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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 PF11MF and PF12MF > Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified > Part # PF11MF-440-1  
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Part # PF11MF-440-1, Large Knob, Spring-loaded - Types PF11MF and PF12MF - Unified


  • Appropriate for close centerline-to-edge applications.
  • Doesn’t require high installation force.
  • Installs into any panel hardness.
  • Installs flush on back side of panel.




 Specifications   

Thread Size
.112-40 (#4-40)

Type
Knurled Cap - PF11MF

Thread Code
440

Screw Length Code
1

A Max.

 View
.041 in

Min. Sheet Thickness
.031 in

Hole Size in Sheet + 0.005 - 0.000
.187 in

C Max.
.186 in

E ± .010
.417 in

G ± .025
.230 in

P ± .025
.055 in

T1 Nom.
0.31 in

T2 Nom.
.450 in

Driver Size
Slotted/#1 Phillips

Thread Specification1
ANSI B1.1, 2A

Material Knob
Aluminum

Material Retainer
Aluminum

Material Screw
Heat-Treated Carbon Steel

Material Spring
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

CAD View
Fastened

CAD Supplier
PennEngineering® (PEM®)
1 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



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