Crest Fixing Screw(Roofing Screw)

Crest Fixing Screw(Roofing Screw)

Short Description:

·Steel structure workshop and other medium-sized
construction project installation
·For engineering installation with high fastening requirements
·Thread knurling treatment, better chip removal, higher construction efficiency
·Vertical ribs design locking performance is good, not easy to loose

Product Detail

Product Tags

When you're operating in the toughest environments, you rely on high performance surface preparation and treatments to keep things running smoothly.

DaHe understand, so we make sure our coatings bring out the best in your components. Even under the most adverse conditions you can rely on product durability and total corrosive protection; the integrity of your components is maintained. Most importantly, there's no delay however pressing your needs – your orders are always delivered on time.
The excellent materials we use, the consistent high quality, responsiveness and attention to detail we provide, plus the ability to handle components of virtually all sizes, ensure both your ongoing satisfaction and simpler cost control.
DaHe fasteners have own standard colors. Our screws are powder coated for an attractive, durable finish. Custom colors are available by special order (minimum order amount required). Please contact your local sales representative to discuss custom work.

Our range of industrial coating and finishes includes:

 *Zinc Clear *PTFE(Xylan)
*Zinc Yellow * Zinc Phosphate
*Zinc Electroplating

Every coated or plated DaHe component is subjected to a rigorous quality process that includes:
Surface Cleaning            
Metal surfaces are cleaned by chemical or thermal degreasing process

Surface Blast
Metal surfaces are abrasive blast as required

Basecoat Application
All surfaces are coated with phosphate, sacrificial zinc base coat, primer, or ceramic metallic base-coat per the customer specification

Top-coat Application
All surfaces are sprayed with a Fluoropolymer® topcoat for a total dry film thickness of 1 to 1 ½ ml.

Thermal Cure
Parts are thermally cured in controlled ovens per manufacturer's procedures to ensure corrosion protection and adhesion 




Product Type

Crest Fixing Screw(Roofing Screw)


carbon steel

Drive Type

Hex Head

Product Length

2-3/8"  3-5/32"  4"  5"  6"  7"  8"  10"

Screw Diameter(mm)


Thread Length

Double Thread


EPDM Washers



Corrosion resistance class

C3  C4

Product Standard







Accept customization

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