Part # PF11MW-0420-11BL, Large Knob, Spring-loaded - Types PF11MW and PF12MW

Unit of Measure

Thread Size	N/A .250-20 (1/4-20)
Type	N/A Knurled Cap - PF11MW
Thread Code	N/A 0420
Shank Code¹	N/A 1
Screw Length Code	N/A 1
A Max. Sheet Thickness	N/A .063 in
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 .350 in
H Min.	N/A .531 in
L1 Nom.	N/A 0.157 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
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
Optional Finish³	N/A Knob (aluminum) – Black Anodize Screw (steel and stainless) – Black Nitride
CAD View	N/A Unfastened
CAD Supplier	N/A PennEngineering® (PEM®)
CAD Note	N/A Mating washers for PF11MW / PF12MW panel fasteners are not shown in 3D drawings.

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
³ “BL” suffix will be added to part number to designate DuraBlack™ finish.

Thread Size