Direct Fastening Technical Guide , Edition 22
3.2.5.2 MATERIAL SPECIFICATIONS
Fastener designation Fastener material Fastener plating 1 Steel washer or clip material 1 , 2 Washer or clip plating 1 , 2
X-P Carbon Steel 5 μm Zinc N / A N / A X-U Carbon Steel 5 μm Zinc Carbon Steel 5 μm Zinc
DS / EDS Carbon Steel 5 μm Zinc N / A N / A X-C Carbon Steel 5 μm Zinc Carbon Steel 5 μm Zinc
X-R , X-CR 3 SAE 316 N / A SAE 316 N / A
X-C / X-P / X-PN / X-S : G2 / G3 / B3
Carbon Steel 2-10 μm Zinc N / A N / A
X-CT Forming Nail Carbon Steel 5 μm Zinc N / A N / A BC X-C Carbon Steel 5 μm Zinc Carbon Steel 5 μm Zinc
1 The 5 μm zinc coating is in accordance with ASTM B 633 , SC 1 , Type III . Refer to Section 2.3.3.1 for more information . 2 Most fasteners have a plastic washer for guidance when installing . Not all fastener lengths have a pre-mounted steel washer . Refer to Section 3.2.2.4 for more information on available fasteners . 3 . The X-CR and X-R fastener material is a proprietary material , which provides a corrosion resistance equivalent to SAE 316 stainless steel . The steel washer material is SAE 316 stainless steel .
* More details about the innovative X-P and X-U fasteners can be found in Section 3.2.6 .
3.2.5.3 TECHNICAL DATA
Allowable loads in normal weight concrete 1 , 2
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Concrete compressive strength |
Fastener description |
Fastener |
Shank diameter in . ( mm )
Minimum embedment in . ( mm )
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Tension lb ( kN )
2000 psi 4000 psi 6000 psi 8000 psi
Shear lb ( kN )
Tension lb ( kN )
Shear lb ( kN )
Tension lb ( kN )
Shear lb ( kN )
Tension lb ( kN )
Shear lb ( kN )
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Premium Concrete Fastener
Universal Knurled Shank Fasteners
Standard Fastener
Heavy Duty Fastener
Stainless Steel Fastener
Gas Fastener
X-P 0.157 ( 4.0 )
X-U 0.157 ( 4.0 )
X-C ( Black collated
0.138 ( 3.5 ) strip or guidance washer )
DS 0.177 ( 4.5 )
X-CR
0.145 ( 3.7 )
0.157 ( 4.0 )
3 / 4 ( 19 ) 100 ( 0.44 ) 155 ( 0.69 ) 100 ( 0.44 ) 175 ( 0.78 ) 105 ( 0.47 ) 205 ( 0.91 ) 135 ( 0.60 ) 205 ( 0.91 )
