Product Overview

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

PERFORMANCE DATA

1-800-435-7213

Allowable (ASD) Shear (Bearing) Capacity of Screw Connections in Aluminum, lbf

1,2,3,4,5,6

Diameter Head Styles

Aluminum Thickness (Lapped Sheets/Bars)

1/16" - 1/16" 1/16" - 1/8" 1/8" - 1/8" 1/8" - 1/4"

6063-T5 6063-T6 6061-T6 6063-T5 6063-T6 6061-T6 6063-T5 6063-T6 6061-T6 6063-T5 6063-T6 6061-T6

#8-18 HWH, PPH 115 155 215 115 155 215 220 310 430 - - -

#10-16 HWH, PPCKH, PFH 130 180 250 130 180 250 260 355 500 - - -

#12-14 HWH, PPCKH, PUFH 150 205 285 150 205 285 295 405 565 295 405 565

#12-24 HWH 150 205 285 150 205 285 295 405 565 295 405 565

1/4"-14 HWH 170 235 330 170 235 330 345 470 655 345 470 655

1/4"-20 HWH 170 235 330 170 235 330 345 470 655 345 470 655

1. Allowable (ASD) strengths are based on a safety factor,  =3.00, determined in accordance with the Aluminum Design Manual, AA ADM1-2015.

2. Values are based on aluminum members with the following minimum tensile strengths: 6063-T5, F

= 22 ksi; 6063-T6, F

= 30 ksi; 6061-T6, F

= 42 ksi

3. The first number is the thickness of aluminum in contact with the screw head, the second number is the thickness of the aluminum not in contact with the screw head.

4. Allowable (ASD) Shear (Bearing) capacities for other member thicknesses may be determined by interpolating within the table.

5. For aluminum with the following tensile strengths: 6063-T5, F

= 27 ksi; 6063-T6, F

= 35 ksi; 6061-T6, F

= 45 ksi; multiply tabulated values by 1.22, 1.16, 1.07 respectively.

6. For ASD shear connections, the lower of the ASD Shear (Bearing) Capacity and the ASD Fastener Shear Strength must be used for design.

Design (LRFD) Shear (Bearing) Capacity of Screw Connections in Aluminum, lbf

1,2,3,4,5,6

Diameter Head Styles

Aluminum Thickness (Lapped Sheets/Bars)

1/16" - 1/16" 1/16" - 1/8" 1/8" - 1/8" 1/8" - 1/4"

6063-T5 6063-T6 6061-T6 6063-T5 6063-T6 6061-T6 6063-T5 6063-T6 6061-T6 6063-T5 6063-T6 6061-T6

#8-18 HWH, PPH 170 230 325 170 230 325 335 460 645 - - -

#10-16 HWH, PPCKH, PFH 195 265 375 195 265 375 390 535 750 - - -

#12-14 HWH, PPCKH, PUFH 225 305 425 225 305 425 445 610 850 445 610 850

#12-24 HWH 225 305 425 225 305 425 445 610 850 445 610 850

1/4"-14 HWH 260 350 490 260 350 490 515 705 985 515 705 985

1/4"-20 HWH 260 350 490 260 350 490 515 705 985 515 705 985

1. Design (LRFD) strengths are based on a safety factor,

=0.50, determined in accordance with the Aluminum Design Manual, AA ADM1-2015.

2. Values are based on aluminum members with the following minimum tensile strengths: 6063-T5, F

= 22 ksi; 6063-T6, F

= 30 ksi; 6061-T6, F

= 42 ksi

3. The first number is the thickness of aluminum in contact with the screw head, the second number is the thickness of the aluminum not in contact with the screw head.

4. Design (LRFD) Shear (Bearing) capacities for other member thicknesses may be determined by interpolating within the table.

5. For aluminum with the following tensile strengths: 6063-T5, F

= 27 ksi; 6063-T6, F

= 35 ksi; 6061-T6, F

= 45 ksi; multiply tabulated values by 1.22, 1.16, 1.07 respectively.

6. For LRFD shear connections, the lower of the LRFD Shear (Bearing) Capacity and the LRFD Fastener Shear Strength must be used for design.

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"

Ultimate ASD LRFD Ultimate ASD LRFD

#8-18 #2 730 245 365 - - -

#10-16 #2 810 270 405 - - -

#10-16 #3 785 260 390 - - -

#12-14 #2 920 305 460 - - -

#12-14 #3 795 265 395 - - -

#12-24 #5 440 145 220 1,625 540 815

1/4"-14 #2 1,065 355 535 - - -

1/4"-20 #3 845 280 420 2,270 755 1,135

1/4"-20 #5 490 165 245 1,405 470 700

1. Ultimate strengths are based on laboratory tests. Allowable (ASD) and Design (LRFD) capacities are based on a safety factor,  = 3.00, and a resistance factor,

= 0.50, respectively.

2. Ultimate load capacities must be reduced by a minimum safety factor to determine allowable loads (ASD) or by a load resistance factor to determine strength design capacities (LRFD).

3. Allowable (ASD) and Design (LRFD) capacities are based on 6063-T5 aluminum members with a minimum tensile strength of F

= 22 ksi.

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

5. 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.

6. 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.

7. For aluminum with a minimum tensile strength F

≥ 27 ksi, multiply tabulated values by 1.22.

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