
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 diameter | 4.8 |
Thread length | 42 |
Head height | 5.5 |
Head diameter | 10 |
Head drive | Square / robertson |
Pitch | 1.59 |
Full length | 63 |
Note : all dimensions are millimeters
Carbon steel robertson square screw is quenched and tempered to ensure enough strength during installation and improve efficiency .
Material code | 1018 |
Tensile strengh | 539 |
Case hardness | HV500 |
Core hardness | HV400 |
Density | 7.85 |
Yiled strength | 495 |
Ductility | 33.5 |
Property class | 6.8 |
Finishing for Robertson square screw
Finishing | Blue zinc |
Standard | RoHS ( 2002/95-EC ) |
Thickness | 3 um |
Color | Silver |
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 .
VEDALI HARDWARE CO., LTD
With many years reputation in hardware filed , VEDALI HARDWARE CO., LTD has entered hardware filed and gained much development in these years , we have over 100 employees and 20 engineers on researching and development , and several branches that are specialized in different hardware for vast demands .
Our product range covers Fasteners ( Screws , Bolts , Nuts , Rivets , Washers , Pins ) , Stamping Parts , Machined Parts , Plastic Injection Molded Parts Which are made of or from different materials for every field in industry , Agriculture and Service . We own advanced process machines and experienced skilled workers to ensure products are manufactured in high quality . We are able to proceed special designs for new projects and provide good solutions to difficult problems during operations , and OEM services are available for us as well .
We carry out ISO management system for our normal managements and put more good management styles based on hommization , efficiency , technicalization according to our actual situations . Our products are sold to the most countries or areas in the world and serve many fields , welcome you to send enquiries to us and looking forward to cooperation .