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mankk 521PCS M4 Bolts Assortment Kit, Hex Socket Head Cap Hardware
✅ In stock
F
Grade
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Oct 29, 2026 6:02 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.
- ➡️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
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
yifengmiao
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓M4 Hex Socket Head Cap Bolts is a commonly used fastening/connecting fastener in mechanical assembly, which is widely used in electronic equipment, precision instruments, mechanical equipment, industrial parts, automobile vehicles, furniture, molds and fixtures.
✓【High Quality Materials 】Cap Head Machine Bolts is made of 12.9 grade alloy steel and black oxide surface,high strength,not easy to deform,have a quality finish.Suitable for fastening in long-term vibration environment, not easy to slide wire.
✓【Product Features】Hex socket metric bolts adopts inner hexagon round head design,can be conveniently disassembled, and can be easily installed and disassembled by using gifted tools.The hexagonal head is convenient to operate in the narrow space of the mold.Anti-skid lines are arranged on the side of the head, which is convenient for manual auxiliary screwing.
✓【Wide Application】Widely used in all kinds of precision electronic equipment, machinery and industrial equipment, furniture and home, cars and transportation, hardware and decoration etc.Our suite contain the accessories needed for installation, which can adapt to a variety of large and small installation projects, enough to meet your needs.
✓【Package Include 】M4 Hex Socket Metric Bolts Kit,8 different sizes metric bolt ,Includes M4 x 6mm/8mm/12mm/16mm/20mm/25mm/30mm,with 130PCS nut,130PCS gasket,130PCS elastic sheet,and 1PCS M3 Hex wrench,521PCS in total,enough replacement to suit your needs.Put it in a transparent storage box, which is convenient to distinguish and take.
⚙️ Specifications
Size
521PCS M4 Kit
Color
Black
Material
Alloy Steel
Brand
mankk
Fastener Type
Socket Head
Size Name
521PCS M4 Kit
Item Diameter
6 millimeters
Number of Pieces
521
Outside Diameter
4 millimeters
Screw Head Style
Socket Cap
Thread Size
6mm x 4mm to 30mm x 4mm
