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Glvaner (8 Sets) 5/16-18 x 4" Stainless Steel Carriage Bolts Screws Black and Hex Nuts & Flat Washers Black, Round Head Square Neck, 304 Stainless Steel 18-8, Full Thread Coverage
✅ 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 Sep 19, 2026 8:43 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 43% — a steep markdown from the official listing.
- 📉Pricing has not dipped this low in roughly six months, placing this offer among the better deals in that window.
- ➡️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
10/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
GVN Online
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓Package Includes: 8 Pcs Carriage Bolts (5/16-18 x 4") + 8 Pcs Hex Nuts (5/16"-18)+ 8 Pcs 5/16" Inside Diameter Flat Washers
✓Thread Size: 5/16-18; Thread Pitch: 18 TPI; Thread Type: Coarse Thread
✓Material: 304 Stainless Steel (A2-70) with durable black coating; Provides enhanced strength and superior corrosion resistance compared to standard stainless steel or zinc-plated fasteners; Features smooth, burr-free surfaces with scratch-resistant protection during handling and installation; Maintains a uniform industrial-grade black finish for professional applications
✓Bolt head diameter: 0.71 inch (18mm); Bolt head height: 0.17 inch (4.47mm); Bolt length (including the square neck): 4 inch (100mm)
✓Carriage bolts feature a domed head with integrated square neck; The square neck mechanically locks into square receiver holes, preventing rotation; The polished dome head creates a semi-recessed installation profile, blending functional grip security with reduced surface protrusion for enhanced safety in woodworking, structural connections, and agricultural equipment applications
⚙️ Specifications
Size
5/16-18 x 4"
Color
Black
Material
Stainless Steel
Brand
Glvaner
Fastener Type
Carriage Bolt
Head Style
Round
Thread Size
5/16"-18
Number of Items
8
Manufacturer
Glvaner
Package Dimensions
6.14 x 3.03 x 0.83 inches
Item Weight
12.9 ounces
