Thumb Screw

Also known as: Knurled Head Screw, Hand Screw

Screws with knurled or winged heads for hand tightening without tools. Used where frequent adjustment is needed.

Quick Specifications

Head Style

Round

Drive Type

None

Thread Type

Machine

Point Type

Blunt

Dimensions

Diameter Range
0.112" - 0.5"
Length Range
0.25" - 3"
Measurement System
Imperial, Metric

Available Materials

Steel Stainless Steel Brass Nylon

Standards

ASME B18.6.3

Common Applications

  • + Access panels
  • + Electronics covers
  • + Test fixtures
  • + Quick-release assemblies

Not Recommended For

  • - High-torque requirements
  • - Vibration-prone locations

Related Fasteners