PF51M PF51MLS PF51ML Spring Loaded Low Profile Knob Anti Cross Thread Panel Fasteners

973-674-1700Standoffs, Spacers, Captive, Swage, Male Female Standoffs, Jack Screws, Male Male Standoffs, Handles, Thumb Screws, Thumbscrews, Shoulder Screws, Insulating Washers, Electronic Hardware.

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Spring-Loaded Low-Profile
Knob Anti-Cross Thread Panel Fasteners
PF51M-U, PF51MLS-U, PF51ML-U

Self Clinching Fasteners • Captive Panel Screws & Hardware
American Standard (Inches) & Metric Sizes

UNICORP Electronic Hardware Self-Clinching Fasteners - Spring-Loaded Low-Profile Anti-Cross Thread Panel Fasteners PF51M, PF51MLS, PF51ML

• Self-clinching • Low-profile • Anti-Cross Thread • Positive stop • Phillips head or Torx® • Held captive to a panel
• Installed by tool or hand • Shouldered retainer • Installed quickly and easily

American Standard Sizes: • Series PF51M-U • Series PF51MLS-U • Series PF51ML-U

Metric Sizes: • Series PF51M-U • Series PF51MLS-U • Series PF51ML-U

Series PF51M-U

Series PF51M-U / American Standard Sizes
• Type- Knurled Cap • "A" (Shank) Max.- 0.038" • Min. Sheet Thickness- 0.040" • Sheet Hardness- HRB 60 / HB 107 or Less • Retainer Material- Carbon Steel • Screw Material- Heat-Treated Carbon Steel • Spring Material- 300 Series Stainless Steel • Mil-Spec- N/A STANDARD FINISH (Part Numbers with "BN") • Retainer Finish- Black Nitride • Screw Finish- Black Nitride OPTIONAL FINISH (Part Numbers with "CN") • Retainer Finish- Bright nickel over copper flash per ASTM B689 • Screw Finish- Bright nickel over copper flash per ASTM B689
	Series PF51M-U American Standard Sizes (SAE)

Part
Number

Thread

"C"
Max.

"E"

"G"
Screw
Length

"H"

"P"

"T1"
Max.

"T2"
Nom.

Driver
Type

Hole
in Sheet

Min.
Distance
to Edge

PF51M-440-0-BN-U

4-40

0.202"

0.406"

0.230"

0.207"

0.000"

0.340"

0.520"

#1 Phillips

0.203"

0.260"

PF51M-440-1-BN-U

4-40

0.202"

0.406"

0.290"

0.207"

0.060"

0.340"

0.520"

#1 Phillips

0.203"

0.260"

PF51M-632-0-BN-U

6-32

0.218"

0.438"

0.230"

0.207"

0.000"

0.340"

0.520"

#2 Phillips

0.219"

0.280"

PF51M-632-1-BN-U

6-32

0.218"

0.438"

0.290"

0.207"

0.060"

0.340"

0.520"

#2 Phillips

0.219"

0.280"

PF51M-832-0-BN-U

8-32

0.249"

0.468"

0.230"

0.217"

0.000"

0.340"

0.520"

#2 Phillips

0.250"

0.290"

PF51M-832-1-BN-U

8-32

0.249"

0.468"

0.290"

0.217"

0.060"

0.340"

0.520"

#2 Phillips

0.250"

0.290"

PF51M-032-0-BN-U

10-32

0.311"

0.530"

0.230"

0.225"

0.000"

0.340"

0.530"

#2 Phillips

0.312"

0.330"

PF51M-032-1-BN-U

10-32

0.311"

0.530"

0.290"

0.225"

0.060"

0.340"

0.530"

#2 Phillips

0.312"

0.330"

PF51M-440-0-CN-U

4-40

0.202"

0.406"

0.230"

0.207"

0.000"

0.340"

0.520"

#1 Phillips

0.203"

0.260"

PF51M-440-1-CN-U

4-40

0.202"

0.406"

0.290"

0.207"

0.060"

0.340"

0.520"

#1 Phillips

0.203"

0.260"

PF51M-632-0-CN-U

6-32

0.218"

0.438"

0.230"

0.207"

0.000"

0.340"

0.520"

#2 Phillips

0.219"

0.280"

PF51M-632-1-CN-U

6-32

0.218"

