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Type CFN broaching fasteners are available for thinner sheet, close-to-edge applications. The locking element provides prevailing torque to eliminate loosening of mating threaded hardware.
Nylon insert, locking thread nuts – CFN
Nylon Insert Self Locking Fasteners - Types CFN 2
Unit of Measure
Items Nylon insert, locking thread nuts – CFN
CFN-M3-1ZI
Nylon Insert Self-Locking Fasteners - Types CFN - Metric
Nylon insert, locking thread nuts – CFN
CFN-M3-1ZC 
Nylon Insert Self-Locking Fasteners - Types CFN - Metric
Thread Size N/A M3 x 0.5
Thread Code N/A M3
Shank Code1 N/A 1
A (Shank) ± 0.08 N/A 1.020 mm Nylon-Insert-Self-Locking-Fasteners---Types-CFN-2.jpg
Min. Sheet Thickness N/A 1.10 mm
Hole Size in Sheet + 0.08 N/A 3.86 mm
C ± 0.05 N/A 4.11 mm
D ± 0.1 N/A 4.45 mm
E + 0.03 - 0.1 N/A 5.16 mm
T Max. N/A 2.65 mm
Min. Dist. Hole C/L to Edge2 N/A 2.93 mm
Max. Temperature Limit N/A 250 ºF120 ºC
Fastener Materials - Locking Element N/A Black Nylon
For Use in Sheet Hardness3 N/A HRB 60 / HB 107 or Less
Thread Specification N/A Internal, ASME B1.13M, 6H
Fastener Material N/A Carbon Steel
Standard Finish N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A
Optional Finish4 N/A N/A Zinc plated per ASTM B633, SC1 (5µm), Type II, yellow
CAD Supplier N/A PennEngineering® (PEM®)
Inventory N/A {0} N/A {0}
  • 1 Other shank and screw lengths available.
  • 2 To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
  • 3 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.
  • 4 “BL” suffix will be added to part number to designate DuraBlack™ finish.