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

DRIL-FLEX

SAE Grade 5 properties

in “Load-Bearing Area”

of fastener

Hardened point and

tapping threads

Elco

Flag

Raised

Circle

PERFORMANCE DATA

Fastener Strengths

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

Description

Tension (lbf) Shear (lbf) Minimum

Torsional Strength

(in-lbs)

Ultimate ASD LRFD Ultimate ASD LRFD

#10-16 2,275 760 1,140 1,460 485 730 61

#10-24 2,610 870 1,305 1,080 360 540 65

#12-14 3,215 1,070 1,610 1,990 665 995 92

#12-14 (PUFH) 2,630 875 1,315 2,090 695 1,045 92

#12-24 4,175 1,390 2,090 2,500 835 1,250 100

1/4"-14 4,360 1,455 2,180 2,690 895 1,345 150

1/4"-20 4,620 1,540 2,310 2,615 870 1,310 156

5/16"-18 8,070 2,690 4,035 4,565 1,520 2,285 425

5/16"-24 8,755 2,920 4,380 5,470 1,825 2,735 425

1. Ultimate strengths are based on laboratory tests.

2. Allowable (ASD) strengths are based on a safety factor ,, of 3.0 in accordance with ICC-ES AC118 and AISI S100-16.

3. Design (LRFD) strengths are based on a resistance factor,

, of 0.50 in accordance with ICC-ES AC118 and AISI S100-16.

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

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

Ultimate Shear (Bearing) Capacity of Screw Connections in Steel, lbf

1,2

Diameter Point Type

Steel

18-18 Ga. 18-14 Ga. 16-16 Ga. 14-14 Ga. 1/8" - 3/16" 3/16" - 1/4" 1/4" - 12 Ga.

#10-16 #3 925 1,195 1,140 - - - -

#10-16 (PPH) #2 865 865 1,210 - - - -

#10-24 (PWH) #3 880 1,545 1,445 - - - -

#12-14 #2/#3 895 1,460 1,290 1,255 - - -

12-14 (PUFH) #3 880 1,648 1,304 1,688 - - -

#12-24 #5 785 1,650 1,285 1,750 1,705 1,985 1,620

1/4"-14 #3 950 1,595 1,310 1,665 1,610 - -

1/4"-20 #4/#5 975 1,330 1,350 1,700 1,460 1,570 1,395

5/16"-18 #3 1,025 1,585 1,410 2,245 - - -

5/16"-24 #4 - - - - 3,400 2,485 2,240

1. Ultimate strengths are based on laboratory tests.

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).