Skip to product information
1 of 6

Vichok Hardware

UNC/UNF Screw 304/316 Stainless Steel Imperial Round Head Mushroom Head Hex Socket Coarse/Fine Thread Screw

UNC/UNF Screw 304/316 Stainless Steel Imperial Round Head Mushroom Head Hex Socket Coarse/Fine Thread Screw

Regular price $6.84 USD
Regular price $6.84 USD Sale price $6.84 USD
Sale Sold out
Color classification

Product Overview

 
Premium-grade imperial hex socket screws, meticulously crafted from high-quality 304/316 stainless steel to deliver exceptional corrosion resistance, durability, and precision. Available in both UNC (coarse thread) and UNF (fine thread) standards, these screws feature a dual round head and mushroom head design—engineered to meet the diverse fastening needs of industrial, commercial, and DIY projects. Designed for imperial-sized equipment, they combine user-friendly installation with long-lasting performance, making them a reliable choice for professionals and hobbyists alike.
 

Key Specifications

 
  • Material: 304/316 Stainless Steel – 304 for general corrosion resistance (ideal for indoor/outdoor use); 316 for enhanced resistance to saltwater, chemicals, and harsh environments (perfect for marine, industrial, or wet applications).
  • Thread Standard: UNC (Coarse Thread) – for quick, efficient installation; UNF (Fine Thread) – for tighter, anti-loosening fit in high-vibration scenarios (e.g., machinery, automotive parts).
  • Drive Type: Hex Socket (Inner Hexagon) – precision-machined with tight tolerances to ensure a secure, slip-free grip during installation, eliminating stripping or cross-threading.
  • Head Design: Round Head & Mushroom Head – both offer a smooth, low-profile finish that avoids protrusions, preventing interference with mechanical operation and adding a clean, aesthetic look.
  • Standard: Strictly Imperial – perfectly compatible with all imperial-sized nuts, washers, and equipment, eliminating sizing mismatches.
 

Core Advantages

 
  • Superior Corrosion Resistance: 304/316 stainless steel construction prevents rust, oxidation, and corrosion, ensuring longevity in indoor, outdoor, wet, or chemical-exposed environments.
  • Dual Thread Versatility: Choose UNC for fast assembly (ideal for general use) or UNF for maximum stability in high-vibration applications (e.g., automotive, machinery), adapting to your specific project needs.
  • Effortless Installation: Hex socket drive works seamlessly with standard hex keys (Allen keys), providing a secure grip that saves time and reduces installation errors—perfect for both professionals and DIY enthusiasts.
  • Low-Profile, Functional Head Design: Round and mushroom heads offer a sleek finish, avoid mechanical interference, and distribute pressure evenly across the fastened surface, preventing component damage.
  • High-Quality Craftsmanship: Strict quality control ensures consistent dimensions, uniform thread patterns, and strong load-bearing capacity, guaranteeing reliable performance in demanding applications.
 

Ideal Applications 

 
  • Automotive repair and assembly (imperial-sized engines, body parts, and components).
  • Industrial machinery and equipment (fastening gears, pulleys, and structural parts, especially high-vibration areas).
  • Construction projects (imperial-sized fixtures, brackets, and outdoor installations).
  • Marine and coastal applications (316 stainless steel option for saltwater resistance).
  • DIY hobbies and home improvement (furniture, decor, and custom projects requiring imperial fasteners).
  • Professional use by engineers, technicians, and tradespeople (reliable, versatile, and compliant with imperial standards).
 

Installation & Maintenance Notes 

 
  • Use a matching-size hex key (Allen key) to avoid damaging the hex socket drive or stripping the screw.
  • Select the appropriate thread type: UNC for general, quick installation; UNF for applications prone to vibration (e.g., machinery, automotive parts) for a tighter, anti-loosening fit.
  • For 304 stainless steel: Avoid prolonged exposure to strong chemicals (e.g., bleach, industrial cleaners) to maintain corrosion resistance.
  • For 316 stainless steel: Suitable for marine/saltwater environments, but rinse with fresh water periodically to remove salt buildup and extend lifespan.
  • Ensure the screw size matches the component hole and nut to maximize load-bearing capacity and stability.
View full details