Pencom

Fan Screws

Fan Screws
Ideal for mounting fans to chassis or finger guards to fans. Hardened screws form threads in mild steel, aluminum and hard plastics. Reduced-diameter point aligns multiple surfaces to be fastened. Choices of screw thread, length, head style and drive. Material and finish compliant with Restriction of Hazardous Substances (RoHS) Directive 2002/95/EC.

Materials - Finish:

  • Heat-treated Carbon Steel - Bright Nickel Finish.
* Custom materials and finishes available.
Fan Screw Drawing

Part Description Example:

M3.9 x 12mm PH - FL - FAN - STL - NI
Thread Code Length Code Drive Code Head Code Series Material Finish
Drive Code Description
Cross Recess PH Cross Recess
6 Lobe Recess TX 6 - Lobe Recess
Head Code Description
FL Flat Head
TRUSS Truss Head
Size
(Type B) 		Thread
Code		 Hole
Dia.		 Length
Code 		L
Length		 Head Type
Flat Head Truss Head
D
Head
Dia.		 H
Head
Height
Max.
(REF)		 Drive D
Head
Dia.		 H
Head
Height		 Drive
Cross
Recess		 Six - Lobe
Recess 		Cross
Recess		 Six- Lobe
Recess
Size Size Size Size T
Min.
M3.9x1.2 M3.9 3.34 10.5 10.7/10.3 5.56/5.35 1.12 2 T8 7.10/6.80 1.5 2 T15 0.95
12 12.5/11.5 5.56/5.35 1.12 2 T8 7.10/6.80 1.5 2 T15 0.95
M4.2x1.4 M4.2 3.50 10.5 10.7/10.3 6.10/5.80 1.12 2 T8 7.40/7.10 1.7 2 T15 1.05
12 12.5/11.5 6.10/5.80 1.12 2 T8 7.40/7.10 1.7 2 T15 1.05
M4.9x1.6 M4.9 4.20 10.5 10.7/10.3 6.65/6.35 1.18 2 T10 8.10/7.80 2.0 2 T20 1.27
12 12.5/11.5 6.65/6.35 1.18 2 T10 8.10/7.80 2.0 2 T20 1.27