Screw diameter #
1/4-20
Screw length L (inch)
1
Tolerance L (inch)
-0.05
Head diameter D (inch)
0.492
Tolerance D (inch)
0 -0.019
Head height K (inch)
0.175
Tolerance K (inch)
0 -0.013
Recess
PHILLIPS 3
Breaking torque (Lb-ins.)
160.0
Core hardness (HV)
286-372
Surface hardness (HV)
min. 446
Units per bag
500
Outer box units
2000
GTIN
8425586587455
Weight (kg/th)
7.153
Weight (lb/th)
15.770
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.