304 Stainless Steel Phillips Hex Combination Screws M3–M8 GB9074

304 Stainless Steel Phillips Hex Combination Screws – GB9074.13 Standard

Upgrade your metalworking and DIY projects with these precision-engineered 304 stainless steel combination screws. Conforming to the GB9074.13 standard, each fastener features a dual-drive design — a Phillips (cross-head) top combined with an external hex flange — giving you maximum installation flexibility with either a screwdriver or a wrench/socket. Available in popular metric sizes including M3, M4, M5, M6, and M8, these screws are an essential addition to any toolkit.

Made in Mainland China.

Why Choose These Combination Screws?

• Premium 304 Stainless Steel — Excellent corrosion and oxidation resistance, ideal for indoor and moderate outdoor applications.
• Dual Drive Design — Phillips head slot plus external hex head; use the driving method that suits your workspace and torque requirements.
• Three-Piece Combination — Each assembly integrates a bolt, flat washer, and spring washer in one unit for faster, more consistent fastening.
• GB9074.13 Certified — Manufactured to Chinese national standard GB9074.13 for reliable dimensional accuracy and mechanical performance.
• CE Certified — Meets European compliance requirements, suitable for a wide range of professional and DIY applications.
• Multiple Size Options — Available in M3, M4, M5, M6, and M8 to suit a broad variety of assembly needs.
• Pack Quantities of 50–99 pcs — Ideal for projects requiring consistent, bulk-quantity fastening.

Product Specifications

Ideal Uses

• Machinery and equipment assembly
• Electronics enclosures and panels
• Furniture and cabinetry metalwork
• Automotive and mechanical repairs
• General DIY construction and fabrication

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Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What is a combination screw and how does the GB9074.13 three-piece design work?

A: A GB9074.13 combination screw is a fastener that permanently pre-assembles a bolt, a flat washer, and a spring (lock) washer into a single unit. This three-in-one design saves assembly time, prevents lost washers, and ensures consistent clamping force every time — ideal for high-volume manufacturing or repetitive DIY tasks.

Q: Are these screws suitable for outdoor or humid environments?

A: These screws are made from 304 stainless steel, which offers strong resistance to rust and corrosion in standard indoor environments and light outdoor conditions. For highly corrosive or marine environments, 316 stainless steel may be more appropriate.

Q: What tools do I need to install these Phillips hex combination screws?

A: Thanks to the dual-drive design, you can use a standard Phillips screwdriver or a #2 Phillips bit, OR an appropriately sized hex socket/wrench on the external hex head. This versatility makes installation easier in tight spaces or when high torque is required.

Q: Can I order a custom quantity or size not listed?

A: Yes — these screws are available with customization options. Please contact us with your specific size, quantity, or packaging requirements and we will do our best to accommodate your order.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.