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Countersunk Self-Tapping Screws with Cutting Tail

Product Details

SIZE : ST5 TO ST9, LENGHT -35 TO 55MM

HEAD TYPE : Countersunk Serrated Head

MATERIAL : Carbon Steel, Stainless Steel

TAIL TYPE : Cut Tail

FINISH : Plain

Packaging & Shipping

PACKAGING : Bulk Pack | Small Boxed

PRICE TERMS : Fob/CFR/CIF/DDP/DAP

Description Specification Related Products Form

Description

Product Description:

Countersunk Torx-Combination Drive Coarse Thread Full-Thread Self-Tapping Screws with Cutting Tail are high-efficiency fasteners designed for connections between wood, engineered wood, light steel keels, and composite panels, widely used in furniture manufacturing, renovation projects, and wood structure reinforcement. Manufactured from high-quality high-strength carbon steel (1022/10B21) or stainless steel (304/410) via precision cold forging, heat treatment, and thread rolling, they can be zinc-plated, colored zinc, Dacromet, or stainless steel finished for corrosion resistance and weatherability. The screws feature a 90° countersunk head with Torx-combination drive, compatible with Torx screwdrivers and power bits; the shank has coarse full threads with a cutting tail groove, enabling direct driving into wood without pre-drilling. The cutting groove severs wood fibers to prevent hardwood splitting. The countersunk head sinks flush with the workpiece after installation for a smooth finish; coarse threads provide secure engagement and high pull-out resistance, making them composite fastening solutions balancing high cutting efficiency, anti-splitting, anti-slip performance, and versatility.

Core Advantages:

1.Core Anti-Splitting Design, Zero Installation Waste: Cut-tail tip cuts fibers, reducing torque, eliminating hardwood/thick board splitting, reducing rework

2.Stainless Steel for All-Scenario Durability: 304/316 stainless steel is rust-free in humid/outdoor/coastal areas, lasting 3x longer than carbon steel, cutting maintenance costs

Countersunk Phillips Drive Serrated Self-Tapping Screws with Cut Tail

3.Flat Countersunk Head for Finishing Projects: Smooth post-installation surface, ideal for painting/veneering, perfect for furniture/renovation needing a neat look

4.Torx-Combination Drive for Anti-Slip, High Torque: The Torx (star) combination drive design offers large contact area, high torque transmission efficiency, and reduced slipping, suitable for high-load, high-stress applications while minimizing bit wear during installation

5.Cost-Effective Universal Model, High Efficiency: Combines durability and affordability, significantly cheaper than Torx stainless screws, great value for general use

6.Full Threads for Strong Holding Power: Tightly grips wood for strong hold and stability, great for load-bearing, long-term use

7.Safe and Eco-Friendly for Food-Contact Scenarios: 304/316 stainless steel meets food standards, no harmful substances, ideal for kitchens/baths

Common Applications:

1.Furniture Manufacturing: Assembly/fixing of solid wood furniture, cabinets, tables, chairs, and bed frames

2.Indoor and Outdoor Renovation: Install ceilings, partitions, veneers, flooring, and door/window frames

3.Wood Structures and Outdoor Woodwork: Install wooden houses, boardwalks, decks, anti-corrosion wood projects, landscapes

4.Bathroom and Kitchen Renovation: Install bathroom/kitchen cabinets, shelves, and bathroom hardware

5.DIY and Maintenance: Home DIY, furniture repair, woodworking, small projects

6.Food-Contact Scenarios: Fix kitchen shelves, dish racks, and food equipment wood parts

FAQ:

Q1: What is the function of the cutting tail groove?

A1: The cutting tail groove severs wood fibers as the screw is driven in, preventing the wood from splitting or chipping, especially in hardwood, thick boards, or end-grain lumber. It reduces installation waste and ensures a clean finish.

Q2: Why use a Torx-combination drive instead of Phillips drive?

A2: Torx-combination drives have larger contact area with the bit, reducing cam-out (slipping) and wear on both the screw and the bit. They transmit higher torque, making them more durable and reliable for heavy-load applications.

Q3: What is the difference between coarse thread and fine thread wood screws?

A3: Coarse threads have wider spacing and deeper engagement with wood, offering higher pull-out resistance and better performance in hardwood or end-grain lumber. Fine threads are better suited for softwood or metal-to-wood connections.