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(6Set) 5/16-18 x 3-1/2" Complete Set Hex Head Screw Bolts,Nuts,Fender Flat washers,Split Lock Washers,Fully Threaded, Stainless Steel 18-8（304）, Bright Finish.
✅ In stock
F
Grade
Analysis Confidence
100%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 19, 2026 11:15 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price sits right around what this item typically fetches.
- 🏷️The retail sticker price has been slashed by 47% — a steep markdown from the official listing.
- 📉Better-priced windows have occurred before, though not frequently — today's price is reasonably competitive.
- 📈Prices have been moving higher lately — waiting risks paying more if that momentum continues.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
1/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
Katuna Fastener
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓High-quality material: Our hex bolt sets are made of high-grade steel with excellent durability and corrosion resistance, ensuring long-lasting use in various applications.
✓Versatile use: Our hex bolt sets are suitable for various applications, including automotive, machinery, construction, and more.
✓Precise threading: Each hex bolt in our set is precisely threaded, ensuring a snug fit and providing a secure hold for the components they fasten.These heavy duty hex nuts and bolts with full deep thread will provide a stronger and quicker torque than ordinary screws, which will make force evenly, not easy to slip and ensure long-lasting tightening force, you can use it with confidence.
✓Hex bolts generally require flat & lock washers to evenly distribute the pressure from the head and the nut. The combinations we provide save your time and money to buy washers and nuts seperately.
✓Package includes: 6Pcs of 5/16-18 x 3-1/2 bolts,5/16-18 hex nuts , 5/16-18 fenderFlat washer & 5/16-18 splitLock washers，Screw them together and put them in a plastic bag.
⚙️ Specifications
Size
(6Set)5/16-18 x 3-1/2"
Color
Bright
Material
Stainless Steel
Brand
KATUNA
Item dimensions L x W x H
5.1 x 4.3 x 0.74 inches
Fastener Type
Hexagon Bo
Head Style
Hex
Finish Type
Bright Finish
Item Diameter
0.31 inches
Number of Pieces
200
Number of Items
500
