Product Overview

ManualsBrandsDewalt ManualsAir Conditioning Installation Parts1/4" - 20 x 2-1/2" Dril-Flex Hex Washer Head Screws (Box of 1000)

PERFORMANCE DATA

1-800-435-7213

Ultimate, Allowable (ASD) and Design (LRFD) Shear (Bearing) Capacity of Screw Connections in Aluminum, lbf

1,2,3,4,5,6

Diameter Point Type

6063-T5 Aluminum

1/8"-1/8" 1/8"-1/4"

Ultimate ASD LRFD Ultimate ASD LRFD

#10-16 #2/#3 1,205 400 600 - - -

#12-14 #2/#3 1,475 490 740 2,040 680 1,020

1/4"-14 #3 1,640 545 820 2,365 790 1,185

1/4"-20 #4 1,645 550 825 2,400 800 1,200

5/16"-18 #3 1,750 585 875 2,470 825 1,235

5/16"-24 #4 1,520 505 760 2,355 785 1,175

1. Ultimate strengths are based on laboratory tests. Allowable (ASD) and Design (LRFD) capacities are based on a Safety Factor, =3.0, and a resistance factor,

=0.5, respectively.

2. Clearance holes were provided in the top sheet of aluminum. Clearance holes shall be 13/64, 15/64, 17/64, and 21/64 for #10, #12, 1/4-inch, and 5/16-inch diameter fasteners, respectively.

3. Allowable (ASD) and Design (LRFD) capacities are based on aluminum members with a minimum tensile strength of Fu = 22 ksi.

4. For ASD shear connections, the lower of the ASD shear (bearing) strength and ASD fastener shear strength must be used for design.

5. For LRFD shear connections, the lower of the LRFD shear (bearing) strength and LRFD fastener shear strength must be used for design.

6. For aluminum with an ultimate tensile strength, Fu ≥ 27 ksi, allowable and design capacities may be increased by a factor of 1.20.

Ultimate, Allowable (ASD) and Design (LRFD) Tension Pull-Out Capacity of Screw Connections in Aluminum, lbf

1,2,3,4,5,6,7

Diameter Point Type

6063-T5 Aluminum

1/8" 1/4" 3/8"

Ultimate ASD LRFD Ultimate ASD LRFD Ultimate ASD LRFD

#10-16 #2/#3 630 210 315 - - - - - -

#12-14 #2/#3 770 255 385 1,875 625 940 - - -

1/4"-14 #3 825 275 410 1,990 665 995 - - -

1/4"-20 #4 735 245 370 1,705 570 850 3,045 1,015 1,525

5/16"-18 #3 920 305 460 2,435 810 1,220 - - -

5/16"-24 #4 855 285 430 2,105 700 1,055 - - -

1. Ultimate strengths are based on laboratory tests. Allowable (ASD) and Design (LRFD) capacities are based on a Safety Factor, =3.0, and a resistance factor,

=0.5, respectively.

2. Clearance holes were provided in the top sheet of aluminum. Clearance holes shall be 13/64", 15/64", 17/64", and 21/64" for #10, #12, 1/4-inch, and 5/16-inch diameter fasteners,

respectively.

3. Allowable (ASD) and Design (LRFD) capacities are based on aluminum members with a minimum tensile strength of Fu = 22 ksi.

4. For ASD tension connections, the lower of the ASD tension strength, ASD pull-out strength and ASD pull-over strength must be used for design.

5. For LRFD tension connections, the lower of the LRFD tension strength, LRFD pull-out strength and LRFD pull-over strength must be used for design.

6. Allowable (ASD) and Design (LRFD) capacities for other member thicknesses may be determined by interpolating within the table.

7. For aluminum with an ultimate tensile strength, Fu ≥ 27 ksi, allowable and design capacities may be increased by a factor of 1.20.

DRIL-FLEX