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Broaching Nuts  KF2-U,  KFS2-U

Self Clinching Fasteners  •  Fasteners for PC Boards
American Standard (Inches) & Metric Sizes
• Self-clinching    • Threaded internally
• Installed on PC boards    • Used on materials too thin to be threaded    • Knurled shank
American Standard Sizes:   • Series  KF2-U    • Series  KFS2-U
Metric Sizes:   • Series  KF2-U    • Series  KFS2-U    • Series  KFS2-U (Zinc Clear)
Series  KF2-U
Series  KF2-U  /  American Standard Sizes
      • Head Shape-  Round
      • Sheet Hardness-  HRB 60 / HB 107 or Less
      • Material-  Carbon Steel
      • "ET" Finish-  Electro-Plated Bright Tin per ASTM B545,
                             Class B with Preservative Coating
      • "DT" Finish-  Electro-Plated Matte-Tin per ASTM B 545,
                             Class A with Clear Preservative Coating, Annealed
Series KF2-U
American Standard Sizes (SAE)
Part
Number		 Thread "A"
Shank
Max.		 "T"
Head
Height		 "E"
Head
Diameter		 "C"
Body
Diameter		 Min.
Sheet
Thickness		 Hole Size
in Sheet		 Min.
Distance
to Edge		 Mil-Spec
  KF2-256-ET-U 2-56 0.060" 0.065" 0.219" 0.165" 0.060" 0.147" 0.160" M45938/12-1
  KF2-440-ET-U 4-40 0.060" 0.065" 0.219" 0.184" 0.060" 0.166" 0.170" M45938/12-2
  KF2-632-ET-U 6-32 0.060" 0.065" 0.281" 0.231" 0.060" 0.213" 0.220" M45938/12-3
  KF2-832-ET-U 8-32 0.060" 0.096" 0.344" 0.268" 0.060" 0.250" 0.250" M45938/12-4
  KF2-024-ET-U 10-24 0.060" 0.127" 0.375" 0.290" 0.060" 0.272" 0.280" N/A
  KF2-032-ET-U 10-32 0.060" 0.127" 0.375" 0.290" 0.060" 0.272" 0.280" M45938/12-5
  KF2-420-ET-U 1/4-20 0.060" 0.235" 0.437" 0.346" 0.060" 0.328" 0.300" N/A
 
  KF2-256-DT-U 2-56 0.060" 0.065" 0.219" 0.165" 0.060" 0.147" 0.160" N/A
  KF2-440-DT-U 4-40 0.060" 0.065" 0.219" 0.184" 0.060" 0.166" 0.170" N/A
  KF2-632-DT-U 6-32 0.060" 0.065" 0.281" 0.231" 0.060" 0.213" 0.220" N/A
  KF2-832-DT-U 8-32 0.060" 0.096" 0.344" 0.268" 0.060" 0.250" 0.250" N/A
  KF2-024-DT-U 10-24 0.060" 0.127" 0.375" 0.290" 0.060" 0.272" 0.280" N/A
  KF2-032-DT-U 10-32 0.060" 0.127" 0.375" 0.290" 0.060" 0.272" 0.280" N/A
  KF2-420-DT-U 1/4-20 0.060" 0.235" 0.437" 0.346" 0.060" 0.328" 0.300" N/A
Series  KF2-U  /  Metric Sizes
      • Head Shape-  Round
      • Sheet Hardness-  HRB 60 / HB 107 or Less
      • Material-  Carbon Steel
      • "ET" Finish-  Electro-Plated Bright Tin per ASTM B545,
                             Class B with Preservative Coating
      • "DT" Finish-  Electro-Plated Matte-Tin per ASTM B 545,
                             Class A with Clear Preservative Coating, Annealed
Series KF2-U
Metric Sizes
Part
Number		 Thread "A"
Shank
Max.		 "T"
Head
Height		 "E"
Head
Diameter		 "C"
Body
Diameter		 Min.
Sheet
Thickness		 Hole Size
in Sheet		 Min.
Distance
to Edge		 Mil-Spec
  KF2-M2-ET-U M2 x 0.4 1.53
mm		 1.50
mm		 5.56
mm		 4.19
mm		 1.53
mm		 3.73
mm		 4.20
mm		 N/A
  KF2-M2.5-ET-U M2.5 x 0.45 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
  KF2-M3-ET-U M3 x 0.5 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
  KF2-M4-ET-U M4 x 0.7 1.53
mm		 2.00
mm		 8.74
mm		 6.81
mm		 1.53
mm		 6.40
mm		 6.40
mm		 N/A
  KF2-M5-ET-U M5 x 0.8 1.53
mm		 3.00
mm		 9.53
mm		 7.37
mm		 1.53
mm		 6.90
mm		 7.10
mm		 N/A
 
