What is the minimum order quantity for track bolts?

Our minimum order quantity (MOQ) for track bolts is 500 pieces. For large volume orders, we offer competitive factory-direct pricing.

What material are your track bolts made of?

Our track bolts are made from 35CrMo alloy steel, heat-treated to Grade 12.9 strength (HRC 38-42). This provides excellent tensile strength and wear resistance for undercarriage applications.

Do you provide samples before bulk orders?

Yes, we provide samples for quality verification. Sample costs may apply but are typically credited toward your first bulk order.

What excavator brands are your track bolts compatible with?

Our track bolts are compatible with major brands including CAT (Caterpillar), Komatsu, Hitachi, Volvo, John Deere, and Kobelco. We manufacture to OEM specifications.

What is the typical lead time for track bolt orders?

Standard lead time is 15-25 days for production, plus shipping time. Rush orders may be accommodated based on current production capacity.

7G6442 CAT Track Bolt Grade 12.9

7G6442 Product Details

The 7G6442 is a Caterpillar-compatible track bolt manufactured by AzuLong Wear Parts. This Grade 12.9 hex head fastener is produced from 35CrMo Alloy Steel with black oxide finish, designed for track shoe mounting for cat tracked equipment. The UNF (Unified National Fine) specification provides the secure clamping force needed for track shoe retention under constant vibration and impact loading.

Grade 12.9 — Strength & Reliability

Grade 12.9 track bolts represent the highest strength class commonly used in undercarriage applications, with tensile strength reaching 1220 MPa. Manufactured from 35CrMo or 42CrMo alloy steel, these bolts are specified for heavy-duty tracked equipment operating in demanding conditions — mining sites, quarries, and construction in rocky terrain where track shoe bolts are subjected to extreme impact and vibration loads.

Undercarriage Engineering

Track bolts are among the most safety-critical fasteners on any tracked machine. They secure the track shoes to the chain links, and bolt failure during operation can cause the track to derail — creating a dangerous situation and costly downtime. The hex head design allows high-torque installation with standard tools, while the thicker head profile (compared to standard hex bolts) provides additional shear resistance at the bolt-head/shoe interface. Each AzuLong track bolt undergoes controlled heat treatment to achieve uniform hardness and is inspected for thread accuracy, head concentricity, and surface finish before shipping.

Equipment Compatibility

Compatible with Caterpillar excavators and bulldozers across multiple size classes. Specific equipment: CAT 320, CAT 330, CAT 345, CAT D6, CAT D7, CAT D8. Always follow the equipment manufacturer's torque specifications when installing track bolts. Under-torqued bolts can work loose from vibration; over-torqued bolts risk fatigue cracking. Contact rocky@azulong.com or WhatsApp +86-13777046128 for pricing, availability, and torque specifications.

CAT 320
CAT 330
CAT 345
CAT D6
CAT D7
CAT D8

Why Source from AzuLong

Factory Direct

No middleman — buy directly from the manufacturer in Ningbo, China

ISO 9001:2015

Certified quality management with per-batch quality documentation

MOQ: 1000 pcs

Per specification, negotiable for first orders. Samples available.

Material Options

35CrMo, 42CrMo, 40Cr — Grade 10.9 and 12.9 available

Custom OEM

Steel stamp logo on bolt head, branded packaging available