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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.
Unit of Measure

Thread Size

 N/A .250-20 (1/4-20)

Type

 N/A Knurled Cap - PF11

Thread Code

 N/A 0420

Screw Length Code

 N/A 0

A (Shank) Max.

 N/A .036 in PF_PF11_12_dimension.jpg

Min. Sheet Thickness

 N/A .036 in

Hole Size in Sheet + 0.003 - 0.000

 N/A .375 in

C Max.

 N/A .374 in

E ± .010

 N/A .575 in

G ± .025

 N/A .290 in

P ± .025

 N/A .000 in

T1 Nom.

 N/A .530 in

T2 Nom.

 N/A .790 in

Driver Size

 N/A Slotted/#3 Phillips

Min. Dist. Hole C/L to Edge

 N/A .460 in

Standard Finish

 N/A Knob - Natural Finish
Retainer - Bright nickel over copper flash per ASTM B689
Screw - Passivated and/or tested per ASTM A380
Spring - Natural Finish

CAD View

 N/A Fastened
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 400 Series Stainless 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 Passivated and/or tested per ASTM A380

Finish Spring

 N/A Natural Finish

For Use in Sheet Hardness

 N/A HRB 80 or Less (Hardness Rockwell “B” Scale) / HB 150 or Less (Hardness Brinell)

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