Value Collection 427745MSC Flange Bolt M12x1.75 60mm Grade 10.9

Product Description

The VALUE COLLECTION 427745MSC is a metric smooth flange bolt designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. The bolt features an M12 x 1.75 thread with 40 mm of thread engagement on a 60 mm length under head, making it a partially threaded fastener suited for applications requiring a clean shank section between the bearing surface and thread start. Manufactured from Grade 10.9 alloy steel with a phosphate and oil finish, this bolt delivers high tensile strength and corrosion inhibition. The integrated smooth flange distributes clamping load over a wider surface area without requiring a separate washer. Conforms to DIN 6921 and DIN ISO 898-1 standards.

This bolt is used in precision mechanical assemblies, automotive subframes, heavy equipment, and industrial machinery where metric fasteners and controlled clamping load are required. The 26.6 mm smooth flange bearing surface makes it well suited for softer base materials or oversized clearance holes where standard hex bolts lack adequate load distribution. The hex drive accepts a 15.73 to 16 mm wrench or socket. Installation is performed by qualified machinists, millwrights, or mechanical technicians working to metric fastener specifications.

Key Features

• M12 x 1.75 metric thread with 40 mm thread length, partially threaded for shank clearance fit
• 60 mm length under head for applications requiring a longer grip length
• Grade 10.9 alloy steel construction for high tensile and proof load capacity
• 26.6 mm smooth flange eliminates the need for a separate flat washer
• Phosphate and oil finish provides baseline corrosion inhibition and lubricity for controlled torque
• Conforms to DIN 6921 and DIN ISO 898-1 fastener standards

Compatibility

Designed as a DIN 6921-compliant metric smooth flange bolt suitable for M12 x 1.75 threaded assemblies requiring Grade 10.9 alloy steel partially threaded fasteners.

Installation Notes

Installation should be performed by a qualified mechanic or millwright familiar with metric fastener torque specifications for Grade 10.9 hardware. Always verify thread engagement depth and clearance hole sizing before assembly. Phosphate and oil finish provides a lubricity factor that affects torque-to-clamp-load calculations - confirm your torque specification accounts for the finish coating. Do not reuse fasteners that show signs of thread deformation, corrosion, or impact damage.