Overview — Hexagonal Flange Head Bolt 3070393X
3070393X is the hexagonal flange head bolt used on CUMMINS diesel engines for fastening components in the specified threaded joints, with an integral flange that spreads the clamping load without a separate washer. We can supply all the original and replacement part numbers listed below, in stock or available on order — welcome to enquire by part number.
Parts Characteristics
The bolt combines a hexagonal head with an integral flange, sized to the original thread, length and strength grade. The flange spreads the clamping load over the bearing surface, reducing the risk of local indentation and holding the joint secure under vibration. The material and heat treatment match the original specification so the bolt delivers the required clamping force without stretching, and the thread is rolled to the original profile for consistent engagement. The finish resists corrosion in the engine environment, and the flange face is flat so the bolt seats evenly against the component.
Applicable Models & Applications
This flange head bolt is used across CUMMINS engine families in the threaded joints specified by the original part number, including component mounting, cover retention and accessory attachment. The family covers the same fastening duty across a wide range of adjacent builds, with the reference numbers 3071161-20, 3093939X, 3102651X, 3328379X, 3328637X, 3406888X, 3818121X, 3818122X, 3820213X and 3883123X identifying related variants. Confirm the thread size, length and grade against the bolt removed from your engine before ordering.
Maintenance & Replacement
Replace any bolt that is worn, stretched, corroded or has damaged threads, and never reuse a bolt that was removed under tension if the service procedure specifies new fasteners. Clean the threads of both the bolt and the tapped hole, and apply the lubrication and thread locker specified in the manual. Tighten to the correct torque with a calibrated wrench, following the tightening sequence given for multi-fastener joints. Check the flange bearing surface for damage before fitting, since a damaged flange can loosen in service.
Price Reference (USD)
The reference price for this Hexagonal Flange Head Bolt (3070393X) is approximately USD 3 – 15 per unit depending on size, grade, quantity and shipping destination. This is a planning estimate only — confirm current pricing and availability with our sales team before ordering.
Also in the HEXAGONAL FLANGE HEAD BOLT Series
3071161-20, 3093939X, 3102651X, 3328379X, 3328637X, 3406888X, 3818121X, 3818122X, 3820213X, 3883123X.
Value & Service
A flange bolt with the wrong grade or length can strip a casting or loosen under vibration, so we verify 3070393X against the original CUMMINS specification and confirm thread, length and grade before dispatch. We stock the bolt and the full family listed above and offer quantity pricing for workshops and rebuilders, with orders consolidated into one tracked shipment. Our team will confirm the correct variant if you are unsure which bolt your joint requires.
Racer Machinery is a dedicated construction-machinery parts supplier — send us your part number and engine model, and we will confirm fitment, price and lead time for this flange head bolt and related CUMMINS fasteners.
