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12-Point Head Bolts [1/2-20 x 4.500 in. UHL, 9/16 in. Wrench, Stainless Steel, Polished]
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ARPPART NUMBER: 070-755-4500

12-Point Head Bolts [1/2-20 x 4.500 in. UHL, 9/16 in. Wrench, Stainless Steel, Polished]

$4499
ShippingShips on 11/25/2026
Lowest PriceLowest Price Guarantee

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

    Polished stainless hardware is one of the easiest ways to dress up an engine bay, but it still has to do its job. These 1/2-20 x 4.500 in. 12-point head bolts are machined to tight tolerances and polished to a bright finish, so they resist corrosion while offering far more strength than typical hardware store bolts.

    ARP 755-4500 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
    • Stainless steel resists rust and corrosion
    • Polished finish
    • Nominally rated at 180,000 psi tensile strength
    • Sold as a set of 5
    • Part TypeBolt Kit
    BrandARP
    Package Height1.5
    Package Width6.0
    Package Length9.5
    Weight1.605 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 FinishPolished
    MaterialStainless Steel
    Thread Size1/2-20
    Fastener MaterialStainless steel
    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
    FinishPolished
    Under Head Length4.500 in
    Vendor Part Number755-4500
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews
    Some parts are not legal for use in California or other states with similar laws / regulations
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