  KF2-M2-DT-U M2 x 0.4 1.53
mm		 1.50
mm		 5.56
mm		 4.19
mm		 1.53
mm		 3.73
mm		 4.20
mm		 N/A
  KF2-M2.5-DT-U M2.5 x 0.45 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
  KF2-M3-DT-U M3 x 0.5 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
  KF2-M4-DT-U M4 x 0.7 1.53
mm		 2.00
mm		 8.74
mm		 6.81
mm		 1.53
mm		 6.40
mm		 6.40
mm		 N/A
  KF2-M5-DT-U M5 x 0.8 1.53
mm		 3.00
mm		 9.53
mm		 7.37
mm		 1.53
mm		 6.90
mm		 7.10
mm		 N/A
Series KFS2-U
Series  KFS2-U  /  American Standard Sizes
      • Head Shape-  Round
      • Sheet Hardness-  HRB 70 / HB 125 or Less
      • Material-  300 Series Stainless Steel
      • Finish-  Passivated per ASTM A380
Series KFS2-U
American Standard Sizes
(SAE)
Part
Number		 Thread "A"
Shank
Max.		 "T"
Head
Height		 "E"
Head
Diameter		 "C"
Body
Diameter		 Min.
Sheet
Thickness		 Hole Size
in Sheet		 Min.
Distance
to Edge		 Mil-Spec
  KFS2-256-U 2-56 0.060" 0.065" 0.219" 0.165" 0.060" 0.147" 0.160" M45938/12-1C
  KFS2-440-U 4-40 0.060" 0.065" 0.219" 0.184" 0.060" 0.166" 0.170" M45938/12-2C
  KFS2-632-U 6-32 0.060" 0.065" 0.281" 0.231" 0.060" 0.213" 0.220" M45938/12-3C
  KFS2-832-U 8-32 0.060" 0.096" 0.344" 0.268" 0.060" 0.250" 0.250" M45938/12-4C
  KFS2-024-U 10-24 0.060" 0.127" 0.375" 0.290" 0.060" 0.272" 0.280" N/A
  KFS2-032-U 10-32 0.060" 0.127" 0.375" 0.290" 0.060" 0.272" 0.280" M45938/12-5C
  KFS2-420-U 1/4-20 0.060" 0.235" 0.437" 0.346" 0.060" 0.328" 0.300" N/A
Series  KFS2-U  /  Metric Sizes
      • Head Shape-  Round
      • Sheet Hardness-  HRB 70 / HB 125 or Less
      • Material-  300 Series Stainless Steel
      • Finish-  Passivated per ASTM A380
Series KFS2-U
Metric Sizes
Part
Number		 Thread "A"
Shank
Max.		 "T"
Head
Height		 "E"
Head
Diameter		 "C"
Body
Diameter		 Min.
Sheet
Thickness		 Hole Size
in Sheet		 Min.
Distance
to Edge		 Mil-Spec
  KFS2-M2-U M2 x 0.4 1.53
mm		 1.50
mm		 5.56
mm		 4.19
mm		 1.53
mm		 3.73
mm		 4.20
mm		 N/A
  KFS2-M2.5-U M2.5 x 0.45 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
 
  KFS2-M3-U M3 x 0.5 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
  KFS2-M3-1-U M3 x 0.5 1.53
mm		 2.10
mm		 5.50
mm		 4.70
mm		 1.53
mm		 4.50
mm		 4.50
mm		 N/A
  KFS2-M3-1.5-U M3 x 0.5 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.20
mm		 4.20
mm		 N/A
  KFS2-M3-2-U M3 x 0.5 2.00
mm		 2.10
mm		 5.50
mm		 4.70
mm		 2.00
mm		 4.50
mm		 4.60
mm		 N/A
 
  KFS2-M4-U M4 x 0.7 1.53
mm		 2.00
mm		 8.74
mm		 6.81
mm		 1.53
mm		 6.40
mm		 6.40
mm		 N/A
  KFS2-M4-1-U M4 x 0.7 1.53
mm		 2.30
mm		 7.00
mm		 5.70
mm		 1.53
mm		 5.50
mm		 5.50
mm		 N/A
  KFS2-M4-1.5-U M4 x 0.7 1.53
mm		 2.00
mm		 8.74
mm		 6.81
mm		 1.53
mm		 6.40
mm		 6.40
mm		 N/A
  KFS2-M4-2-U M4 x 0.7 2.00
mm		 2.70
mm		 7.00
mm		 5.70
mm		 2.00
mm		 5.50
mm		 5.50
mm		 N/A
 
  KFS2-M5-U M5 x 0.8 1.53
mm		 3.00
mm		 9.53
mm		 7.37
mm		 1.53
mm		 6.90
mm		 7.10
mm		 N/A
  KFS2-M5-1-U M5 x 0.8 1.53
mm		 3.10
mm		 8.00
mm		 6.75
mm		 1.53
mm		 6.50
mm		 6.50
mm		 N/A
  KFS2-M5-1.5-U M5 x 0.8 1.53
mm		 3.00
mm		 9.53
mm		 7.37
mm		 1.53
mm		 6.90
mm		 6.90
mm		 N/A
  KFS2-M5-2-U M5 x 0.8 2.00
mm		 3.20
mm		 8.00
mm		 6.75
mm		 2.00
mm		 6.50
mm		 6.50
mm		 N/A
 
