Value Collection 37721 Plow Bolt 1-8 Unc Alloy Steel Grade 8

Product Description

The VALUE COLLECTION 37721 is an alloy steel plow bolt designed for heavy-duty fastening applications where a flush, countersunk head profile is required. Built to Grade 8 strength specifications, this bolt delivers high tensile and proof load capacity suitable for demanding structural and equipment fastening tasks. The 1-8 UNC thread pattern provides a coarse pitch for reliable engagement in metal and fabricated assemblies. At 4 inches overall length (OAL), it suits a range of thick-material connections. The uncoated finish is standard for applications where a secondary coating or field treatment will be applied by the installer.

Plow bolts are commonly used in agricultural equipment, construction machinery, earthmoving attachments, conveyor systems, and similar heavy-use fabrications where a flat or countersunk head must sit flush with the mating surface to prevent interference. This bolt is installed by equipment mechanics, millwrights, and maintenance technicians working on structural frames, wear plates, and implement attachments. The coarse 1-8 UNC thread makes it well suited for use in tapped steel, cast components, and applications where quick thread engagement is needed.

Key Features

• Grade 8 alloy steel construction for high tensile strength in demanding fastening applications
• 1-8 UNC coarse thread for reliable engagement and efficient installation
• 4 inches overall length suits thick-plate and heavy-material assemblies
• Flush countersunk head profile prevents surface interference on wear plates and equipment frames
• Uncoated finish allows for field coating, galvanizing, or use as-is where corrosion protection is not required

Compatibility

Designed as a standard-specification replacement plow bolt for agricultural equipment, construction machinery, and heavy fabrication assemblies requiring a 1-8 UNC coarse-thread, Grade 8 fastener with a 4 inch OAL.

Installation Notes

Plow bolts are installed by equipment mechanics and maintenance technicians using standard hand or impact tools rated for Grade 8 hardware. Always de-energize and lock out equipment before fastener replacement or removal. Use the appropriate Grade 8 rated nut and hardened washer where required by the assembly specification. Do not mix Grade 8 hardware with lower-grade nuts or fasteners, as this reduces the integrity of the joint.