1/4 Hex Washer Head Self Drilling Screws for Roofing Sheet Color
Dacromet Fasteners
Hex washer head roofing screws are made of carbon steel with heat
treatment , and hardness ups to HRC 35 , self tapping threads and
sharp point for quick drilling roofing .
Washer head design make roofing screws are more easy to be secured
and protect threads of screws to be rusted easily by water .
Roofing screws are plated in dacromet and meet RoHS requests on
enviromental protection . Some times , roofing screws can be added
a EPDM washer under head that diameter is bigger than head of
roofing screws for more good proection .
Basic Features
1 . Quick drilling performance
2 . Harden material with good ductility
3 . Recyle use is workable
4 . Longer service with many years .
5 . Not easy to be rusted .
General Technical Data
 | Thread | M5 |
| Head diameter | 9.8 |
| Head height | 5.0 |
| Length | 30 |
| Pitch | |
| Material | Carbon steel | Hardness | 35 HRC |
| Finish | Dacromet | Torque | 8.5 |
Different specifications for different securing thickness when self
tapping roofing screws drilling roofing sheet metal .
| Size | EPDM OD | metal fastening range |
| 8-18 x 1/2 | 10 | 0.035-0.1 |
| 8-18 x 5/8 | 10 | 0.035-0.1 |
| 8-18 x 3/4 | 10 | 0.035-0.1 |
| 8-18 x 1 | 10 | 0.035-0.1 |
| 8-18 x 1-1/4 | 10 | 0.035-0.1 |
| 8-18 x 1-1/2 | 10 | 0.035-0.1 |
| 8-18 x 2 | 10 | 0.035-0.1 |
| 10-16 x 1/2 | 12.7 | 0.035-0.176 |
| 10-16 x 5/8 | 12.7 | 0.035-0.176 |
| 10-16 x 3/4 | 12.7 | 0.035-0.176 |
| 10-16 x 1 | 12.7 | 0.035-0.176 |
| 10-16 x 1-1/4 | 12.7 | 0.035-0.176 |
| 10-16 x 1-1/2 | 12.7 | 0.035-0.176 |
| 10-16 x 2 | 12.7 | 0.035-0.176 |
| 10-16 x 3 | 12.7 | 0.035-0.176 |
RFQ
Q.How long I can get samples for approval before placing order ?
A. Normally one week for custom screws , and we can deliver samples
within 24 hours for standard screws or stock once received your
request .
Q How many days dispatch goods after placed orders ?
A Generally , one week for popular screws under 2 tons , final
delivery is subject to requests on screws , packing and or other
deamnds from you .
Q.What are your popular payement menthods ?
A. T/T is our prior choose for all , of course , we are also accept
L/C , Westunion , paypall .
Q. What products you produce ?
A. We manufacture various hardwares like fasteners screws , nuts ,
bolts , pins , rivets and custom metal stamping parts and plastic
injeciton molding products .
