Direct Fastening Technical Guide , Edition 24
3.2.13.1 Product description 3.2.13.2 Material specifications 3.2.13.3 Technical data 3.2.13.4 Ordering information
3.2.13 X-ST-GR STUD FASTENERS FOR FASTENING TO STEEL
3.2.13.1 PRODUCT DESCRIPTION
The Hilti X-ST-GR threaded studs consist of a threaded sleeve and a drive pin . The drive pin is manufactured from a proprietary CrMnMo alloy which has corrosion resistance equivalent to SAE 316 stainless steel . The proprietary alloy provides a high hardness level , increasing the application limit when compared with traditional alloys . See Material Specification and Application Limit sections with more information .
Product features :
• CrMnMo Alloy with improved material hardness
• Base steel thickness from 1 / 4 inch to full steel *
• With proper tool and cartridge selection , can be used in high strength base steel material up to 92 ksi .
* Performance above 1 / 2 " is dependent on steel hardness , see Application Limit in Steel with more information
X-ST-GR
Listings / Approvals
ICC-ES ( International Code Council ) ESR-2347 with LABC / LARC Supplement
3.2.13.2 MATERIAL SPECIFICATIONS
Part |
Material designation |
Tensile strength , |
|
|
Fu ksi ( N / mm 2 ) |
Shank CrMnMo Alloy P558 ≥ 290 ( 2000 ) Threaded Sleeve Stainless Steel ≥ 110 ( 750 ) Guidance Washer Polyethylene N / A
M8 M8
9 mm 12 mm [ 0.354 "] [ 0.472 "]
25 mm [ 0.894 "]
X-ST-GR M8 / 5 P8
14 mm 12 mm [ 0.551 "] [ 0.472 "]
30 mm [ 1.181 "]
X-ST-GR M8 / 10 P8
Ø 8 mm [ 0.315 "]
Ø 8 mm [ 0.315 "]
3.2.13.3 TECHNICAL DATA
Allowable Loads in Minimum ASTM A36 ( Fy ≥ 36 ksi ; Fu ≥ 58 ksi ) Steel 1
Load type Steel thickness in .
1 / 4 , 3 / 8 or 1 / 2-inch Steel
Tension lb ( kN ) 405 ( 1.8 ) Shear lb ( kN ) 405 ( 1.8 ) Torque ft-lb ( Nm ) 6.0 ( 8.1 ) Moment ft-lb ( Nm ) 4.0 ( 5.5 )
1 The tabulated allowable load values are for the X-ST-GR fasteners only , using a safety factor of 5.0 to the average ultimate values obtained based on testing in accordance with ICC-ES AC70 and ASTM E1190 . Some conditions like high wind loads , shock or fatigue may require a different safety factor .
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