Payment & Shipping Terms:
|Drilling Point:||#2||Hardness:||450 HV|
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 .
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
|Material||Carbon steel||Hardness||35 HRC|
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|
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 .