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  • Shoulder on retainer provides positive stop during installation.
  • Available in self-clinching, flaring, or floating mounting styles.
  • Available with knurled or un-knurled metal cap, black metal cap, or a custom color plastic cap.
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Large knob, spring-loaded –Types PF11M and PF12M

Large Knob, Spring-loaded - Types PF11M and PF12M - Unified
Large knob, spring-loaded –Types PF11M and PF12M

Large Knob, Spring-loaded - Types PF11M and PF12M - Unified
Large knob, spring-loaded –Types PF11M and PF12M

Large Knob, Spring-loaded - Types PF11M and PF12M - Unified
Large knob, spring-loaded –Types PF11M and PF12M

Large Knob, Spring-loaded - Types PF11M and PF12M - Unified
Large knob, spring-loaded –Types PF11M and PF12M

Large Knob, Spring-loaded - Types PF11M and PF12M - Unified
Thread Size N/A .112-40 (#4-40)
Type N/A Knurled Cap - PF11M
Thread Code N/A 440
Screw Length Code N/A 0 N/A 0 N/A 1 N/A 1 N/A 2
A Max.
N/A .036 in a1098.jpg
Min. Sheet Thickness N/A .036 in
Hole Size in Sheet + 0.003 - 0.000 N/A .219 in
C Max. N/A .218 in
E ± .010 N/A .417 in
G ± .025 N/A .170 in N/A .170 in N/A .230 in N/A .230 in N/A .290 in
P ± .025 N/A .000 in N/A .000 in N/A .060 in N/A .060 in N/A .120 in
T1 Nom. N/A 0.31 in
T2 Nom. N/A .450 in
Driver Size N/A Slotted/#1 Phillips a1100.jpg
Min. Dist. Hole C/L to Edge N/A .28 in
Thread Specification1 N/A ANSI B1.1, 2A
Material Knob N/A Aluminum
Material Retainer N/A Heat-Treated Carbon Steel
Material Screw N/A Heat-Treated Carbon Steel
Material Spring N/A 300 Series Stainless Steel
Finish Knob N/A Natural Finish
Finish Retainer N/A Bright Nickel over Copper Flash per ASTM B689
Finish Screw N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
Finish Spring N/A Natural Finish
Optional Finish2 N/A
For Use in Sheet Hardness N/A HRB 80 or Less (Hardness Rockwell “B” Scale) / HB 150 or Less (Hardness Brinell)
CAD View N/A Unfastened N/A Fastened N/A Unfastened N/A Fastened N/A Unfastened
CAD Supplier N/A 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
  • 2 “BL” suffix will be added to part number to designate DuraBlack™ finish.