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Fine Finish Blind nuts (BF™/BFS™) for high-voltage applications where metal chips and conductive fines could result in breakdown or arcing.
  • Designed for sensitive applications where metal chips cannot be tolerated
  • Oversized mounting holes to provide better performance in soft material
  • Large flange design provides greater bearing surface
Unit of Measure

Thread Size x Pitch

N/A M8 x 1.25

Thread Code

N/A M8

Shank Code

N/A 2

A (Shank) Max.

N/A 2.21 mm BF_BFS-Dimensions.jpg

Min. Sheet Thickness

N/A 2.29 mm

Hole Size in Sheet + 0.08

N/A 12.7 mm

B Max.

N/A 11.7 mm

C Max.

N/A 12.67 mm

E ± 0.25

N/A 16.35 mm

F Min.

N/A 13.5 mm

L Max.

N/A 19.0 mm

T ± 0.25

N/A 22.0 mm
Min. Dist. Hole C/L to Edge1 N/A 13.5 mm
For Use in Sheet Hardness2 N/A HRB 70 / HB 125 or less

Thread Specification

N/A Internal, ASME B1.1, 2B / ASME B1.13M, 6H

Fastener Material

N/A 300 Series Stainless Steel

Standard Finish

N/A Passivated and/or Tested Per ASTM A380

CAD Supplier

N/A PennEngineering® (PEM®)
  • 1 For more information on proximity to bends and distance to other clinch hardware, see PEM® Tech Sheet C/L To Edge.
  • 2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.