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Home Builder's Corner Technical Data Caliburn™

Technical Data Caliburn™

Concrete Flat Head Screw

Countersink head
Unique thread design
Climatek™ coated

Concrete Pan Head Screw

Unique thread design
Climatek™ coated
For electrical and plumbing applications

Concrete Flat Washer Head Screw

Unique thread design
Climatek™ coated

Caliburn™ Concrete Screw Test Data

TECHNICAL DATA - Caliburn™
Screw Size	Embed. Depth	2000 psi Concrete		Bit Size	Drill Size
		Tension Pullout lbs/in	Shear lbs/in
1/4 x 1"3/4	1"1/2	1655	1505	T25	3/16"
1/4 x 2"1/4	2"	2120	2055	T25	3/16"
19/64 x 2"3/4	2"1/2	2209	3135	T40	1/4"
19/64 x 3"1/2	3"1/4	2523	3200	T40	1/4"
19/64 x 5"	4"3/4	5724	3300	T40	1/4"

NOTE:

• All values are based on close tolerance holes drilled a minimum of 1/4" deeper than embedment depth, using GRK drill bits.
• All listed values shown at left are average pullout and shear values for GRK's Caliburn™, Caliburn™ PH and Caliburn™ XL screws. Values will vary depending on a number of factors, including the quality of the concrete and size of the drill hole.
• These figures are only offered as a guide, are not guaranteed by GRK and not reduced by any safety factor.
• For safety factor requirements in your area, contact your local building official architect or engineer. Testing was performed according to ASTM standard E-488-96. For specific calculations refer to ACI #318 Appendix D

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