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1/4 SS Pan Head Machine Screw (INCH)

1/4 SS Pan Head Machine Screw (INCH)

1/4" stainless steel pan head machine screws per ASME B18.6.3 in A2-70 grade. Cylindrical head with Phillips drive for inch-specification metal-to-metal assembly at 1/4-inch diameter.

Specification #

Standard ANSI/ASME B18.6.3
Thread Coarse (standard)
Material Stainless Steel 304 (A2)
Grade A2-70
Stock In stock (304). Grade 316 available against bulk order
Head Type Pan head
Drive Type Phillips cross-recessed
Thread Class Class 2A per ASME B1.1
Finish Plain/Passivated (stainless steel)

Dimension #

Dimension of SS Pan Head Machine Screw (inch)

Size (inch) Thread Dia (min-max inch) Pitch (TPI) Length (inch) Thread Length (inch)
#6 0.138-0.138 32 0.50 0.50
#8 0.164-0.164 32 0.625 0.625
#10 0.190-0.190 24 0.75 0.75
1/4" 0.250-0.250 20 1.00 1.00
5/16" 0.3125-0.3125 18 1.25 1.25
  • All dimensions in inches, tolerance +/- 0.001 inch. Additional dimensions available on request.

Benefits #

Inch-series stainless steel pan head machine screws at 1/4-inch provide corrosion-resistant fastening in US-specification equipment. The pan head distributes clamping force across a wide bearing surface. A2 (304) stainless steel eliminates coating degradation in humid and atmospheric environments. Phillips drive allows controlled torque application with standard drivers. This diameter serves legacy US-specification machinery, marine hardware, and aerospace interior assemblies.

Common Applications #

Common applications for 1/4" inch-series SS pan head machine screws include:

  • Small US-spec instrument panels
  • Legacy equipment assembly (inch)
  • Marine interior fittings (inch)
  • Small electrical enclosures (inch)
  • Aerospace interior panels (inch)
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