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410 Stainless Steel Concrete Screws

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Why Choose 304 Stainless Steel Castle Nuts?

Our 304 stainless steel castle nuts at AlbanyCountyFasteners.com, also known as 304 stainless slotted nuts, are hexagonal nuts with slots cut into the top, designed for use with a cotter pin to lock the nut in place, preventing rotation in high-vibration applications. Made from 304 stainless steel (18-8, with 18% chromium and 8% nickel), these nuts offer excellent corrosion resistance for indoor, outdoor, and mildly corrosive environments, along with durability and a polished finish. Their hexagonal shape allows easy wrench tightening. Available in imperial sizes like 1/4"-20, 5/16"-18, 3/8"-16 to 1"-8, they meet ASME B18.2.2, IFI tolerances, REACH, and RoHS standards, making them ideal for automotive, machinery, and outdoor projects requiring reliable locking and corrosion resistance.

  • Vibration Resistance: Slots enable cotter pin locking to prevent loosening.
  • Corrosion Resistance: 304 stainless steel excels in indoor and outdoor environments.
  • Durable Finish: Polished appearance enhances aesthetic appeal.
  • High Standards: Compliant with ASME B18.2.2 for reliable performance.

Applications for 304 Stainless Steel Castle Nuts

304 stainless slotted nuts are designed for secure, vibration-resistant fastening with bolts or studs, using a cotter pin to lock the nut in high-stress or mildly corrosive environments. Their versatility makes them suitable for:

  • Automotive and heavy machinery
  • Outdoor equipment and structures
  • Industrial and aerospace assemblies
  • Plumbing and HVAC systems

Frequently Asked Questions (FAQ)

What are 304 stainless steel castle nuts?

304 stainless steel castle nuts are hexagonal nuts with slots cut into the top, made from corrosion-resistant 304 stainless steel, designed for cotter pin locking to prevent rotation in high-vibration applications.

How do 304 stainless steel castle nuts differ from zinc plated steel castle nuts?

304 stainless steel castle nuts offer superior corrosion resistance for outdoor and mildly corrosive environments, while zinc plated steel castle nuts provide moderate corrosion resistance for sheltered settings.

Are 304 stainless steel castle nuts suitable for marine environments?

They provide excellent corrosion resistance for mildly corrosive settings, but for marine environments, 316 stainless steel or silicon bronze castle nuts are recommended for superior saltwater resistance.

How do I install 304 stainless steel castle nuts?

Thread the nut onto the bolt, tighten to align a slot with the bolt’s hole, insert a cotter pin through the slot and hole, and bend the pin’s ends to secure.

How do I choose the right size 304 stainless steel castle nut?

Select based on the bolt’s thread size, such as 1/4"-20, 3/8"-16, or 1/2"-13. Ensure the nut’s thread pitch matches the bolt and the slot aligns with the bolt’s hole for the cotter pin.