hex washer head




Parameters

SIZE NO. ST3.5 ST3.9 ST4.2 ST4.8 ST5.5 ST6.3
    SELF DRILLING SELF DRILLING SELF DRILLING SELF DRILLING SELF DRILLING SELF DRILLING
P +/-6% 1.30 1.40 1.40 1.60 1.80 1.80
d max 3.53 3.91 4.22 4.80 5.46 6.25
min 3.35 3.73 4.04 4.62 5.28 6.03
dk max 8.3 8.30 8.80 10.50 11.00 13.00
min 7.60 7.60 8.20 9.80 10.00 12.00
s max 1.00 1.00 7.00 8.00 8.00 10.00
min 5.32 5.32 6.78 7.78 7.78 9.78
k max 3.45 3.45 4.25 4.45 5.45 6.45
min 3.20 3.20 4.00 4.15 5.15 6.15
d1 max 2.90 3.05 3.55 4.05 4.70 5.60
min 2.80 3.00 3.50 3.95 4.60 5.50
drilling capacity max 2.25 2.40 3.00 4.40 5.25 6.00
min 0.70 0.70 1.75 1.75 1.75 2.00
e   5.96 5.96 7.59 8.71 8.71 10.95
b   0.60 0.60 0.90 0.90 1.00 1.00
DEPTH L Lg   min
mm max min
9.5 10.25 8.75 2.85          
13 13.90 12.10 6.20 5.80 4.30 4.70    
16 16.90 15.10 9.20 8.80 7.30 5.80 5.00  
19 20.00 18.00 12.10 11.70 10.30 8.70 8.00 7.00
22 23.00 21.00 15.31 14.70 13.30 11.70 11.00 10.00
25 26.00 24.00 18.10 17.70 16.30 14.70 14.00 13.00
32 33.25 30.75   24.50 23.00 21.50 21.00 20.00
38 39.25 36.75   30.50 29.00 27.50 27.00 26.00
45 46.25 43.75       34.50 34.00 33.00
50 51.25 48.75       39.50 39.00 38.00
                 
PS: L<=50mm,FULL THREAD,L>=50mm,THE THREAD LENGTH NEED SELLER DISCUSS WITH THE BUYER.