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  • Low-profile design satisfies many functional and cosmetic requirements.
  • Type PF50 with convenient large head and Phillips recess for tool or finger operation.
  • Available with six-lobe recess.
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Low profile knob, spring-loaded - PF50, PF60

Captive Panel Screw-Low Profile Knob, Spring-loaded - Unified PF50/PF60 Series
Low profile knob, spring-loaded - PF50, PF60

Captive Panel Screw-Low Profile Knob, Spring-loaded - Unified PF50/PF60 Series
Low profile knob, spring-loaded - PF50, PF60

Captive Panel Screw-Low Profile Knob, Spring-loaded - Unified PF50/PF60 Series
Low profile knob, spring-loaded - PF50, PF60

Captive Panel Screw-Low Profile Knob, Spring-loaded - Unified PF50/PF60 Series
Low profile knob, spring-loaded - PF50, PF60

Captive Panel Screw-Low Profile Knob, Spring-loaded - Unified PF50/PF60 Series
Thread Size N/A .112-40 (#4-40)
Type N/A Knurled Cap - PF50 N/A Knurled Cap - PF50 N/A Knurled Cap - PF50 N/A Knurled Cap - PF50 N/A Knurled Cap - PF51
Thread Code N/A 440
Screw Length Code N/A 0 N/A 0 N/A 1 N/A 1 N/A 0
A (Shank) Max.
N/A .030 in a1262unified.jpg N/A .030 in a1262unified.jpg N/A .030 in a1262unified.jpg N/A .030 in a1262unified.jpg N/A 0.038 in a1262unified.jpg
Min. Sheet Thickness N/A .030 in N/A .030 in N/A .030 in N/A .030 in N/A .040 in
Hole Size in Sheet + 0.003 - 0.000 N/A .203 in
C Max. N/A .202 in
E ± .010 N/A .406 in
G ± .025 N/A .230 in N/A .230 in N/A .290 in N/A .290 in N/A .230 in
H ± .008 N/A .207 in
P ± .025 N/A .000 in N/A .000 in N/A .060 in N/A .060 in N/A .000 in
T1 Max. N/A .340 in
T2 Nom. N/A .520 in
Driver Size N/A #1 Phillips a1263.jpg
Min. Dist. Hole C/L to Edge N/A .260 in
Thread Specification1 N/A ANSI B1.1, 2A
Material Knob N/A Carbon Steel
Material Retainer N/A Carbon Steel
Material Screw N/A Carbon Steel
Material Spring N/A 300 Series Stainless Steel
Finish Knob N/A Bright nickel over copper flash per ASTM B689
Finish Retainer N/A Bright Nickel over Copper Flash per ASTM B689
Finish Screw N/A Bright nickel over copper flash per ASTM B689
Finish Spring N/A Natural Finish
Optional Finish N/A
For Use in Sheet Hardness N/A HRB 60 or Less (Hardness Rockwell “B” Scale)
HB 107 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.