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5/16-18 x 1-1/4" Carriage Bolts, 304 (18/8) Stainless Steel Carriage Screws, Round Domed Head Square Neck, Grade A2-70, Full Thread, Coarse Thread UNC, 10-Pack
✅ In stock
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Oct 25, 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.
- 📉Going back roughly eight months, a more competitive price has not appeared — this stands out as a strong value by recent standards.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
13/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
Eastlo
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Thread Size: 5/16-18; Screw Length: 1.25"; Package Contents: 10 pieces
✓Diameter of the head: 0.719" (18.26mm,max); Height of the round head: 0.176" (4.47mm,max); Height of the Neck: 0.187" (4.75mm,max)
✓Material: Crafted from high-grade 304 stainless steel (18-8) for exceptional strength and corrosion resistance—naturally durable without coatings. Outlasts regular steel and zinc-plated fasteners in harsh environments like moisture, chemicals, or extreme temperatures
✓Design feature: Big round domed head designed to eliminate the need for a washer; Square neck underneath the head helps self locking; Their strong holding power ensures the stability and reliability of your contructions; Use wrench or plier tools to turn the square neck to install them
✓Ideal for demanding outdoor/industrial applications—from agricultural machinery and bridge decking to marine fixtures—these carriage bolts deliver permanent anti-rotation security and zero-maintenance integrity in corrosive environments
⚙️ Specifications
Material
Stainless Steel
Thread Size
5/16"-18
Exterior Finish
Stainless Steel
Manufacturer Grade
Grade 8 8
Head Style
Round
Color
Silver
Fastener Type
Carriage Bolt
Brand
EASTLO
Thread Type
Coarse Thread
Thread Style
Right Hand
Item Hardness
Grade 8.8
