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Online literature contains the most current information available.
  • Compensates for mating hole misalignment.
  • Installs into any panel hardness.
Unit of Measure

Thread Size

N/A .250-20 (1/4-20)


N/A Knurled Cap - PF11MW

Thread Code

N/A 0420
Shank Code1 N/A 1

Screw Length Code

N/A 2

A Max. Sheet Thickness

N/A .063 in a1103.jpg

B Min.

N/A .128 in

D Hole Size in Sheet + 0.003 - 0.001

N/A .413 in

E ± .010

N/A .575 in

G Nom.

N/A .410 in

H Min.

N/A .531 in

L1 Nom.

N/A .157 in

L2 Max.

N/A .140 in

T1 Nom.

N/A .530 in

T2 Nom.

N/A .790 in

Driver Size

N/A Slotted/#3 Phillips a1104.jpg

Min. Float

N/A .081 in

W Nom.

N/A .468 in
Thread Specification2 N/A ANSI B1.1, 2A

Material Knob

N/A Aluminum

Material Retainer

N/A Aluminum

Material Screw

N/A Heat-Treated Carbon Steel

Material Spring

N/A 300 Series Stainless Steel

Material Washer

N/A 300 Series Stainless Steel

Finish Knob

N/A Natural Finish

Finish Retainer

N/A Natural finish

Finish Screw

N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

Finish Spring

N/A Natural Finish

CAD View

N/A Fastened

CAD Supplier

N/A PennEngineering® (PEM®)
  • 1 Other shank and screw lengths available.
  • 2 As with all external plated threads, Class 2A/6g, the maximum major and pitch, after plating, may equal basic sizes and be gauged to Class 3A/4h, per ANSI B1.1, Section 8, Table 3A and ANSI B1.13M, Section 8, Paragraph 8.2