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Note: Special Prices Available on Partial Cases of Elco Dril-Flex Structural Screws
Call us 1.972.417.8882/ toll free 1.877.424.7616 or e-mail us at support@hurripanel.com for more information.

Dril-Flex Structural Self-Drilling Screws (1-56 of 56)
Dril-Flex Structural Self-Drilling Fasteners Dril-Flex screws are engineered and processed to help prevent hydrogen-induced brittle failures. Each fastener undergoes the unique Flex Technology® dual-hardening process, ensuring the optimal combination of ductility and hardness required for maximum performance in the field. Stalgard® coating provides additional corrosion resistance.

Testing of this product, in accordance with ASTM standards, has proven that Dril-Flex screws provide the same resistance to hydrogen-assisted cracking (HAC) as a Grade 5 screw.

View Technical Guide (pdf)

View Flash Animation: Product Features and Installation
Dril-Flex is dual-hardened for strength and ductility
Made in the U.S.A.
#10 Diameter #12 Diameter 1/4" Diameter 5/16" Diameter


Dril-Flex Structural Self-Drilling Screws  |  #10 Diameter  |  10-16 HWH
Dril-Flex Structural Self-Drilling Screws: #10-16 x ¾, #3 Point, Box of 500
#10-16 x 3/4" structural self-drilling screw with hex washer head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .150" thick. Maximum load-bearing area: .500".
Product No.: HFAF430P
PRICE: $61.19
Dril-Flex Structural Self-Drilling Screws: #10-16 x ¾, #3 Point, Case of 6000
#10-16 x 3/4" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .150" thick. Maximum load-bearing area: .500".
Product No.: HFAF430
PRICE: $587.47
Dril-Flex Structural Self-Drilling Screws: #10-16 x 1-1/2, #3 Point, Box of 500
#10-16 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. #2 point can drill steel and aluminum applications up to .175" thick. Maximum load-bearing area: .150".
Product No.: HFAF460P
PRICE: $87.16
Dril-Flex Structural Self-Drilling Screws: #10-16 x 1-1/2, #3 Point, Case of 2,500
#10-16 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF460
PRICE: $348.66
Dril-Flex Structural Self-Drilling Screws: #10-16 x 2, #3 Point, Box of 500
#10-16 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .175" thick. Maximum load-bearing area: .250".
Product No.: HFAF470P
PRICE: $90.59
Dril-Flex Structural Self-Drilling Screws: #10-16 x 2, #3 Point, Case of 2000
#10-16 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .175" thick. Maximum load-bearing area: .250".
Product No.: HFAF470
PRICE: $289.91
Dril-Flex Structural Self-Drilling Screws: #10-16 x 2-1/2, #3 Point, Box of 500
#10-16 x 2-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .175" thick. Maximum load-bearing area: .250".
Product No.: HFAF480P
PRICE: $97.23
Dril-Flex Structural Self-Drilling Screws: #10-16 x 2-1/2, #3 Point, Case of 1,500
#10-16 x 2-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF480
PRICE: $233.35
Dril-Flex Structural Self-Drilling Screws  |  #10 Diameter  |  10-16 PPH
Dril-Flex Structural Self-Drilling Screws: #10-16 x ¾, #2 Point, Box of 500
#10-16 x 3/4" structural self-drilling screw with phillips pan head and silver Stalgard finish. #2 point can drill steel and aluminum applications up to .100" thick. Maximum load-bearing area: .500".
Product No.: HFDX445P
PRICE: $65.19
Dril-Flex Structural Self-Drilling Screws: #10-16 x ¾, #2 Point, Case of 6,000
#10-16 x 3/4" structural self-drilling screw with phillips pan head and silver Stalgard finish.
Product No.: HFDX445
PRICE: $589.62
Dril-Flex Structural Self-Drilling Screws  |  #10 Diameter  |  10-24 PWH
Dril-Flex Structural Self-Drilling Screws: #10-24 x 1-1/4, #3 Point, Box of 500
#10-24 x 1-1/4" structural self-drilling screw with wafer head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .150" thick. Maximum load-bearing area: .790".
Product No.: HFBL530P
PRICE: $65.19
Dril-Flex Structural Self-Drilling Screws: #10-24 x 1-1/4, #3 Point, Case of 5000
#10-24 x 1-1/4" structural self-drilling screw with wafer head and silver Stalgard finish.
Product No.: HFBL530
PRICE: $521.50
Dril-Flex Structural Self-Drilling Screws  |  #12 Diameter  |  12-14 HWH
Dril-Flex Structural Self-Drilling Screws: #12-14 x 7/8, #3 Point, Box of 500
#12-14 x 7/8" structural self-drilling screw with hex washer head and silver Stalgard finish. For aluminum applications ONLY up to .187" thick. Maximum load-bearing area: .470".
Product No.: HFAF621P
PRICE: $68.83
Dril-Flex Structural Self-Drilling Screws: #12-14 x 7/8, #3 Point, Case of 5000
#12-14 x 7/8" structural self-drilling screw with hex washer head and silver Stalgard finish. For aluminum applications up to .187" thick. Maximum load-bearing area: .470".
Product No.: HFAF621
PRICE: $549.03
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1, #3 Point, HWH, Box of 500
