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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Captive Panel Screws and Hardware > Large Knob, Spring-Loaded – Types PF11, PF11M, PF11MF, PF11MW, PF12, PF12M, PF12MF, PEM C.A.P.S®, PF12MW, PF15, PF15M > Large Knob, Spring-loaded – Types PF11MW and PF12MW > Large Knob, Spring-loaded - Types PF11MW and PF12MW - Unified > Part # PF11MW-0420-11BL  

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

  • Compensates for mating hole misalignment.
  • Installs into any panel hardness.
NOTE: Mating washers for PF11MW / PF12MW panel fasteners are not shown in 3D drawings.




 Specifications   

Thread Size
.250-20 (1/4-20)

Type
Knurled Cap - PF11MW

Thread Code
0420

Shank Code1
1

Screw Length Code
1

A Max. Sheet Thickness

 View
.063 in

B Min.
.128 in

D Hole Size in Sheet + 0.003 - 0.001
.413 in

E ± .010
.575 in

G Nom.
.350 in

H Min.
.531 in

L1 Nom.
0.157 in

L2 Max.
.140 in

T1 Nom.
.530 in

T2 Nom.
.790 in

Driver Size
Slotted/#3 Phillips

Min. Float
.081 in

W Nom.
.468 in

Thread Specification2
ANSI B1.1, 2A

Material Knob
Aluminum

Material Retainer
Aluminum

Material Screw
Heat-Treated Carbon Steel

Material Spring
300 Series Stainless Steel

Material Washer
300 Series Stainless Steel

Finish Knob
Natural Finish

Finish Retainer
Natural finish

Finish Screw
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

Finish Spring
Natural Finish

Optional Finish3
Knob (aluminum) – Black Anodize
Screw (steel and stainless) – Black Nitride

CAD View
Unfastened

CAD Supplier
PennEngineering® (PEM®)

CAD Note
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.


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