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12-Point Head Bolts [1/2-20 x 4.500 in. UHL, 9/16 in. Wrench, 8740 Chromoly, Black Oxide]
InfoVehicle Info Needed
ARPPART NUMBER: 070-726-4500

12-Point Head Bolts [1/2-20 x 4.500 in. UHL, 9/16 in. Wrench, 8740 Chromoly, Black Oxide]

$3399
ShippingShips on 11/19/2026
Lowest PriceLowest Price Guarantee

12-Point Head SAE Bolts
  • 1/2-20 Thread
  • 4.500 in. Underhead Length
  • 1.250 in. Thread Length
  • 8740 Chromoly Steel, Black Oxide Finish
  • Set of 5

    If you are replacing tired or mismatched hardware with something you can trust under load, these 1/2-20 x 4.500 in. 12-point head bolts are a solid choice. Heat-treated chromoly construction and a black oxide finish deliver high tensile strength with a clean, uniform look.

    ARP 726-4500 12-Point Head SAE Bolts Features:

    • Thread Size: 1/2-20
    • Underhead Length: 4.500 in.
    • Thread Length: 1.250 in.
    • Grip Length: 3.250 in.
    • Head Height: 0.450 in.
    • Wrench Size: 9/16 in.
    • Collar Diameter: 0.850 in.
    • 12-Point head design
    • Heat-treated chromoly steel with black oxide finish
    • Nominally rated at 180,000 psi tensile strength
    • Sold as a set of 5
    • Part TypeBolt Kit
    BrandARP
    Package Height1.0
    Package Width8.2
    Package Length9.6
    Weight1.59 PG
    Part CategoryPerformance Parts
    Thread Length1.250 in
    Head Diameter0.850 in
    Underhead Length4.5 in (114.3 mm)
    Shank Length3.250 in
    Wrench Diameter (In.)9/16
    QuantitySet of 5
    Fastener FinishBlack oxide
    Material8740 Chromoly Steel
    Thread Size1/2-20
    Fastener Material8740 chromoly
    Fastener Head Style12-point
    Head Tool Size9/16 in
    Washers IncludedYes
    Thread Size (In.)1/2-20
    Head Height0.450 in
    Fastener Yield Strength (Psi)170,000
    Part FitmentUniversal
    Head Style12-Point
    FinishBlack Oxide
    Under Head Length4.500 in
    Vendor Part Number726-4500
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning