Specifications
- Material: 18-8 stainless steel (304 family) unless noted; 410 stainless self drilling screws; 316 stainless deck screws
- Threads: USS coarse (UNC) and SAE fine (UNF)
- Sizes: #0-80 machine screws up to 1-1/2" bolts
- Type 316 stainless available, please contact us
The Nutty Company carries a full line of Stainless Steel Fasteners
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Important information on Stainless Steel Galling... Click here,
Common Uses
- Marine, dock and coastal work
- Outdoor structures, decks and fences
- Food, beverage and pharmaceutical equipment
- Water and wastewater treatment
- Chemical plants and washdown areas
FAQ
What is 18-8 stainless steel?
18-8 is the group of austenitic stainless steels (Types 302, 303, 304 and 305) with about 18% chromium and 8% nickel. It resists rust outdoors, in wet areas and in food and process plants, and it is the standard stainless steel for fasteners.
Should I use 18-8 or 316 stainless?
18-8 is fine for most outdoor and wet jobs. 316 stainless adds molybdenum for better resistance to salt water, chlorides and many chemicals, so it is the better choice for boats, docks, pools and coastal sites. Contact us for 316 stainless.
How strong are 18-8 stainless bolts?
18-8 stainless bolts to ASTM F593 have a minimum tensile strength of about 100,000 psi in 1/4" to 5/8" and about 85,000 psi in 3/4" to 1-1/2". That is stronger than Grade 2 steel but not as strong as Grade 5 or Grade 8.
How do I stop stainless threads from galling?
Stainless threads can seize (gall) when tightened fast or under heavy load. Put anti-seize on the threads, tighten slowly at low speed, keep the threads clean and don't overtighten.
Are stainless steel fasteners magnetic?
18-8 stainless is non-magnetic when annealed, but cold forming the head and threads can make it slightly magnetic. This does not change its corrosion resistance.
Related: Stainless Metric Fasteners | Stainless Fastener Assortments | Anti-Seize | Stainless Anchors | Stainless Eye Bolts
Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.