1111 80TH ST SW 100 JAMCO 2025-01-23

ESR-3223 I Most Widely Accepted and Trusted TABLE 1-1TW BUILDEX TEKS SELECT"'STRUCTURAL FASTENERS DRILLING LENGTH OF MINIMUM DESCRIPTION NOMINAL HEAD CAPACITY2 (in.) LOAD- HEAD DRILL REQUIRED (nom.size-tpi x DIAME t ER DIAMETER BEARING length) (in.) STYLE' (in.) POINT Min. Max. AREA' PROTRUSION" (inch) (inch) #10-16X1/4" 0.190 HWH 0.400 Tek/3 0.036 0.150 0.500 0.408 #12-1403" 0.216 HWH 0.415 Tek/3 0.036 0.187 0.470 0.529 #12-14x1" 0.216 HWH 0.415 Tekl3 0.036 0.187 0.500 0.544 #12-14x1" 0.216 UPFH 0.418 Tek/3 0.036 0.187 0.500 0.544 #12-14x1112" 0.216 HWH 0.415 Tekl3 0.036 0.187 1.000 0.544 #12-14x2" 0.216 HWH 0.415 Tek/3 0.036 0.187 1.500 0.544 '14-14x1" 0.250 HWH 0.510 Tek/3 0.036 0.210 0.450 0.565 1/4-14x11/2" 0.250 HWH 0.510 Tek/3 0.036 0.210 0.950 0.565 1/4-20x1'15" 0.250 HWH 0.510 Tek/4 0.210 0.312 0.500 0.635 1/4-20x11I2" 0.250 HWH 0.510 Tekl4 0.210 0.312 0.830 0.670 1/4-20x2" 0.250 HWH 0.510 Tek14 0.210 0.312 1.330 0.685 1l4-20x21/2" 0.250 HWH 0.510 Tekf4 0.210 0.312 1.830 0.670 For SI:1 inch=25.4 mm. 'Head styles:HWH=hex washer head;UPFH=undercut Phillips flat head. 2 Drilling capacity refers to the minimum and maximum total l allowable thicknesses of steel the fastener is designed to drill through. 'The load-bearing area is the threaded portion of the screw that is heat-treated to HRC 30-34.See Sections 3.0 and 42 and Figures 1 and 2 for further clarification. "The minimum required protrusion is the larger of the induction hardened zone or the length from tip to the third thread. TABLE 2-ALLOWABLE TENSILE PULL-OUT LOADS(pounds-force)1'43,4,5 NOMINAL DESIGN THICKNESS OF STEEL SHEET SCREW DIAMETER NOT IN CONTACT WITH THE SCREW HEAD(inch) DESIGNATION (in.) 0.048 0.060 0.075 0.105 1/3 31,6 1/4 #10-16 HWH 0.190 139 181 211 388 404 - - #12-14 HWH 0.216 138 188 229,t 481 496 808 - #12-14 UPFH 0.216 140 218 250 473 507 836 - 1/4-14 HWH 0.250 169 224 273 431 582 971 - 1/4-20 HWH 0.250 157 231 281 427 571 1065 1422 For SI:1 inch=25.4 mm,1 lbf=4.45 N,I ksi=6.89 MPa. 'For tension connections,the lower of the allowable pull-out,pull-over,and fastener tension strength found in Tables 2,3,and 4,respectively,must he used for design. 'Nominal strengths are based on laboratory tests. 'Steel must comply with AISI 5100 and have a minimum tensile strength of 58 ksi. "To calculate LRFD values,multiply values in the table by the ASO safety factor of 3.0 and multiply again with the LRFD resistance factor of 0.5. 'The"-"symbol denotes pull-out not tested. TABLE 3-ALLOWABLE TENSILE PULL-OVER LOADS(pounds-force)12,3,45 NOMINAL NOMINAL DESIGN THICKNESS OF STEEL SHEET SCREW EFFECTIVE PULL- IN CONTACT WITH SCREW HEAD(inch) DIAMETER DESIGNATION (in.) OVER(irtAMETER 0.048 0.060 0.075 0.105 1/3 410-16 HWH 0.190 0.400 557 641 714 - - #12-14 HWH 0.216 0.415 619 793 893 1092 - #12-14 UPFH 0.216 0.418 489 620 712 - - 1/4-14 HWH 0.250 0.510 661 952 1069 1515 - 1/4-20 HWH 0.250 0.510 667 910 1070 1568 - For Si:1 inch=25.4 mm,1 lbf=4.45 N;1 ksi=6.89 MPa. 'For tension connections,the lower of the allowable pull-out,pull-over,and fastener tension strength found in Tables 2,3,and 4,respectively,must be used for design. 'Nominal strengths are based on laboratory tests. 'Steel must comply with AISI 8100 and have a minimum tensile strength of 58 ksi. 4To calculate LRFD values,multiply values in the table by the ASO safety factor of 3.0 and multiply again with the LRFD resistance factor of 0.5. 'The"-"symbol denotes pull-over not tested. 18I2s