0.438"

0.290"

0.207"

0.060"

0.340"

0.520"

#2 Phillips

0.219"

0.280"

PF51M-832-0-CN-U

8-32

0.249"

0.468"

0.230"

0.217"

0.000"

0.340"

0.520"

#2 Phillips

0.250"

0.290"

PF51M-832-1-CN-U

8-32

0.249"

0.468"

0.290"

0.217"

0.060"

0.340"

0.520"

#2 Phillips

0.250"

0.290"

PF51M-032-0-CN-U

10-32

0.311"

0.530"

0.230"

0.225"

0.000"

0.340"

0.530"

#2 Phillips

0.312"

0.330"

PF51M-032-1-CN-U

10-32

0.311"

0.530"

0.290"

0.225"

0.060"

0.340"

0.530"

#2 Phillips

0.312"

0.330"

Series PF51M-U / Metric Sizes
• Type- Knurled Cap • "A" (Shank) Max.- 0.97 mm • Min. Sheet Thickness- 1.00 mm • Sheet Hardness- HRB 60 / HB 107 or Less • Retainer Material- Carbon Steel • Screw Material- Heat-Treated Carbon Steel • Spring Material- 300 Series Stainless Steel • Mil-Spec- N/A STANDARD FINISH (Part Numbers with "BN") • Retainer Finish- Black Nitride • Screw Finish- Black Nitride OPTIONAL FINISH (Part Numbers with "CN") • Retainer Finish- Bright nickel over copper flash per ASTM B689 • Screw Finish- Bright nickel over copper flash per ASTM B689
	Series PF51M-U Metric Sizes

Part
Number

Thread

"C"
Max.

"E"

"G"
Screw
Length

"H"

"P"

"T1"
Max.

"T2"
Nom.

Driver
Type

Hole
in Sheet

Min.
Distance
to Edge

PF51M-M3-0-BN-U

M3 x 0.5

5.48
mm

10.30
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

#1 Phillips

5.50
mm

6.60
mm

PF51M-M3-1-BN-U

M3 x 0.5

5.48
mm

10.30
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

#1 Phillips

5.50
mm

6.60
mm

PF51M-M3.5-0-BN-U

M3.5 x 0.6

5.54
mm

11.10
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

#2 Phillips

5.56
mm

7.10
mm

PF51M-M3.5-1-BN-U

M3.5 x 0.6

5.54
mm

11.10
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

#2 Phillips

5.56
mm

7.10
mm

PF51M-M4-0-BN-U

M4 x 0.7

6.38
mm

11.90
mm

5.84
mm

5.51
mm

0.00
mm

8.64
mm

13.46
mm

#2 Phillips

6.40
mm

7.40
mm

PF51M-M4-1-BN-U

M4 x 0.7

6.38
mm

11.90
mm

7.37
mm

5.51
mm

1.32
mm

8.64
mm

13.46
mm

#2 Phillips

6.40
mm

7.40
mm

PF51M-M5-0-BN-U

M5 x 0.8

7.98
mm

13.50
mm

5.84
mm

5.72
mm

0.00
mm

8.64
mm

13.46
mm

#2 Phillips

8.00
mm

8.40
mm

PF51M-M5-1-BN-U

M5 x 0.8

7.98
mm

13.50
mm

7.37
mm

5.72
mm

1.32
mm

8.64
mm

13.46
mm

#2 Phillips

8.00
mm

8.40
mm

PF51M-M3-0-CN-U

M3 x 0.5

5.48
mm

10.30
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

#1 Phillips

5.50
mm

6.60
mm

PF51M-M3-1-CN-U

M3 x 0.5

5.48
mm

10.30
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

#1 Phillips

5.50
mm

6.60
mm

PF51M-M3.5-0-CN-U

M3.5 x 0.6

5.54
mm

11.10
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

#2 Phillips

5.56
mm

7.10
mm

PF51M-M3.5-1-CN-U

M3.5 x 0.6

5.54
mm

11.10
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

#2 Phillips

5.56
mm

7.10
mm

PF51M-M4-0-CN-U

M4 x 0.7

6.38
mm

11.90
mm

5.84
mm

5.51
mm

0.00
mm

8.64
mm

13.46
mm

#2 Phillips

6.40
mm

7.40
mm

PF51M-M4-1-CN-U

M4 x 0.7

6.38
mm

11.90
mm

7.37
mm

5.51
mm

1.32
mm

8.64
mm

13.46
mm

#2 Phillips

6.40
mm

7.40
mm

PF51M-M5-0-CN-U

M5 x 0.8

7.98
mm

13.50
mm

5.84
mm

5.72
mm

0.00
mm

8.64
mm

13.46
mm

#2 Phillips

8.00
mm

8.40
mm

PF51M-M5-1-CN-U

M5 x 0.8

7.98
mm

13.50
mm

7.37
mm

5.72
mm

1.32
mm

8.64
mm

13.46
mm

#2 Phillips

8.00
mm

8.40
mm

Series PF51MLS-U

Series PF51MLS-U / American Standard Sizes
• Type- Knurled Cap • "A" (Shank) Max.- 0.038" • Min. Sheet Thickness- 0.040" • Sheet Hardness- HRB 60 / HB 107 or Less • Retainer Material- Carbon Steel • Screw Material- Heat-Treated Carbon Steel • Spring Material- 300 Series Stainless Steel • Mil-Spec- N/A STANDARD FINISH (Part Numbers with "BN") • Retainer Finish- Black Nitride • Screw Finish- Black Nitride OPTIONAL FINISH (Part Numbers with "CN") • Retainer Finish- Bright nickel over copper flash per ASTM B689 • Screw Finish- Bright nickel over copper flash per ASTM B689
	Series PF51MLS-U American Standard Sizes (SAE)

Part
Number

Thread

"C"
Max.

"E"

"G"
Screw
Length

"H"

"P"

"T1"
Max.

"T2"
Nom.

Driver
Type

Hole
in Sheet

Min.
Distance
to Edge

PF51MLS-440-0-BN-U

4-40

0.202"

0.406"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/Slot Combination

0.203"

0.260"

PF51MLS-440-1-BN-U

4-40

0.202"

0.406"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/Slot Combination

0.203"

0.260"

PF51MLS-632-0-BN-U

6-32

0.218"

0.438"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/Slot Combination

0.219"

0.280"

PF51MLS-632-1-BN-U

6-32

0.218"

0.438"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/Slot Combination

0.219"

0.280"

PF51MLS-832-0-BN-U

8-32

0.249"

0.468"

0.230"

0.217"

0.000"

0.340"

0.520"

Torx®/Slot Combination

0.250"

0.290"

PF51MLS-832-1-BN-U

8-32

0.249"

0.468"

0.290"

0.217"

0.060"

0.340"

0.520"

Torx®/Slot Combination

0.250"

0.290"

PF51MLS-032-0-BN-U

10-32

0.311"

0.530"

0.230"

0.225"

0.000"

0.340"

0.530"

Torx®/Slot Combination

0.312"

0.330"

PF51MLS-032-1-BN-U

10-32

0.311"

0.530"

0.290"

0.225"

0.060"

0.340"

0.530"

Torx®/Slot Combination

0.312"

0.330"

PF51MLS-440-0-CN-U

4-40

0.202"

0.406"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/Slot Combination

0.203"

0.260"

PF51MLS-440-1-CN-U

4-40

0.202"

0.406"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/Slot Combination

0.203"

0.260"

PF51MLS-632-0-CN-U

6-32

0.218"

0.438"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/Slot Combination

0.219"

0.280"

PF51MLS-632-1-CN-U

6-32

0.218"

0.438"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/Slot Combination

0.219"

0.280"

PF51MLS-832-0-CN-U

8-32

0.249"

0.468"

0.230"

0.217"

0.000"

0.340"

0.520"

Torx®/Slot Combination

0.250"

0.290"

PF51MLS-832-1-CN-U

8-32

0.249"

0.468"

0.290"

0.217"

0.060"

0.340"

0.520"

Torx®/Slot Combination

0.250"

0.290"

PF51MLS-032-0-CN-U

10-32

0.311"

0.530"

0.230"

0.225"

0.000"

0.340"

0.530"

Torx®/Slot Combination

0.312"

0.330"

PF51MLS-032-1-CN-U

10-32

0.311"

0.530"

0.290"

0.225"

0.060"

0.340"

0.530"

Torx®/Slot Combination

0.312"

0.330"

Series PF51MLS-U / Metric Sizes
• Type- Knurled Cap • "A" (Shank) Max.- 0.97 mm • Min. Sheet Thickness- 1.00 mm • Sheet Hardness- HRB 60 / HB 107 or Less • Retainer Material- Carbon Steel • Screw Material- Heat-Treated Carbon Steel • Spring Material- 300 Series Stainless Steel • Mil-Spec- N/A STANDARD FINISH (Part Numbers with "BN") • Retainer Finish- Black Nitride • Screw Finish- Black Nitride OPTIONAL FINISH (Part Numbers with "CN") • Retainer Finish- Bright nickel over copper flash per ASTM B689 • Screw Finish- Bright nickel over copper flash per ASTM B689
	Series PF51MLS-U Metric Sizes

Part
Number

Thread

"C"
Max.

"E"

"G"
Screw
Length

"H"

"P"

"T1"
Max.

"T2"
Nom.

Driver
Type

Hole
in Sheet

Min.
Distance
to Edge

PF51MLS-M3-0-BN-U

M3 x 0.5

5.48
mm

10.30
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.50
mm

6.60
mm

PF51MLS-M3-1-BN-U

M3 x 0.5

5.48
mm

10.30
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.50
mm

6.60
mm

PF51MLS-M3.5-0-BN-U

M3.5 x 0.6

5.54
mm

11.10
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.56
mm

7.10
mm

PF51MLS-M3.5-1-BN-U

M3.5 x 0.6

5.54
mm

11.10
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.56
mm

7.10
mm

PF51MLS-M4-0-BN-U

M4 x 0.7

6.38
mm

11.90
mm

5.84
mm

5.51
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

6.40
mm

7.40
mm

PF51MLS-M4-1-BN-U

M4 x 0.7

6.38
mm

11.90
mm

7.37
mm

5.51
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

6.40
mm

7.40
mm

PF51MLS-M5-0-BN-U

M5 x 0.8

7.98
mm

13.50
mm

5.84
mm

5.72
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

8.00
mm

8.40
mm

PF51MLS-M5-1-BN-U

M5 x 0.8

7.98
mm

13.50
mm

7.37
mm

5.72
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

8.00
mm

8.40
mm

PF51MLS-M3-0-CN-U

M3 x 0.5

5.48
mm

10.30
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.50
mm

6.60
mm

PF51MLS-M3-1-CN-U

M3 x 0.5

5.48
mm

10.30
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.50
mm

6.60
mm

PF51MLS-M3.5-0-CN-U

M3.5 x 0.6

5.54
mm

11.10
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.56
mm

7.10
mm

PF51MLS-M3.5-1-CN-U

M3.5 x 0.6

5.54
mm

11.10
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/Slot Combination

5.56
mm

7.10
mm

PF51MLS-M4-0-CN-U

M4 x 0.7

6.38
mm

11.90
mm

5.84
mm

5.51
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

6.40
mm

7.40
mm

PF51MLS-M4-1-CN-U

M4 x 0.7

6.38
mm

11.90
mm

7.37
mm

5.51
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

6.40
mm

7.40
mm

PF51MLS-M5-0-CN-U

M5 x 0.8

7.98
mm

13.50
mm

5.84
mm

5.72
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

8.00
mm

8.40
mm

PF51MLS-M5-1-CN-U

M5 x 0.8

7.98
mm

13.50
mm

7.37
mm

5.72
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/Slot Combination

8.00
mm

8.40
mm

Series PF51ML-U

Series PF51ML-U / American Standard Sizes
• Type- Knurled Cap • "A" (Shank) Max.- 0.038" • Min. Sheet Thickness- 0.040" • Sheet Hardness- HRB 60 / HB 107 or Less • Retainer Material- Carbon Steel • Screw Material- Heat-Treated Carbon Steel • Spring Material- 300 Series Stainless Steel • Mil-Spec- N/A STANDARD FINISH (Part Numbers with "BN") • Retainer Finish- Black Nitride • Screw Finish- Black Nitride OPTIONAL FINISH (Part Numbers with "CN") • Retainer Finish- Bright nickel over copper flash per ASTM B689 • Screw Finish- Bright nickel over copper flash per ASTM B689
	Series PF51ML-U American Standard Sizes (SAE)

Part
Number

Thread

"C"
Max.

