343557 Bolt Self-Locking Fits Caterpillar Models
343557 Bolt Self-Locking Fits Caterpillar Models
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One New Aftermarket Replacement Self-Locking Bolt for Caterpillar (Cat) Equipment
This aftermarket replacement self-locking bolt replaces Caterpillar (Cat) OEM part number 343557 (also cataloged as 0343557 and 034-3557). Self-locking bolts feature a built-in locking mechanism that resists loosening under vibration and dynamic loads, making them a critical fastener in demanding construction and heavy equipment applications. This part has been identified across multiple aftermarket sources as a Caterpillar hardware fastener used in transmissions, axles, and engines.
Specifications
- Part Type: Self-Locking Bolt
- Head Type: Hex
- Weight: 0.04 lbs
- Application: Transmissions, axles, engines
Compatible Models
Caterpillar (Cat): Multiple models - verify fitment by cross-referencing OEM part number 343557 with your machine's parts manual before ordering.
Replaces Part Number(s):
343557, 0343557, 034-3557
New aftermarket replacement part - not remanufactured, not used.
