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Hex Head Bolts [1/4-28 x 2 in. UHL, 5/16 in. Wrench, Stainless Steel, Polished]
InfoVehicle Info Needed
ARPPART NUMBER: 070-721-2000

Hex Head Bolts [1/4-28 x 2 in. UHL, 5/16 in. Wrench, Stainless Steel, Polished]

$2399
ShippingShips on 11/19/2026
Lowest PriceLowest Price Guarantee

1/4'' Bolts, 5/16'' Wrenching, Fine Thread
Hex Head SAE Bolts
  • 1/4-28 Thread
  • 2 in. Underhead Length
  • 1 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 1/4-28 x 2 in. hex 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 721-2000 Hex Head SAE Bolts Features:

    • Thread Size: 1/4-28
    • Underhead Length: 2 in.
    • Thread Length: 1 in.
    • Grip Length: 1 in.
    • Head Height: 0.255 in.
    • Wrench Size: 5/16 in.
    • Collar Diameter: 0.515 in.
    • Hex head design
    • Stainless steel resists rust and corrosion
    • Polished finish
    • Nominally rated at 180,000 psi tensile strength
    • Sold as a set of 5
      • Convenient 5-Packs

      Now you can use premium quality ARP stainless fasteners to install almost anything. Rates at 170,000 psi to provide a substantial extra margin of safety over Grade 8 or other hardware. 5/pkg.

    Part TypeBolt Kit
    Product LineARP Bulk Fine Thread Stainless Steel Bolts
    BrandARP
    Package Height0.5
    Package Width4.0
    Package Length6.0
    Weight0.2 PG
    Part CategoryPerformance Parts
    Thread Length1 in
    Head Diameter0.515 in
    Underhead Length2 in (50.8 mm)
    Shank Length1 in
    QuantitySet of 5
    Fastener FinishPolished
    MaterialStainless Steel
    Thread Size1/4-28
    Fastener MaterialStainless steel
    Fastener Head StyleHex
    Head Tool Size5/16 in
    Washers IncludedYes
    Thread Size (In.)1/4-28
    Head Height0.255 in
    Fastener Yield Strength (Psi)170,000
    Part FitmentUniversal
    Head StyleHex
    FinishPolished
    Under Head Length2 in
    Vendor Part Number721-2000
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning