A: Hello, I'm Andrew from GRK. The GRK R4 multi-purpose screws can be used with fiber cement boards.
A: Hi, this is Andrew from GRK. We recommend contacting a local, licensed engineer to determine the appropriate product for your application.
A: Hi, I'm Andrew from GRK. We would not recommend the use of washers with the R4 fasteners. Although, we do offer fasteners that are designed with a washer styled head that might be suitable for your application. Please refer to the GRK RSS product line for further details.
A: Hello, I'm Andrew from GRK. Yes, you can use the GRK R4 Multi-Purpose screws in pressure treated lumber.
|Brand||GRK Fasteners||GRK Fasteners||Grip-Rite||GRK Fasteners|
|Name||#9 x 3-1/8 in. Star Drive Bugle Head Multi-Purpose Framing Screw Extended Contractor Pack (720-Piece)||#9 x 2-1/2 in. Star Drive Bugle Head Multi-Purpose Framing Screw Extended Contractor Pack (900 per Pack)||#8 x 2-1/2 in. Philips Bugle-Head Coarse Thread Sharp Point Polymer Coated Exterior Screws (25 lbs./Pack)||#8 x 2-1/2 in. Star Drive Low Profile Washer-Head Cabinet Screws (1,500-Pack)|
|Screw Length||3-1/8 in||2-1/2 in||2-1/2 in||2-1/2 in|
|Head Style||Bugle Head||Bugle Head||Bugle Head||Low Profile Washer|
|Interior/Exterior||Exterior, Interior||Exterior, Interior||Exterior||Exterior, Interior|
|THD SO SKU||1001281524|
|View Product||View Product||View Product||View Product|