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5/16-18 x 1-1/2" Carriage Bolt Kit, Stainless Steel 304 Carriage Bolts Screws with Hex Nuts & Flat Washers, Round Head Square Neck, Full Thread, Black Finish, 8 Sets
✅ In stock
⭐ Lowest price we've tracked
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 19, 2026 3:41 AM · 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 71% — a steep markdown from the official listing.
- 📉Our analysis places this at the most competitive price point we have ever tracked for this product — an exceptional moment to buy.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
1.14/28
Recent Value
0/22
Market Standing
1.67/20
Deal Strength
20/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
OUSCHR
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Thread Diameter: 5/16 Inch; Thread Pitch: 18 TPI; Screw Length: 1-1/2 Inch; Head Diameter: 0.69 Inch; Head Height: 0.16 Inch.
✓Package Includes: 8 PCS 5/16-18 x 1-1/2" Carriage Bolts come with 8 PCS 5/16-18 Hex Nuts and 8 PCS 5/16" ID Flat Washers.
✓Material: Made of 304 stainless steel which has great strength, good stability and corrosion resistance performance, very reliable.
✓Feature: Carriage bolts have a dome shaped head and a square neck generally requiring a hex nut and flat washer. The dome shaped head design without a cross slot or hex can be anti-theft. The square neck makes them self-locking when used within a square hole.
✓Wide Application: Suitable for the fastening of wooden components to wood or metal, such as heavy applications like decks, pavilion, ship yacht, automotive suspension systems, mechanical industry, and other structures that require sturdy support.
⚙️ Specifications
Size
5/16-18 x 1-1/2"
Color
Black
Material
Stainless Steel
Brand
OUSCHR
Fastener Type
Carriage Bolt
Head Style
Round
Finish Type
Black
Shape
Round, Square
Thread Size
5/16"-18
Number of Items
8
Manufacturer
OUSCHR
