DIN 965 Cross Recessed Countersunk Flat Head Screws Zinc Plating
DIN 965 Cross Recessed Countersunk Flat Head Screws Machine Screw Zinc Plating
A zinc plating provides mild corrosion resistance. These screws are angled under the head to sit flush
within countersunk holes. Length is measured from the top of the head.
b - length of the thread (at least)
l - length of bolt
d - the nominal diameter of the thread
k - head height
r - radius
dk - head diameter
m - groove width
a - length undercut
x - thread run
Makings:QBH
Steel: 4.8
Stainless: A2,A4
Plastic: -
Non Ferrous: -
Thread: 6g
Notes:
Table according to DIN 965:
| Thread d | M1,6 | M2 | M2,5 | M3 | (M3,5) | M4 | M5 | M6 | M8 | M10 | |||
| P | 0,35 | 0,4 | 0,45 | 0,5 | 0,8 | 0,7 | 0,8 | 1 | 1,25 | 1,5 | |||
| a | max. | 0,7 | 0,8 | 0,9 | 1 | 1,2 | 1,4 | 1,6 | 2 | 2,5 | 3 | ||
| b | min. | 15 | 16 | 18 | 19 | 20 | 22 | 25 | 28 | 34 | 40 | ||
| dk | nominal = max. | 3 | 3,8 | 4,7 | 5,6 | 6,5 | 7,5 | 9,2 | 11 | 14,5 | 18 | ||
| min. | 2,75 | 3,5 | 4,4 | 5,3 | 6,14 | 7,14 | 8,84 | 10,57 | 14,07 | 17,57 | |||
| k | max. | 0,96 | 1,2 | 1,5 | 1,65 | 1,93 | 2,2 | 2,5 | 3 | 4 | 5 | ||
| r | max. | 0,4 | 0,5 | 0,7 | 0,8 | 0,95 | 1 | 1,3 | 1,6 | 2 | 2,5 | ||
| x | max. | 0,9 | 1 | 1,1 | 1,25 | 1,5 | 1,75 | 2 | 2,5 | 3,2 | 3,8 | ||
| Cross recess | no. | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 4 | 4 | ||
| type H | m | approx. | 1,7 | 2,35 | 2,7 | 2,9 | 3,9 | 4,4 | 4,6 | 6,6 | 8,7 | 9,6 | |
| penetration depth | min. | 0,66 | 0,95 | 1,25 | 1,5 | 1,4 | 1,9 | 2,1 | 2,8 | 3,9 | 4,8 | ||
| max. | 0,91 | 1,25 | 1,55 | 1,8 | 1,9 | 2,4 | 2,6 | 3,3 | 4,4 | 5,3 | |||
| type Z | m | approx. | 1,8 | 2,2 | 2,5 | 2,8 | 3,7 | 4 | 4,4 | 6,1 | 8,5 | 9,4 | |
| penetration depth | min. | 0,89 | 0,92 | 1,22 | 1,48 | 1,34 | 1,6 | 2,05 | 2,46 | 3,86 | 4,77 | ||
| max. | 1,14 | 1,17 | 1,47 | 1,73 | 1,8 | 2,06 | 2,51 | 2,92 | 4,32 | 5,23 | |||
| l | Weight (7,85 kg/dm3) kg / 1000pcs | ||||||||||||
| nominal | min. | max. | |||||||||||
| 3 | 2,8 | 3,2 | 0,058 | 0,101 | 0,175 | ||||||||
| 4 | 3,75 | 4,25 | 0,069 | 0,119 | 0,206 | 0,291 | 0,434 | ||||||
| 5 | 4,75 | 5,25 | 0,081 | 0,137 | 0,236 | 0,335 | 0,494 | 0,676 | |||||
| 6 | 5,75 | 6,25 | 0,093 | 0,152 | 0,266 | 0,379 | 0,554 | 0,754 | 1,21 | ||||
| 8 | 7,7 | 8,3 | 0,116 | 0,193 | 0,326 | 0,467 | 0,673 | 0,9 | 1,45 | 2,19 | |||
| 10 | 9,7 | 10,3 | 0,139 | 0,231 | 0,386 | 0,555 | 0,792 | 1,06 | 1,7 | 2,54 | 5,03 | ||
| 12 | 11,65 | 12,35 | 0,162 | 0,268 | 0,446 | 0,643 | 0,911 | 1,22 | 1,95 | 2,89 | 5,67 | 9,59 | |
| (14) | 13,65 | 14,35 | 0,185 | 0,306 | 0,507 | 0,731 | 1,03 | 1,37 | 2,19 | 3,25 | 6,3 | 10,6 | |
| 16 | 15,65 | 16,35 | 0,208 | 0,343 | 0,567 | 0,82 | 1,15 | 1,53 | 2,44 | 3,61 | 6,94 | 11,6 | |
| (18) | 17,65 | 18,35 | 0,381 | 0,627 | 0,908 | 1,27 | 1,68 | 2,69 | 3,95 | 7,57 | 12,6 | ||
| 20 | 19,6 | 20,4 | 0,417 | 0,687 | 0,996 | 1,39 | 1,84 | 2,94 | 4,31 | 8,21 | 13,6 | ||
| (22) | 21,6 | 22,4 | 0,747 | 1,08 | 1,51 | 1,99 | 3,18 | 4,66 | 8,84 | 14,6 | |||
| 25 | 24,6 | 25,4 | 0,838 | 1,22 | 1,69 | 2,22 | 3,55 | 5,19 | 9,79 | 16,1 | |||
| (28) | 27,6 | 28,4 | 1,35 | 1,87 | 2,46 | 3,93 | 5,72 | 10,7 | 17,6 | ||||
| 30 | 29,6 | 30,4 | 1,44 | 1,99 | 2,61 | 4,16 | 6,08 | 11,7 | 18,6 | ||||
| 35 | 34,5 | 35,5 | 2,29 | 2,99 | 4,76 | 6,96 | 13 | 21,1 | |||||
| 40 | 39,5 | 40,5 | 3,36 | 5,39 | 7,84 | 14,6 | 23,6 | ||||||
| 45 | 44,5 | 45,5 | 6,02 | 8,73 | 16,2 | 26,1 | |||||||
| 50 | 49,5 | 50,5 | 6,65 | 9,61 | 17,8 | 28,6 | |||||||
| 55 | 54 | 56 | 19,4 | 31,1 | |||||||||
| 60 | 59 | 61 | 33,7 | ||||||||||
Process flow
Cold forging
Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨CNC➨ tapping ➨make heat treatment(if need) ➨ Finish ➨ Packing
Finish
PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON
PACKING
QBH BULK
20-25KG/CTN,36CTNS/PALLET
20-30KG/BAGS,36BAGS/PALLET
ONE TON/BOXES
50KG/ IRON DRUM,12 IRON DRUMS/PALLET
QBH SMALL PACKING
Packing in small boxes according to customer’s requirements
Packing in plastic bag according to customer’s requirements
QBH PALLET TYPE
SOLID WOOD FUMIGATION PALLET
EURO Pallet
THREE SPLINT PALLET
WOODEN BOX
The advantages of QBH
- QBH brand sales to the main quality assurance.
- Years of export trade management, excellent service, word-of-mouth guarantee.
- By working with TUV,escort for quality.
- Customization of non-standard parts can be made according to customer's requirements and drawings.
- For quality customers,we can provide a certain credit period.
FAQ
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