Elco Dril-Flex Structural Hex Washer Head Self-Drilling Screws: #14-20 x 4, #4 Point
: ELCO Construction Fasteners & Screws, Shop ELCO Dril-Flex Self Drilling Screws
Dril-Flex screws are engineered and processed to help prevent hydrogen-induced brittle failures. Each fastener undergoes the unique Flex Technology Õ Â dual-hardening process, ensuring the optimal combination of ductility and hardness required for maximum performance in the field. Stalgard Õ Â 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. Virtually immune to delayed embrittlement failures
Precision-engineered and dual heat treated drill screws provide the strength, ductility and resistance to embrittlement required for critical applications. Elco Dril-Flex self-drilling screws meet the same construction specifications Hilti Kwik-Flex
|ÕÌ_Description||1/4-20 x 4" HWH|
|Load Bearing Area||3.50 in|
|Finish||Silver Stalgard Õ Â Coating|
|Head Size||1/4 in Diameter, 3/8 in Hex Washer Head|
|Screw Type||Dril-Flex Õ Â Structural Drill Screws|
|Head & Drive Styles||Hex Washer|
|USA/Import||Made in USA|
Approvals and Listings
COLA approved and ICC listed
Features and Benefits
- High-hardness points and lead threads for drilling and tapping
- Lower-hardness in load-bearing threads for ductility
- Virtually immune to delayed embrittlement failures
- Stalgard Õ Â coating provides 1000 hours of salt spray resistance (per ASTM B117)
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