Bulk 1"-14 UNS Hex Cap Screws (Special Fine Thread, A2 18-8 Stainless Steel)

Corrosion-Resistant Stainless Steel Screws for Industrial & Heavy-Duty Applications

Upgrade your fastening solutions with 1"-14 UNS Hex Cap Screws, crafted from high-quality A2 (18-8) stainless steel. The special-series UNS fine thread provides improved engagement and holding strength—ideal for industrial, heavy-equipment, marine, and outdoor environments.

Note – PT = Partial Thread

Key Specifications

• Material: A2 (18-8) Stainless Steel – Excellent corrosion resistance
• Tensile Strength: High durability suitable for demanding applications
• Thread Size: 1"-14 UNS (Special Fine Thread)
• Finish: Plain (Natural Stainless Steel)
• Corrosion Resistance: Superior performance in moisture, saltwater, and outdoor conditions
• Head Style: Hex Cap for strong, secure installation
• Compliance: Meets A2-70 stainless steel standards
• RoHS Compliant: Environmentally safe, lead-free, and non-toxic

Understanding the 1"-14 UNS Thread

The 1"-14 UNS thread is not a common consumer fastener size — it belongs to the Unified National Special (UNS) category. UNS threads use a pitch and diameter combination that does not appear in standard UNC or UNF series, making them essential for specialty or high-load applications.

• Nominal Diameter: 1 inch (Major Diameter = 1.000")
• Threads Per Inch: 14 TPI
• Thread Type: UNS – a special, non-standard thread series
• Thread Direction: Right-hand (tightens clockwise)

Where It's Used:

• Heavy machinery & industrial equipment
• Automotive spindles and specialty assemblies
• Machine tools, presses, and custom builds
• Large-diameter fasteners requiring a unique pitch

In simple terms, 1"-14 UNS is a robust, fine-threaded 1-inch fastener size designed for demanding engineering tasks where a standard UNC or UNF thread is not suitable.

Why Choose A2 (18-8) Stainless Steel?

A2 stainless steel—also known as 18-8—is the most commonly used stainless alloy due to its balance of strength and corrosion resistance. Benefits include:

• Superior Corrosion Resistance: Ideal for outdoor, marine, and high-humidity environments.
• Fine Thread for Precision: UNS threading delivers high holding power in vibration-prone equipment.
• Rust-Proof & Weather-Resistant: Withstands exposure to moisture, chemicals, and oxidation.

Industries & Applications

• Marine & Coastal Projects: Perfect for boat building, docks, offshore structures, and marine hardware.
• Heavy Machinery: Common in high-strength industrial fastening and equipment rebuilds.
• Construction & Infrastructure: Excellent for stainless structural connections.
• Automotive & Diesel Engines: Used where vibration resistance and corrosion protection are critical.
• Food & Beverage Processing: Corrosion-resistant fasteners for sanitary environments.

Installation Tips

• Use the Correct Wrench Size: Ensures secure tightening and prevents fastener damage.
• Apply Anti-Seize Lubricant: Essential for stainless steel to prevent galling.
• Verify Proper Torque: Follow torque guidelines for maximum holding strength.

Bulk Purchasing Advantages

• Cost Savings: Bulk orders reduce per-unit cost—ideal for large projects and repeat use.
• Consistent Product Quality: All fasteners pulled from the same production lot.
• Reliable Supply: Stay on schedule with inventory ready to ship.
• Designed for Professionals: Perfect for contractors, manufacturers, industrial suppliers, and rebuild shops.

Order in Bulk & Save

Build with confidence using Bulk 1"-14 UNS A2 (18-8) Stainless Steel Hex Cap Screws. These premium fine-thread stainless screws are ideal for marine, industrial, and high-precision applications. Order now for bulk discounts, fast shipping, and top-rated customer support.

✔️ Excellent for marine, industrial, and heavy-duty applications

✔️ Rust-resistant A2 (18-8) stainless steel for long-term durability

✔️ UNS fine-thread design for precision and vibration resistance