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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.
Unit of Measure

Thread Size

N/A .112-40 (#4-40)

Type

N/A Knurled Cap - PF51

Thread Code

N/A 440

Screw Length Code

N/A 1

A (Shank) Max.

N/A 0.038 in a1262unified.jpg

Min. Sheet Thickness

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 .290 in

H ± .008

N/A .207 in

P ± .025

N/A .052 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 Knob – Black Nitride
Screw – Black Nitride
Retainer – Black Nitride

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 Fastened

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.

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