Sex screws, also known as Chicago screws, binding posts, barrel nuts, or screw binding posts, are two-component fastener systems consisting of an internally threaded post (barrel) and a mating machine screw. The barrel installs from one side of the assembly while the screw threads into it from the opposite side, creating a clean, finished appearance on both surfaces without exposed threads. This design allows for easy assembly, disassembly, and reusability, making them ideal for applications where frequent access or adjustment is required.
Key Features & Benefits
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Dual finished appearance: Clean, professional look on both sides of the assembly without exposed threads
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Low-profile design: Minimal protrusion compared to traditional nut and bolt assemblies
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Easy disassembly: Can be removed and reinstalled multiple times without damage
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Versatile sizing: Available in many lengths to accommodate different material thicknesses
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Protects internal threads: Barrel shields threads from damage during handling and installation
Available Types by Material & Head Style
| Type | Description | Typical Applications |
|---|---|---|
| Stainless Steel Sex Bolt | 18-8 (304) or 316 stainless steel construction; excellent corrosion resistance | Marine, outdoor, food service, medical equipment |
| Brass Sex Bolt | Polished, antique, or lacquered finishes; natural corrosion resistance and decorative appearance | Leather goods, decorative hardware, marine applications |
| Aluminum Sex Bolt | Lightweight; anodized finishes available in various colors | Lightweight assemblies, electronic enclosures, colored applications |
| Steel Sex Bolt | Zinc-plated, nickel-plated, or black oxide finishes; cost-effective general-purpose option | Furniture, industrial equipment, general indoor applications |
| Flat Head Binding Barrels & Screws | Low-profile, flush-mounting design; wide head distributes clamping force evenly | Panel mounting, cabinetry, tight-space applications |
| Hex Drive Binding Barrels & Screws | Hex socket drive for high torque application using Allen key | Applications requiring secure tightening, tamper-resistant configurations |
| One-Way Binding Barrels & Screws | Special drive design allows installation but prevents removal; security application | Permanent installations, anti-tamper assemblies |
| Tamper-Resistant Torx Binding Barrels & Screws | Torx drive with center pin; provides enhanced security against unauthorized removal | Public facilities, security-sensitive equipment |
Materials
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Stainless Steel – 18-8 (304), 316 (marine grade); excellent corrosion resistance
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Brass – Polished, antique, nickel-plated finishes; decorative and corrosion-resistant
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Aluminum – Anodized finishes in various colors; lightweight
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Steel – Zinc-plated, nickel-plated, black oxide; cost-effective
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Plastic / Nylon – Lightweight, non-conductive, corrosion-proof
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Titanium – High strength-to-weight ratio; aerospace and medical applications
Surface Finishes
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Plain (uncoated) – stainless steel, brass, aluminum
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Zinc Plating – clear or yellow; steel
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Nickel Plating – decorative, corrosion-resistant
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Black Oxide – matte black finish; steel
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Anodized – various colors; aluminum
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Gold Plating – 18K, 24K, or PVD coating; decorative applications
Common Applications
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Furniture Assembly: Table and desk legs, chair connections, bed frames, modular furniture
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Leather Goods & Fashion: Bag handles, belts, wallet closures, jacket hardware, harness systems
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Albums & Portfolios: Photo albums, scrapbooks, swatch books, menu covers, document binders
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Signage & Displays: Acrylic sign mounting, retail fixtures, menu boards, information panels
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Electronics Enclosures: Equipment rack panels, computer cases, control panel covers, junction boxes
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Automotive: Interior trim, panel assemblies
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Bookbinding: Sample books, catalogues, binding documents
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DIY & Crafts: Mixed media artwork, handmade journals, custom lamp construction
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