Roofing Fasteners & Accessories Self-drilling screw - No washer - 2-1/2"
1/4" Impax™ SD3 Metal Self-Drill Screw, HWH (3/8") | SD3-14
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1/4-14 Metal Impax SD3 (3/8") to Metal Fastener
SX14 #12 Metal Self-Drill Screw Bi-Met, HWH or irius®, 304 or 316 Stainless
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Fastening of profile sheets, sandwich panels (hidden fixing) and standing seam clips onto metal beams