Industrial Fasteners
The right fastener.
The exact spec.
Bolts, nuts, washers, screws, rivets, and pins in stainless steel and specialty materials — with published specifications, transparent volume pricing, and no minimum order on in-stock items.
- Free US shipping
- Every order, no minimum
- Ships in 1–2 days
- On in-stock items
- 30-day returns
- Unused, original packaging
- Volume pricing
- Published on every listing
Catalog
Shop by category
594+ products across 5 families, each filterable down to a single size.
Specifications
Every spec published
before you buy.
No guessing from a photo and a title. Each listing carries the full technical record, so you can check the part against your drawing or the one you are replacing.
- Material and grade (18-8 / A2-70, 316 / A4-70, 410, brass, bronze)
- Finish — plain, zinc, yellow zinc, hot-dip galvanized, black oxide
- Thread size and pitch, in imperial and metric
- Head style, drive type, and length
- Package quantity and per-piece weight
Live price ladder
#14 Hex Washer Type AB Stainless Steel 18-8
1/2"
| Pack size | Per piece | Savings |
|---|---|---|
| 5 pcs | $2.45/ea | — |
| 10 pcs | $1.35/ea | −45% |
| 25 pcs | $0.66/ea | −73% |
| 100 pcs | $0.30/ea | −88% |
| 250 pcs | $0.24/ea | −90% |
90% lower per piece across these tiers
View productPricing
Volume pricing,
shown up front.
The whole price ladder sits on the product page — the per-piece price at every pack size, before you add anything to the cart. No account required to see it, no quote to wait on, and no hidden fees at checkout.
No minimum on in-stock items
Buy a pack of five or a case of five thousand. Bulk-only items need a $500 cart subtotal.
Automatic discounts
Tiers apply at the cart — nothing to ask for.
Bulk-Only pricing
Production packs at our wholesale rate, no per-pack markup.
Free US shipping
Standard shipping is free on every US order.
In stock
Featured products
Popular fasteners ready to ship within 1–2 business days.
Why Fastenio
Built for people who need the part, not a catalog.
Exact Sizes
Shop by diameter, thread pitch, and length
Corrosion-Resistant
18-8 & 316 stainless, brass, and bronze
Small Packs
Buy one pack or one thousand
Volume Pricing
Per-unit price drops at higher quantities
Technical Specs
Material, grade, thread, and dimensional data
Fast Shipping
In-stock orders ship within 1–2 business days
Ordering
How ordering works.
Find the exact part
Filter the catalog by diameter, thread pitch, length, head style, drive, and material until one SKU is left.
Verify the specification
Every listing publishes material, grade, finish, thread, and drive type so you can check the part against your drawing before you buy.
Choose your quantity
The full price ladder is on the product page. See the per-piece price at every pack size before you add to cart.
Check out securely
Payment is processed by Stripe over an encrypted connection. Free US shipping, and in-stock orders ship within 1–2 business days.
Who you are buying from
A real business standing behind every order.
Fastenio is a US fastener supplier shipping from New York. Here is exactly who you are buying from and what is protected when you order.
Secure checkout by Stripe
Payments are processed by Stripe over an encrypted connection. Your card details are never stored on our servers.
30-day returns
Unused items in original packaging can be returned within 30 days of delivery. Return policy.
Free US shipping
Free standard shipping on every US order, with no minimum order value. Shipping details.
Published specifications
Every listing publishes material, grade, finish, thread size, and drive type so you can verify the part before you buy.
Transparent volume pricing
The full price ladder is shown on the product page before checkout — the per-piece price at every pack size, with no hidden fees.
Talk to a person
Reach us by phone, email, or live chat during business hours — a real person answers.
Business information
- Registered address
- 63 Acorn Lane, Levittown, NY 11756
- info@fastenio.com
- Phone
- +1 (347) 256-6338
Read our Privacy Policy and Terms of Service.
Support
Frequently asked questions
Have another question? Contact us or browse our technical specs and buying guides.
- Do I have to buy in bulk?
- Most products are available in small packs starting at 5 pieces, with automatic volume discounts as quantity increases. Some products are marked Bulk-Only — those ship in single production packs at bulk pricing and may become available in smaller packs as our inventory expands. Look for the Bulk-Only badge on the catalog and product pages.
- What material are your fasteners?
- Our catalog is primarily 18-8 (A2-70) and 316 (A4-70) stainless steel, plus 410 stainless, brass, silicon bronze, low-carbon steel, and aluminum on select items. Each product listing shows the exact material, grade, and finish.
- How do I find the right size?
- Use the catalog filters to search by diameter, thread pitch, length, and head style. Each product page lists full dimensional and technical specifications.
- Do you offer volume pricing?
- Yes. Every product page shows tiered pricing. The per-unit cost decreases automatically as you increase the quantity.
- What is your return policy?
- We accept returns within 30 days of delivery for unused items in original packaging. See our returns page for full details.
Trusted by contractors, maintenance teams,
and procurement buyers.
Whether you need a small pack for a weekend repair or case quantities for a commercial project, Fastenio stocks the industrial fasteners you need — exact sizes, published specs, and automatic volume pricing.