Screw diameter #
1/4-20
Recess
PHILLIPS 3
Core hardness (HV)
286-372
Surface hardness (HV)
min. 446
Units per bag
500
Outer box units
2500
GTIN
8425586587370
Weight (kg/th)
4.750
Screw length L (inch)
1/2
Tolerance L (inch)
-0.03
Head diameter D (inch)
0.492
Tolerance D (inch)
0 -0.019
Head height K (inch)
0.175
Tolerance K (inch)
0 -0.013
Breaking torque (Lb-ins.)
160.0
Weight (lb/th)
10.472
Thread pitch P (inch)
1.29
In order to ensure a safe installation and stable clamping force, it's relevant to pay attention to the pilot hole diameter. The recommended dimensions for core hole diameter and length of engagement are available at Design Guidelines.