12-14 x 1" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: 0.5".
Product No.: HFAF641P
PRICE: $108.60
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1, #3 Point, HWH, Case of 4000
12-14 x 1" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: 0.5".
Product No.: HFAF641
PRICE: $463.40
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1-1/2, #3 Point, HWH, Box of 500
#12-14 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: 1".
Product No.: HFAF681P
PRICE: $86.98
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1-1/2, #3 Point, HWH, Case of 2500
#12-14 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: 1".
Product No.: HFAF681
PRICE: $347.93
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1-1/2, #4 Point, Box of 500
#12-14 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. #4 point can drill steel and aluminum applications up to .250" thick. Maximum load-bearing area: 1.00".
Product No.: HFAF686P
PRICE: $81.15
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1-1/2, #4 Point, Case of 2500
#12-14 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF686
PRICE: $324.01
Dril-Flex Structural Self-Drilling Screws: #12-14 x 2, #3 Point, Box of 500
#12-14 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: 1.5".
Product No.: HFAF690P
PRICE: $97.09
Dril-Flex Structural Self-Drilling Screws: #12-14 x 2, #3 Point, Case of 2000
#12-14 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: 1.5".
Product No.: HFAF690
PRICE: $310.69
Dril-Flex Structural Self-Drilling Screws: #12-14 x 3, #3 Point, Box of 500
#12-14 x 3" structural self-drilling screw with hex washer head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .150" thick. Maximum load-bearing area: 2.50".
Product No.: HFAF715P
PRICE: $127.29
Dril-Flex Structural Self-Drilling Screws: #12-14 x 3, #3 Point, Case of 1000
#12-14 x 3" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF715
PRICE: $203.67
Dril-Flex Structural Self-Drilling Screws  |  #12 Diameter  |  12-14 UFH
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1, #3 Point, UFH, Box of 500
#12-14 x 1" structural self-drilling screw with undercut flat head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: .500".
Product No.: HFBL215P
PRICE: $77.72
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1, #3 Point, UFH, Case of 4000
#12-14 x 1" structural self-drilling screw with undercut flat head and silver Stalgard finish. Can drill steel and aluminum applications up to .187" thick. Maximum load-bearing area: .500".
Product No.: HFBL215
PRICE: $497.41
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1-1/2, #3 Point, UFH, Box of 500
#12-14 x 1-1/2" structural self-drilling screw with phillips undercut flat head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .150" thick. Maximum load-bearing area: 1.00".
Product No.: HFBL223P
PRICE: $49.48
Dril-Flex Structural Self-Drilling Screws: #12-14 x 1-1/2, #3 Point, UFH, Case of 2500
#12-14 x 1-1/2" structural self-drilling screw with phillips undercut flat head and silver Stalgard finish.
Product No.: HFBL223
PRICE: $316.68
Dril-Flex Structural Self-Drilling Screws  |  #12 Diameter  |  12-24 HWH
Dril-Flex Structural Self-Drilling Screws: #12-24 x 1-3/4", #5 Point, Box of 500
#12-24 x 1-3/4" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .500" thick. Maximum load-bearing area: .800".
Product No.: HFAF755P
PRICE: $130.44
Dril-Flex Structural Self-Drilling Screws: #12-24 x 1-3/4, #5 Point, Case of 2500
#12-24 x 1-3/4" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .500" thick. Maximum load-bearing area: .800".
Product No.: HFAF755
PRICE: $521.78
Dril-Flex Structural Self-Drilling Screws  |  1/4" Diameter  |  1/4-14 HWH
Dril-Flex Structural Self-Drilling Screws: 1/4-14 x 1, #3 Point, Box of 500
1/4"-14 x 1" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .210" thick. Maximum load-bearing area: 0.45".
Product No.: HFAF816P
PRICE: $103.96
Dril-Flex Structural Self-Drilling Screws: 1/4-14 x 1, #3 Point, Case of 3000
1/4"-14 x 1" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .210" thick. Maximum load-bearing area: 0.45".
Product No.: HFAF816
PRICE: $498.99
Dril-Flex Structural Self-Drilling Screws: 1/4-14 x 1-1/2, #3 Point, Box of 500
1/4"-14 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .210" thick. Maximum load-bearing area: 0.95".
Product No.: HFAF841P
PRICE: $113.41
Dril-Flex Structural Self-Drilling Screws: 1/4-14 x 1-1/2, #3 Point, Case of 2000
1/4"-14 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .210" thick. Maximum load-bearing area: 0.95".
Product No.: HFAF841
PRICE: $362.91
Dril-Flex Structural Self-Drilling Screws: 1/4-14 x 2, #3 Point, Box of 500
1/4"-14 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .210" thick. Maximum load-bearing area: 1.45".
Product No.: HFAF846P
