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No matter how sophisticated or advanced, electronic components must be attached reliably and securely if they are to deliver optimum performance. We offer several fastener products for use with PC boards to satisfy component-to-board, board-to-board, and board-to-chassis attachment needs.

Broach/flare-mount standoffs offer greater pullout performance.
Standoffs, flare mount-KFB3
Broach/Flare-Mount Standoffs - Types KFB3 2
Unit of Measure
Items Standoffs, flare mount-KFB3
KFB3-M3-2ET
Broach/Flare-Mount Standoffs - Type KFB3 - Metric
Standoffs, flare mount-KFB3
KFB3-M4-2ET
Broach/Flare-Mount Standoffs - Type KFB3 - Metric
Standoffs, flare mount-KFB3
KFB3-M3-3ET
Broach/Flare-Mount Standoffs - Type KFB3 - Metric
Standoffs, flare mount-KFB3
KFB3-M4-3ET
Broach/Flare-Mount Standoffs - Type KFB3 - Metric
Standoffs, flare mount-KFB3
KFB3-M3-4ET
Broach/Flare-Mount Standoffs - Type KFB3 - Metric
Thread Size x Pitch N/A M3 x 0.5 N/A M4 x 0.7 N/A M3 x 0.5 N/A M4 x 0.7 N/A M3 x 0.5
L ± 0.131 N/A 2 mm a1089_1.jpg N/A 2 mm a1089_1.jpg N/A 3 mm a1089_1.jpg N/A 3 mm a1089_1.jpg N/A 4 mm a1089_1.jpg
A (Shank) Max. N/A 2.29 mm
Sheet Thickness N/A 1.27 to 1.65 mm
Hole Size in Sheet + 0.13 - 0.03 N/A 4.22 mm N/A 6.4 mm N/A 4.22 mm N/A 6.4 mm N/A 4.22 mm
B ± 0.08 N/A 3.23 mm N/A 5.23 mm N/A 3.23 mm N/A 5.23 mm N/A 3.23 mm
C Max. N/A 4.2 mm N/A 6.33 mm N/A 4.2 mm N/A 6.33 mm N/A 4.2 mm
E ± 0.13 N/A 5.56 mm N/A 8.74 mm N/A 5.56 mm N/A 8.74 mm N/A 5.56 mm
F - Minimum Thread Length N/A 2.00 mm N/A 2.00 mm N/A 3.00 mm N/A 3.00 mm N/A 4.00 mm
K ± 0.08 N/A 4.55 mm N/A 6.68 mm N/A 4.55 mm N/A 6.68 mm N/A 4.55 mm
P ± 0.25 N/A 1.00 mm
Min. Dist. Hole C/L to Edge2 N/A 4.33 mm N/A 6.36 mm N/A 4.33 mm N/A 6.36 mm N/A 4.33 mm
Thread Specification N/A Internal, ASME B1.13M, 6H
Fastener Material N/A CDA-353 Brass
Standard Finish N/A Electro-Plated Tin, ASTM B545, Class B with Preservative Coating, Annealed
Optional Finish3 N/A
CAD Supplier N/A PennEngineering® (PEM®)
Inventory N/A {0} N/A {0} N/A {0} N/A {0} N/A {0}
  • 1 The “L” dimension is the height of the installed stud at max grip. The height of the stud will increase if it is installed into thinner material. To calculate “actual L” use this formula: max grip - actual grip + L = “actual L”
  • 2 To minimize sheet distortion and maximize product performance, use a centerline-to-edge value greater or equal to the value specified.
  • 3 “BL” suffix will be added to part number to designate DuraBlack™ finish.