain resistant in specialty wood For use within 1 mile of the coast Stain resistant in specialty wood Marine-Grade protection for Superior corrosion resistance Superior Corrosion resistance for coastal environments |
|---|
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Related Documents
Brochure (PDF)
Msds (PDF)