1 ( 25 ) 165 ( 0.73 ) 220 ( 0.98 ) 180 ( 0.80 ) 225 ( 1.00 ) 150 ( 0.67 ) 300 ( 1.33 ) 150 ( 0.67 ) 215 ( 0.96 ) 1-1 / 4 ( 32 ) 240 ( 1.07 ) 310 ( 1.38 ) 280 ( 1.25 ) 310 ( 1.38 ) 180 ( 0.80 ) 425 ( 1.89 ) – – 1-1 / 2 ( 38 ) 310 ( 1.38 ) 420 ( 1.87 ) – – – – – – 3 / 4 ( 19 ) 100 ( 0.44 ) 125 ( 0.57 ) 100 ( 0.44 ) 125 ( 0.57 ) 105 ( 0.47 ) 205 ( 0.91 ) – – 1 ( 25 ) 165 ( 0.73 ) 190 ( 0.85 ) 170 ( 0.76 ) 225 ( 1.00 ) 110 ( 0.49 ) 280 ( 1.25 ) – – 1-1 / 4 ( 32 ) 240 ( 1.07 ) 310 ( 1.38 ) 280 ( 1.25 ) 310 ( 1.38 ) 180 ( 0.80 ) 425 ( 1.89 ) – – 1-1 / 2 ( 38 ) 275 ( 1.22 ) 420 ( 1.87 ) 325 ( 1.45 ) 420 ( 1.87 ) – – – – 3 / 4 ( 19 ) 45 ( 0.20 ) 75 ( 0.33 ) 65 ( 0.29 ) 105 ( 0.47 ) 95 ( 0.42 ) 195 ( 0.87 ) – – 1 ( 25 ) 85 ( 0.38 ) 150 ( 0.67 ) 160 ( 0.71 ) 200 ( 0.89 ) 105 ( 0.47 ) 270 ( 1.20 ) – – 1-1 / 4 ( 32 ) 130 ( 0.58 ) 210 ( 0.93 ) 270 ( 1.20 ) 290 ( 1.29 ) 165 ( 0.73 ) 325 ( 1.45 ) – – 1-1 / 2 ( 38 ) 175 ( 0.78 ) 260 ( 1.16 ) 270 ( 1.20 ) 360 ( 1.60 ) – – – – 3 / 4 ( 19 ) 50 ( 0.22 ) 120 ( 0.53 ) 125 ( 0.56 ) 135 ( 0.60 ) – – – – 1 ( 25 ) 130 ( 0.58 ) 195 ( 0.87 ) 155 ( 0.69 ) 240 ( 1.07 ) – – – – 1-1 / 4 ( 32 ) 220 ( 0.98 ) 385 ( 1.71 ) 270 ( 1.20 ) 425 ( 1.89 ) – – – – 1-1 / 2 ( 38 ) 300 ( 1.33 ) 405 ( 1.80 ) 355 ( 1.58 ) 450 ( 2.00 ) – – – – 3 / 4 ( 19 ) 30 ( 0.13 ) 40 ( 0.18 ) 65 ( 0.29 ) 40 ( 0.18 ) – – – – 1 ( 25 ) 55 ( 0.24 ) 185 ( 0.82 ) 120 ( 0.53 ) 190 ( 0.85 ) 100 ( 0.44 ) 170 ( 0.76 ) – – 1-1 / 4 ( 32 ) 110 ( 0.49 ) 290 ( 1.29 ) 125 ( 0.56 ) 300 ( 1.33 ) 120 ( 0.53 ) 440 ( 1.96 ) – – 1-1 / 2 ( 38 ) 265 ( 1.18 ) 405 ( 1.80 ) 350 ( 1.56 ) 450 ( 2.00 ) – – – –
X-C B3 , X-C G3 0.118 ( 3.0 ) 3 / 4 ( 19 ) 110 ( 0.5 ) 190 ( 0.9 ) 110 ( 0.5 ) 190 ( 0.9 ) 110 ( 0.5 ) 190 ( 0.9 ) – –
Premium Gas Fastener |
X-P 17 G2 , X-P 20 G2 , X-P G3 , X-P B3 |
0.118 ( 3.0 ) |
5 / 8 ( 16 ) – – 50 ( 0.2 ) 120 ( 0.5 ) 50 ( 0.2 ) 90 ( 0.4 ) – –
3 / 4 ( 19 ) 80 ( 0.4 ) 120 ( 0.5 ) 50 ( 0.2 ) 120 ( 0.5 ) 50 ( 0.2 ) 90 ( 0.4 ) – –
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Forming Fastener
X-CT 47 3 0.145 ( 3.7 ) 1 ( 25 ) 60 ( 0.27 ) 65 ( 0.29 ) – – – – – – X-CT 62 3 0.145 ( 3.7 ) 1 ( 25 ) 75 ( 0.33 ) 75 ( 0.33 ) – – – – – –
1 The tabulated allowable load values are for the low-velocity fasteners only , using a safety factor that is greater than or equal to 5.0 , calculated in accordance with ICC-ES AC70 . Wood or steel members connected to the substrate must be investigated in accordance with accepted design criteria . 2 Multiple fasteners are recommended for any attachment . 3 For temporary fastening of formwork only .
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