Plow bolts are specialty fasteners developed for applications requiring a flush mounting surface. Unlike carriage bolts, which are intended primarily for wood assemblies, plow bolts are designed to secure replaceable wear components used on construction, agricultural, mining and other heavy equipment. Their countersunk heads allow the fastener to sit below or flush with the working surface, reducing wear and preventing interference with moving material.
ASME B18.9 recognizes several plow bolt head styles, each developed for specific service conditions. The most common include No. 3 head plow bolts with a round countersunk head and square neck, No. 7 head plow bolts with a reverse key design, and No. 4 and No. 6 head styles available in both regular head and repair head configurations. Selecting the proper head style depends upon the equipment manufacturer's design and the component being secured.
G-Fast manufactures standard and made-to-print plow bolts for OEM production and replacement wear components. Standard products are available where applicable, while custom configurations are produced directly from customer drawings, specifications or approved samples.
Low carbon plow bolts are commonly manufactured to ASTM A307 requirements, while medium carbon Grade 5 applications may utilize ASTM A449. Materials, heat treatment and protective finishes are selected according to the service environment and customer specifications.
Every custom project begins with FASTENEERING®, our engineering review process that evaluates drawings, materials, tolerances and manufacturing methods before production. This helps ensure the finished plow bolt satisfies the functional requirements of the equipment while supporting efficient production.
Plow bolts are engineered for demanding wear applications where flush mounting, strength and serviceability are essential.
• Flush countersunk heads reduce wear and interference.
• Multiple ASME B18.9 head styles.
• Suitable for replaceable blades, cutting edges and wear plates.
• Standard and made-to-print production.
• ASTM A307 and ASTM A449 applications.
• OEM production quantities and blanket releases.
Custom head styles, materials and finishes are available to meet equipment manufacturer requirements.
G-Fast manufactures custom plow bolts directly from customer drawings, CAD models and approved samples. Head style, countersink geometry, square neck dimensions, reverse key configurations, shank diameter, thread length, material, heat treatment and protective finishes may all be tailored to meet OEM requirements.
Secondary operations and specialized coatings are available when specified. Every project is reviewed through FASTENEERING® to determine the manufacturing process best suited to the part geometry, production quantity and performance requirements.
To expedite quotations, customers should provide the part drawing or specification, quantity, material, finish, certification requirements and requested delivery schedule.
