Hexagon socket oil plug screw

O processo de encabeçamento a frio é um dos novos processos para a maquinagem sob pressão com menos ou nenhum corte
metal. É um método de processamento que utiliza a deformação plástica do metal sob a ação de
forças externas e, com a ajuda de moldes, redistribui e transfere o volume de metal para formar
as peças ou os espaços em branco necessários. O processo de encabeçamento a frio é o mais adequado para a produção de
elementos de fixação, tais como cavilhas, parafusos, porcas, rebites, cavilhas, etc.

A Hexagon socket oil plug screw, commonly known as a hex plug, Allen plug, or socket head plug, is a type of threaded fastener used to seal or close off a threaded opening, typically in machinery, hydraulic systems, or plumbing applications.

Key Characteristics:

1. Hexagonal Socket Drive:

   • Has a six-sided internal recess for secure engagement with an Allen wrench or hex driver.

   • Allows for high torque application without cam-out (unlike Phillips or slotted screws).

2. Threaded Body:

   • Made with external threads (metric, UNC, UNF, NPT, BSP, etc.) to match the threaded port.

   • Some have tapered threads (NPT/NPTF) for a pressure-tight seal, while others use straight threads with a sealing washer or O-ring.

3. Materials & Finishes:

   • Common materials: Carbon steel, stainless steel, brass, aluminum, or nylon.

   • Coatings: Zinc plating, black oxide, anodizing, or PTFE coating for corrosion resistance.

4. Sealing Mechanism:

   • May include an integrated O-ring, copper washer, or bonded seal for leak-proofing.

   • Some rely on thread sealant (Teflon tape, Loctite) for additional sealing.

   • Hexagon socket oil plug screw

5. Head Styles:

   • Flush head (countersunk for a smooth surface).

   • Raised head (protrudes slightly for easier access).

   • Vented head (with a small hole for pressure equalization).

Aplicações comuns:

• Sealing hydraulic/pneumatic ports, gearboxes, engine blocks, and fluid reservoirs.

• Acting as drain/fill plugs in automotive and industrial systems.

• Providing access points for maintenance in machinery.

Variants:

• O-Ring Hex Plug (with built-in rubber or Viton seal).

• Metric/Inch Hex Plug (thread size variations).

• Magnetic Hex Plug (captures metal debris in oil systems).