Tangshan Guofeng Screws Co., Ltd.

Thread Rolling Dies for Self Tapping Screws, Wood Screws, ChipBoard Screws, Dry Wall Screws, Y-type, A-Type, B-Type,and can manufacture upto 160 mm Thread Length we can also manufacture dies according the customer specification. For 1 Set = 1 Kg.

Our screws include: cross flat head screw, self tapping screw, self drilling screw, wood screw, drywall screw, hexagon screw, hex socket cap screw, mechanical screw, etc. All kinds of specifications and types can be customized according to the drawings, to meet various standard requests from different countries. Good equipment, consummate craft and strict management enable the quality of the products and service standard to reach the level of international market.

Chipboard ScrewsHeat Treated Case Hardened to Prevent Snapping 40 Degree Thread Angle, 25 Degree Point Angle Zinc, Yellow Zinc, Brass or Black Oxide available PATTA self-drilling Chipboard screws have a coarse thread and fine shank to provide maximum grip and minimum strip out into chipboard, MDF board and soft timbers. The head has ribs molded around the countersunk head which help remove the chipboard particles when countersinking. How to Use 1. Measure the total thickness of the materials to be fastened. 2. Choose a screw long enough to provide approx. 20mm of thread embedment into the chipboard or wood being fastened to. 3. Fit a #2 Phillips drive bit to a power screwdriver set to low speed, approx. 1000rpm. normal size M3.0 M3.5 M4.0 M4.5 M5.0 M6.0 thread diameter min. 2.8 3.3 3.75 4.25 4.7 5.7 max. 3 3.5 4 4.5 5 6 head diameter min.. 5.6 6.6 7.5 8.5 9.5 11.5 max. 6 7 8 9 10 12 pitch 1.35 1.6 1.8 2 2.2 2.6 head height max. 1.9 2.1 2.5 2.7 3 3.6 shank max. 1.6 1.8 2 2.2 2.5 3 recess no. 1 2 2 2 2 3 recess depth min. 1.6 1.6 2.05 2.6 3 3 max. 2 2.1 2.5 3.1 3.45 3.45

Chipboard screws Pozi double countersunk zinc plated waxed. Flat, oval, pan head, torx, head ribbs 2.5 x 10-6.0 x 160