Dril-Flex® Structural Drill Screws, Undercut Flat Phillips Head

DeWALT® Dril-Flex Structural Drill Screws are dual heat-treated self-drilling tapping screws that provide the strength, ductility, and resistance to embrittlement required for critical applications.

Dril-Flex Structural Phillips Undercut Self-Drilling Screw

SKU	Product Type	Diameter	Length	Head Type	Drive Type	Point Size	Material	Finish	Pieces Per Unit	Price
DEW DFSEBL340-100	Self-Drilling Structural Screw	1/4"	4"	Flat Undercut	Phillips	#4	Alloy Steel	Stalgard®	100/Box	$79.95
DEW DFSEBL223-100	Self-Drilling Structural Screw	#12	1-1/2"	Flat Undercut	Phillips	#3	Alloy Steel	Stalgard®	100/Box	$24.15
DEW DFSEBL223	Self-Drilling Structural Screw	#12	1-1/2"	Flat Undercut	Phillips	#3	Alloy Steel	Stalgard®	2500/Box	$655.00
DEW DFSEBL215	Self-Drilling Structural Screw	#12	1"	Flat Undercut	Phillips	#3	Alloy Steel	Stalgard®	4000/Box	$952.00
DEW DFSEBL215-100	Self-Drilling Structural Screw	#12	1"	Flat Undercut	Phillips	#3	Alloy Steel	Stalgard®	100/Box	$23.80
DEW DFSEBL220-100	Self-Drilling Structural Screw	#12	1-1/4"	Flat Undercut	Phillips	#3	Alloy Steel	Stalgard®	100/Box	$29.25
DEW DFSEBL330-100	Self-Drilling Structural Screw	1/4"	3"	Flat Undercut	Phillips	#4	Alloy Steel	Stalgard®	100/Box	$60.00

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Dual heat-treated drill screws provide the strength, ductility, and resistance to embrittlement required for critical applications.

Stalgard SUB coating (Hex washer product only) provides 2000 hours of salt spray resistance (per ASTM B117)
High-hardness points and lead threads for drilling and tapping with lower-hardness in load-bearing threads for ductility
Virtually immune to delayed embrittlement failures

Dril-Flex Structural Self-Drilling Screw Applications:

Steel-to-steel connections
Aluminum-to-steel connections
Aluminum-to-aluminum connections
Wood-to-steel connections

Dril-Flex Approvals:

International Code Council, Evaluation Service (ICC-ES), ESR-3332
International Code Council, Evaluation Service (ICC-ES), ESR-4367
International Code Council, Evaluation Service (ICC-ES), ESR-4374
Code compliant with the International Building
Code/International Residential Code: 2021 IBC/IRC, 2018 IBC/IRC, 2015 IBC/IRC, and 2012 IBC/IRC
Los Angeles Building Code (LABC) and Los Angeles Residential Code (LARC) ICC-ES Report Supplement
Florida Building Code (FBC) ICC-ES Report Supplement
Tested in accordance with ICC-ES AC118 for use in Steel-to-Steel Connections
Tested in accordance with ICC-ES AC500 for attaching Miscellaneous Building Materials to Steel
Tested in accordance with ICC-ES AC491 for use in Aluminum

Diameters: #10 to 3/8"
Lengths: 3/4" to 4"
Head/Drive Styles: Hex Washer and Phillips Pan, Wafer and Undercut Flat
Point Types: #3, #4 and #5
Material: Alloy Steel
Heat Treat: Grade 5
Finishes: Silver Stalgard® or Stalgard SUB Coating

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