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Strong-Drive® XM MEDIUM-HEAD METAL Screw 

Strong-Drive® XM MEDIUM-HEAD METAL Screw

Strong-Drive metal screws are load tested and code listed, allowing you to get the maximum load values for installation. Comparison testing shows Strong-Drive XM Medium-Head Metal screws are stronger than many alternative fastener types in 33 ksi and 50 ksi steel decking.

Key Features

  • 5/16" hex drive (replacement driver bit — BITHEXR516-134)
  • 1/2"-dia. hex washer head is ideal for narrow-channel steel decking
  • Available only in 1 1/4" length with #5 drill point
  • Available in Quik Guard® coating

Applications

  • Steel decking to structural members involving wide or narrow valley; nestable or interlocking steel decking

Warning

  • Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, use this product in dry, interior and noncorrosive environments only.

Codes

The Steel Deck Institute updated the 4th Edition of the Diaphragm Design Manual (SDI-DDM04) to include Simpson Strong-Tie as an approved manufacturer of screws used for steel decking.

Related Links

Catalog Pages

Related Literature

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Coating/Material Screw Size Length (in.) Head Diameter (in.) Drive Type Head Type Thread Type TPI Point Type Point Size Packaging Qty. UPC
XMQ114B1224-2K Quik Guard® Coating #12 1 1/4 0.500 5/16 in. Hex Hex Washer Head Machine Threads 24 Drill Point 5 2000 707392216643

Product Information Table

Model No. Length (in.) Screw Size Drive Type Head Diameter (in.) Head Type Thread Type TPI Point Size Point Type Coating/Material Packaging Quantity UPC
XMQ114B1224-2K 1 1/4 #12 5/16 in. Hex 0.5 Hex Washer Head Machine Threads 24 5 Drill Point Quik Guard® Coating 2000 707392216643

Load Tables

Screw Shear and Tension Strengths

  1. Pss and Pts are nominal shear strength and nominal tension strength for the screw itself, respectively, and are the average (ultimate) value of all tests determined by independent laboratory testing.
  2. The ASD and LRFD loads for tension are calculated using a safety factor Ω of 3.0 and the resistance factor Φ of 0.5, respectively.
  3. For tension connection: the smallest of the screw tension strength, pull-over strength and pull-out strength shall be used for design.

Structural Screw Pull-Over Strength with Steel Minimum Yield Strength Fy = 33 ksi

  1. Values are based on steel members with a minimum yield strength of Fy = 33 ksi and tensile strength of Fu = 45 ksi.
  2. The values for 16 ga., 18 ga., 20 ga. and 22 ga. are based on tests per AISI Standard Test Method S905-08.
  3. The safety factor Ω and resistance factor Φ used to determine the ASD and LRFD strengths are based on AISI S100, Chapter F.
  4. The values for 16 ga., 18 ga., 20 ga. and 22 ga. are based on the calculations per AISI S100-07, Section E4.
  5. For tension connection: the smallest of the screw tension strength, pull-over strength and pull-out strength shall be used for design.

Structural Screw Pull-Out Strength

  1. Values are based on calculations per Section E4 of AISI S100-07.
  2. The tabulated ASD and LRFD loads are based upon a safety factor Ω of 3.0 and the resistance factor Φ of 0.5.
  3. For tension connection: the smallest of the screw tension strength, pull-over strength and pull-out strength shall be used for design.