Flat Head Square Drive Robertson Screw For Wood Galvanized Steel Fastener

Brand Name:VDL
Certification:ISO 9001
Model Number:CS4545
Minimum Order Quantity:Negotiation
Delivery Time:30 days
Payment Terms:L/C, T/T, Western Union , Paypal
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Location: Dongguan Guangdong China
Address: NO.12 HUANGHE RD ,HUANGJINAG , DONGGUAN, GD,CHINA
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Flat Head Square Drive Robertson Screw For Wood Galvanized Steel Fastener


Square drive or Robertson@ drive screw with flat head sharp point and wood threads for application on wooden parts .


Robertson square screws has a 90 degree or 120 degree head and blank angle is up to 45 degree for cutting material as quickly as possible .



Thread diameter4.8
Thread length42
Head height5.5
Head diameter10
Head driveSquare / robertson
Pitch1.59
Full length63

Note : all dimensions are millimeters


Carbon steel robertson square screw is quenched and tempered to ensure enough strength during installation and improve efficiency .


Material code1018
Tensile strengh539
Case hardnessHV500
Core hardnessHV400
Density7.85
Yiled strength495
Ductility33.5
Property class6.8

Finishing for Robertson square screw


FinishingBlue zinc
StandardRoHS ( 2002/95-EC )
Thickness3 um
ColorSilver

Features for Robertson square screw


1 . Perfect flexibility and not easy to be deformed


2 . High tensile strength with fast cutting performance


3 . Effective drilling


4 . Harden material with strict dimensions


5 . Over threaded length for locking


Application


Robertson square screws are often used to secure wooden pieces or plastic parts that in industry .


RFQs


Q What material for robertson square screw ?

A Carbon steel and stainless steel


Q What finishing for Robertson square screw ?

A Popular finishing including zinc ,nickel ,tin ,chrome ,oxide and paint


Q How to ensure Robertson square screws are not broken or deformed during installation ?

A All Robertson square screws are quenched and tempered , the hardness is up to HRC 50, this is easy to be capable of request from wooden parts .


China Flat Head Square Drive Robertson Screw For Wood Galvanized Steel Fastener supplier

Flat Head Square Drive Robertson Screw For Wood Galvanized Steel Fastener

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