This description provides technical specifications for the John Deere Round Head Square Neck Bolt, M8 x 40 (03M7188). It focuses on construction, sizing, and assembly guidance relevant to maintenance or repair work.

Key Features

• Type: Round head with square neck bolt (carriage bolt) featuring external threading along the shank.
• Rotation resistance: Square neck design prevents head rotation during assembly, enabling nut-driven tightening from the opposite side.
• Size: Thread diameter M8; thread length 40 mm.
• Assembly method: Insert through a hole and secure with a nut; head remains fixed while the nut is tightened or loosened.

Product Details

• Product title: John Deere Round Head Square Neck Bolt, M8 X 40 - 03M7188
• Description: A headed externally threaded fastener of one nominal diameter designed for insertion through holes in assembling parts which because of head design or other feature is prevented from being turned during assembly and which can be tightened or released only by turning a nut.
• Thread diameter x length: M8 x 40 mm
• Head style: Round head
• Neck style: Square neck
• Fastener type: Carriage bolt (externally threaded with round head and square neck)

Compatibility

• Nut compatibility: Requires M8 nuts to secure the bolt.
• Hole compatibility: Designed for through-holes sized for an M8 bolt to pass freely.
• Assembly context: Suitable for applications where the bolt head must remain stationary during nut tightening, such as bracket or framing assemblies where a non-rotating head is desirable.