GRK 00101 R4 Multi-Purpose Framing Screw, #9 x 2-1/2", 2900-Count HALLOWEEN Red metal primer

Red metal primer

pumice and honeycomb stone as well as autoclave aerated concrete

This model is mercury free and compatible with gas or oil furnaces

Weld free design

GRK 00101 R4 Multi-Purpose Framing Screw, #9 x 2-1/2", 2900-Count HALLOWEEN Red metal primerThis design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision leaving no damaged fibers around the head. R4 screws 2" and longer have a four threaded CEE Thread. This enlarges the screw hole for the non threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the