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Online literature contains the most current information available.
  • Fully concealed-head for tool only access.
  • UL approved.
  • Assorted screw lengths for most applications.
Unit of Measure

Thread Size

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



Thread Code

N/A 440

Screw Length Code

N/A 40

A (Shank) Max.

N/A .060 in a1109.jpg

Min. Sheet Thickness

N/A .060 in

Hole Size in Sheet + 0.003 - 0.000

N/A .265 in

C Max.

N/A .264 in

E ± .010

N/A .312 in

G ± .016

N/A .250 in

P ± .025

N/A .000 in

T1 Max.

N/A .370 in

T2 Nom.

N/A .540 in

Driver Size

N/A #1 Phillips a1110.jpg

Min. Dist. Hole C/L to Edge

N/A .250 in

Thread Specification

N/A ANSI B1.1, 2A
Material Retainer1 N/A 300 Series Stainless Steel

Material Screw

N/A 400 Series Stainless Steel

Material Spring

N/A 300 Series Stainless Steel

Finish Retainer

N/A Passivated and/or tested per ASTM A380

Finish Screw

N/A Passivated and/or tested per ASTM A380

Finish Spring

N/A Natural Finish

Optional Finish

N/A Retainer – BN – Black Nitride
Screw – BN – Black nitride

For Use in Sheet Hardness

N/A HRB 70 or Less (Hardness Rockwell “B” Scale) / HB 125 or Less (Hardness Brinell)

CAD View

N/A Unfastened

CAD Supplier

N/A PennEngineering® (PEM®)
  • 1 The blue plastic retaining rings are a PEM trademark. The temperature limit is 200° F / 93° C.