Overview – General Parts BOLT;U 4279326 Series
Built to Hitachi specifications, the BOLT;U 4279326 serves Hitachi assembly positions as the bolt; the cross-referenced series below covers the most common substitutions.
Parts Characteristics
A bolt that draws and clamps two components together, carrying the tensile load that holds the joint. It is the simplest fastener and, correct, the one that keeps an assembly from coming apart under load.
Applicable Models & Applications
Used across Hitachi assembly positions specifying this bolt (series). Match the thread, the length and the grade against your old bolt – bolts differ in how they clamp and carry.
Maintenance & Replacement
Inspect for a stretched thread and a rounded head at every service. A bolt that has begun to yield lets the joint move, and the movement is what wears the parts it clamps.
Replace rather than reuse a bolt torqued past its limit. A bolt run to yield snaps, and the snap is what leaves the joint half-clamped.
Confirm the grade and the torque on fit. A bolt too soft stretches; one too hard snaps before the joint is home.
Keep common bolts for your model on the bench. They cost almost nothing, they hold an expensive joint, and a component open on a bolt is a machine waiting on a small part.
Price Reference (USD)
Budget roughly USD 2 to USD 25 for a BOLT;U 4279326; volume orders and stock status can move this range either way.
Value & Service
We supply brand-new Hitachi bolts with the thread and grade confirmed against your assembly, so the joint stays clamped.
The BOLT;U family includes 4379801, 4637836, 4641442, 4665495, 4713817, XB00000988, YA00063594; we can cross-check which one matches your serial number.
Ordering the Hitachi BOLT;U 4279326 from Racer Machinery means dealing with a specialist who understands General Parts and cross-references every part number for you.