PRICE: $127.27
Dril-Flex Structural Self-Drilling Screws: 1/4-14 x 2, #3 Point, Case of 1500
1/4"-14 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .210" thick. Maximum load-bearing area: 1.45".".
Product No.: HFAF846
PRICE: $305.45
Dril-Flex Structural Self-Drilling Screws  |  1/4" Diameter  |  1/4-20 HWH
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 1-1/8, #4 Point, Box of 500
1/4"-20 x 1-1/8" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 0.5".
Product No.: HFAF865P
PRICE: $119.36
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 1-1/8, #4 Point, Case of 2500
1/4"-20 x 1-1/8" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 0.5".
Product No.: HFAF865
PRICE: $477.41
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 1-1/2, #4 Point, Box of 500
1/4"-20 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 0.83".
Product No.: HFAF876P
PRICE: $129.75
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 1-1/2, #4 Point, Case of 2000
1/4"-20 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 0.83".
Product No.: HFAF876
PRICE: $415.21
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 1-1/2, #5 Point, Box of 500
1/4"-20 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF888P
PRICE: $194.57
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 1-1/2, #5 Point, Case of 2000
1/4"-14 x 1" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications up to .500" thick. Maximum load-bearing area: 0.800".
Product No.: HFAF888
PRICE: $622.63
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 2, #4 Point, Box of 500
1/4"-20 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 1.33".
Product No.: HFAF886P
PRICE: $137.04
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 2, #4 Point, Case of 1500
1/4"-20 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 1.33".
Product No.: HFAF886
PRICE: $328.80
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 2-1/2, #4 Point, Box of 500
1/4"-20 x 2-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 1.83".
Product No.: HFAF890P
PRICE: $185.87
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 2-1/2, #4 Point, Case of 1000
1/4"-20 x 2-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel and aluminum applications .210" to .312" thick. Maximum load-bearing area: 1.83".
Product No.: HFAF890
PRICE: $297.39
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 3-3/8, #4 Point, Case of 500
1/4"-20 x 3-3/8" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF900
PRICE: $158.44
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 4, #4 Point, Case of 500
1/4-20 x 4" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF910
PRICE: $197.08
Dril-Flex Structural Self-Drilling Screws  |  1/4" Diameter  |  1/4-20 UFH
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 3, #4 Point, Case of 500
1/4-20 x 3" structural self-drilling screw with phillips undercut flat head and silver Stalgard finish.
Product No.: HFBL330
PRICE: $148.45
Dril-Flex Structural Self-Drilling Screws: 1/4-20 x 4, #4 Point, Case of 500
1/4-20 x 4" structural self-drilling screw with phillips undercut flat head and silver Stalgard finish.
Product No.: HFBL340
PRICE: $189.30
Dril-Flex Structural Self-Drilling Screws  |  5/16" Diameter  |  5/16-18 HWH
Dril-Flex Structural Self-Drilling Screws: 5/16-18 x 1-1/2, #3 Point, Box of 500
5/16-18 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. #3 point can drill steel and aluminum applications up to .150" thick. Maximum load-bearing area: .850".
Product No.: HFAF940P
PRICE: $254.69
Dril-Flex Structural Self-Drilling Screws: 5/16-18 x 1-1/2, #3 Point, Case of 1000
5/16-18 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF940
PRICE: $407.51
Dril-Flex Structural Self-Drilling Screws  |  5/16" Diameter  |  5/16-24 HWH
Dril-Flex Structural Self-Drilling Screws: 5/16-24 x 1-1/2, #3 Point, Box of 500
5/16"-24 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel up to 0.187" thick and aluminum up to 0.25" thick. Maximum load-bearing area: 0.85".
Product No.: HFAF960P
PRICE: $254.69
Dril-Flex Structural Self-Drilling Screws: 5/16-24 x 1-1/2, #3 Point, Case of 1000
5/16"-24 x 1-1/2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel up to 0.187" thick and aluminum up to 0.25" thick. Maximum load-bearing area: 0.85".
Product No.: HFAF960
PRICE: $407.51
Dril-Flex Structural Self-Drilling Screws: 5/16-24 x 2, #3 Point, Box of 500
5/16"-24 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish. Can drill steel up to 0.187" thick and aluminum up to 0.25" thick. Maximum load-bearing area: 1.35".
Product No.: HFAF970P
PRICE: $287.80
Dril-Flex Structural Self-Drilling Screws: 5/16-24 x 2, #3 Point, Case of 1000
5/16"-24 x 2" structural self-drilling screw with hex washer head and silver Stalgard finish.
Product No.: HFAF970
PRICE: $460.48