  KFS2-M6-1-U M6 x 1.0 1.53
mm		 4.10
mm		 10.00
mm		 8.30
mm		 1.53
mm		 8.00
mm		 8.00
mm		 N/A
  KFS2-M6-2-U M6 x 1.0 2.00
mm		 3.20
mm		 10.00
mm		 8.25
mm		 2.00
mm		 8.00
mm		 8.00
mm		 N/A
 
  KFS2-M8-1.25-U M8 x 1.25 2.00
mm		 4.70
mm		 13.00
mm		 10.30
mm		 2.00
mm		 10.00
mm		 10.00
mm		 N/A
 
  KFS2-M10-1.5-U M10 x 1.5 2.00
mm		 6.20
mm		 15.00
mm		 12.85
mm		 2.00
mm		 12.50
mm		 12.50
mm		 N/A
Series  KFS2-U  (Zinc Clear)  /  Metric Sizes
      • Head Shape-  Round
      • Sheet Hardness-  HRB 80 / HB 150 or Less
      • Material-  Heat-Treated Carbon Steel
      • Finish-  Zinc Clear Plated per ASTM B633
Series KFS2-U
Metric Sizes
Part
Number		 Thread "A"
Shank
Max.		 "T"
Head
Height		 "E"
Head
Diameter		 "C"
Body
Diameter		 Min.
Sheet
Thickness		 Hole Size
in Sheet		 Min.
Distance
to Edge		 Mil-Spec
  KFS2-M2-ZI-U M2 x 0.4 1.53
mm		 1.50
mm		 5.56
mm		 4.19
mm		 1.53
mm		 3.73
mm		 4.20
mm		 N/A
  KFS2-M2.5-ZI-U M2.5 x 0.45 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
 
  KFS2-M3-ZI-U M3 x 0.5 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.22
mm		 4.40
mm		 N/A
  KFS2-M3-1-ZI-U M3 x 0.5 1.53
mm		 2.10
mm		 5.50
mm		 4.70
mm		 1.53
mm		 4.50
mm		 4.50
mm		 N/A
  KFS2-M3-1.5-ZI-U M3 x 0.5 1.53
mm		 1.50
mm		 5.56
mm		 4.68
mm		 1.53
mm		 4.20
mm		 4.20
mm		 N/A
  KFS2-M3-2-ZI-U M3 x 0.5 2.00
mm		 2.10
mm		 5.50
mm		 4.70
mm		 2.00
mm		 4.50
mm		 4.60
mm		 N/A
 
  KFS2-M4-ZI-U M4 x 0.7 1.53
mm		 2.00
mm		 8.74
mm		 6.81
mm		 1.53
mm		 6.40
mm		 6.40
mm		 N/A
  KFS2-M4-1-ZI-U M4 x 0.7 1.53
mm		 2.30
mm		 7.00
mm		 5.70
mm		 1.53
mm		 5.50
mm		 5.50
mm		 N/A
  KFS2-M4-1.5-ZI-U M4 x 0.7 1.53
mm		 2.00
mm		 8.74
mm		 6.81
mm		 1.53
mm		 6.40
mm		 6.40
mm		 N/A
  KFS2-M4-2-ZI-U M4 x 0.7 2.00
mm		 2.70
mm		 7.00
mm		 5.70
mm		 2.00
mm		 5.50
mm		 5.50
mm		 N/A
 
  KFS2-M5-ZI-U M5 x 0.8 1.53
mm		 3.00
mm		 9.53
mm		 7.37
mm		 1.53
mm		 6.90
mm		 7.10
mm		 N/A
  KFS2-M5-1-ZI-U M5 x 0.8 1.53
mm		 3.10
mm		 8.00
mm		 6.75
mm		 1.53
mm		 6.50
mm		 6.50
mm		 N/A
  KFS2-M5-1.5-ZI-U M5 x 0.8 1.53
mm		 3.00
mm		 9.53
mm		 7.37
mm		 1.53
mm		 6.90
mm		 6.90
mm		 N/A
  KFS2-M5-2-ZI-U M5 x 0.8 2.00
mm		 3.20
mm		 8.00
mm		 6.75
mm		 2.00
mm		 6.50
mm		 6.50
mm		 N/A
 
  KFS2-M6-1-ZI-U M6 x 1.0 1.53
mm		 4.10
mm		 10.00
mm		 8.30
mm		 1.53
mm		 8.00
mm		 8.00
mm		 N/A
  KFS2-M6-2-ZI-U M6 x 1.0 2.00
mm		 3.20
mm		 10.00
mm		 8.25
mm		 2.00
mm		 8.00
mm		 8.00
mm		 N/A
 
  KFS2-M8-1.25-ZI-U M8 x 1.25 2.00
mm		 4.70
mm		 13.00
mm		 10.30
mm		 2.00
mm		 10.00
mm		 10.00
mm		 N/A
 
  KFS2-M10-1.5-ZI-U M10 x 1.5 2.00
mm		 6.20
mm		 15.00
mm		 12.85
mm		 2.00
mm		 12.50
mm		 12.50
mm		 N/A

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