Product Overview
4
PERFORMANCE DATA
1-800-435-7213
©2021 ELCO – REV. B
Allowable Tension Pull-Out Capacity of Screw Connections in Steel, lbf
1,2,3,4,5
Diameter Point Type
Thickness of Steel Not in Contact with Screw Head
18 Ga. 16 Ga. 14 Ga. 12 Ga. 1/8" 3/16" 1/4" 5/16"
#10-16 #2/#3 135 195 235 305 295 - - -
#10-24 #3 120
[8]
185
[7]
250
[6]
415
[6]
545
[7]
- - -
#12-14 #2/#3 130 205 265 330 510 665 - -
#12-24 #5 95
[8]
165
[7]
225
[6]
380
[6]
505
[7]
890
[8]
1,020 1,020
1/4"-14 #3 130 205 255 340 560 900 - -
1/4"-20 #4/#5 - 205
[6]
260
[6]
425
[6]
525
[7]
915
[7]
1,045 1,205
5/16"-18 #3 - - - 520 705 - - -
5/16"-24 #4 - - - 460 635 725 1,190 1,425
1. Allowable (ASD) strengths are based on a safety factor ,, determined in accordance with AISI S100-16.
2. Values are based on steel members with a minimum tensile strength of Fu = 45 ksi.
3. Allowable (ASD) pull-over capacities for other member thicknesses may be determined by interpolating within the table.
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. Unless otherwise noted, for steel with a minimum tensile strength Fu ≥ 58 ksi, multiply tabulated values by 1.29 and for steel with a minimum tensile strength Fu ≥ 65 ksi steel, multiply
tabulated values by 1.44.
6. For steel with a minimum tensile strength Fu ≥ 52 ksi, multiply tabulated values by 1.15.
7. For steel with a minimum tensile strength Fu ≥ 58 ksi, multiply tabulated values by 1.29.
8. Increasing values for higher steel tensile strength per Note 5 is not allowed.
Design Tension Pull-Out Capacity of Screw Connections in Steel, lbf
1,2,3,4,5
Diameter Point Type
Thickness of Steel Not in Contact with Screw Head
18 Ga. 16 Ga. 14 Ga. 12 Ga. 1/8" 3/16" 1/4" 5/16"
#10-16 #2/#3 215 310 380 490 475 - - -
#10-24 #3 194
[8]
295
[7]
400
[6]
665
[6]
875
[7]
- - -
#12-14 #2/#3 210 330 425 525 815 1,065 - -
#12-24 #5 155
[8]
265
[7]
360
[6]
610
[6]
810
[7]
1425
[8]
1,630 1,630
1/4"-14 #3 210 330 410 550 550 895 - -
1/4"-20 #4/#5 - 325
[6]
415
[6]
675
[6]
840
[7]
1,460
[7]
1,670 1,930
5/16"-18 #3 - - - 830 1,130 - - -
5/16"-24 #4 - - - 735 1,020 1,160 1,905 2,280
1. Design (LRFD) strengths are based on a resistance factor,
f
, determined in accordance with AISI S100-16.
2. Values are based on steel members with a minimum tensile strength of Fu = 45 ksi.
3. Design (LRFD) pull-out capacities for other member thicknesses may be determined by interpolating within the table.
4. 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.
5. Unless otherwise noted, for steel with a minimum tensile strength Fu ≥ 58 ksi, multiply tabulated values by 1.29 and for steel with a minimum tensile strength Fu ≥ 65 ksi steel, multiply
tabulated values by 1.44.
6. For steel with a minimum tensile strength Fu ≥ 52 ksi, multiply tabulated values by 1.15.
7. For steel with a minimum tensile strength Fu ≥ 58 ksi, multiply tabulated values by 1.29.
8. Increasing values for higher steel tensile strength per Note 5 is not allowed.
Ultimate Pull-Over Capacity of Screw Connections in Steel, lbf
1,3
Fastener Description
Minimum Thickness of Steel in Contact with Screw Head
18 Ga. 16 Ga. 14 Ga. 12 Ga. 1/8" 3/16" 1/4" 5/16"
#10-16 Phillips Pan Head 1,155
[2]
1,200 1,200 1,200 1,200 - - -
#10-16 5/16" Hex Washer Head 1,245 1,200 1,200 1,200 1,200 - - -
#10-24 Phillips Wafer Head 1,650
[2]
1,615
[2]
1,935
[2]
1,935
[2]
1,935
[2]
- - -
#12-14 5/16" Hex Washer Head 1,290 1610 2,015 1,835 1,835 1,835 - -
#12-14 Phillips Undercut Flat Head 1,060
[2]
1,455
[2]
1,845
[2]
2,160
[2]
2,160
[2]
2,160
[2]
- -
#12-24 5/16" Hex Washer Head 1,290 1,610 2,015 1,835 1,835 1,835 1,835 1,835
1/4"-14 3/8" Hex Washer Head 1,555 1,945 2,430 2,815 2,815 2,815 - -
1/4"-20 3/8" Hex Washer Head - 1,945 2,430 2,815 2,815 2,815 2,815 2,815
5/16"-18 3/8" Hex Washer Head - - - 3,045 3,045 - - -
5/16"-24 3/8" Hex Washer Head - - - 3,045 3,045 3,045 3,045 3,045
1. Unless otherwise noted, ultimate strengths are based on calculations in accordance with AISI S100-16, or on the calculated shear strength of the integral washer.
2. Ultimate strengths are based on laboratory testing.
3. 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).
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