"E"

"G"
Screw
Length

"H"

"P"

"T1"
Max.

"T2"
Nom.

Driver
Type

Hole
in Sheet

Min.
Distance
to Edge

PF51ML-440-0-BN-U

4-40

0.202"

0.406"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/
Torx Plus®

0.203"

0.260"

PF51ML-440-1-BN-U

4-40

0.202"

0.406"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/
Torx Plus®

0.203"

0.260"

PF51ML-632-0-BN-U

6-32

0.218"

0.438"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/
Torx Plus®

0.219"

0.280"

PF51ML-632-1-BN-U

6-32

0.218"

0.438"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/
Torx Plus®

0.219"

0.280"

PF51ML-832-0-BN-U

8-32

0.249"

0.468"

0.230"

0.217"

0.000"

0.340"

0.520"

Torx®/
Torx Plus®

0.250"

0.290"

PF51ML-832-1-BN-U

8-32

0.249"

0.468"

0.290"

0.217"

0.060"

0.340"

0.520"

Torx®/
Torx Plus®

0.250"

0.290"

PF51ML-032-0-BN-U

10-32

0.311"

0.530"

0.230"

0.225"

0.000"

0.340"

0.530"

Torx®/
Torx Plus®

0.312"

0.330"

PF51ML-032-1-BN-U

10-32

0.311"

0.530"

0.290"

0.225"

0.060"

0.340"

0.530"

Torx®/
Torx Plus®

0.312"

0.330"

PF51ML-440-0-CN-U

4-40

0.202"

0.406"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/
Torx Plus®

0.203"

0.260"

PF51ML-440-1-CN-U

4-40

0.202"

0.406"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/
Torx Plus®

0.203"

0.260"

PF51ML-632-0-CN-U

6-32

0.218"

0.438"

0.230"

0.207"

0.000"

0.340"

0.520"

Torx®/
Torx Plus®

0.219"

0.280"

PF51ML-632-1-CN-U

6-32

0.218"

0.438"

0.290"

0.207"

0.060"

0.340"

0.520"

Torx®/
Torx Plus®

0.219"

0.280"

PF51ML-832-0-CN-U

8-32

0.249"

0.468"

0.230"

0.217"

0.000"

0.340"

0.520"

Torx®/
Torx Plus®

0.250"

0.290"

PF51ML-832-1-CN-U

8-32

0.249"

0.468"

0.290"

0.217"

0.060"

0.340"

0.520"

Torx®/
Torx Plus®

0.250"

0.290"

PF51ML-032-0-CN-U

10-32

0.311"

0.530"

0.230"

0.225"

0.000"

0.340"

0.530"

Torx®/
Torx Plus®

0.312"

0.330"

PF51ML-032-1-CN-U

10-32

0.311"

0.530"

0.290"

0.225"

0.060"

0.340"

0.530"

Torx®/
Torx Plus®

0.312"

0.330"

Series PF51ML-U / Metric Sizes
• Type- Knurled Cap • "A" (Shank) Max.- 0.97 mm • Min. Sheet Thickness- 1.00 mm • Sheet Hardness- HRB 60 / HB 107 or Less • Retainer Material- Carbon Steel • Screw Material- Heat-Treated Carbon Steel • Spring Material- 300 Series Stainless Steel • Mil-Spec- N/A STANDARD FINISH (Part Numbers with "BN") • Retainer Finish- Black Nitride • Screw Finish- Black Nitride OPTIONAL FINISH (Part Numbers with "CN") • Retainer Finish- Bright nickel over copper flash per ASTM B689 • Screw Finish- Bright nickel over copper flash per ASTM B689
	Series PF51ML-U Metric Sizes

Part
Number

Thread

"C"
Max.

"E"

"G"
Screw
Length

"H"

"P"

"T1"
Max.

"T2"
Nom.

Driver
Type

Hole
in Sheet

Min.
Distance
to Edge

PF51ML-M3-0-BN-U

M3 x 0.5

5.48
mm

10.30
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.50
mm

6.60
mm

PF51ML-M3-1-BN-U

M3 x 0.5

5.48
mm

10.30
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.50
mm

6.60
mm

PF51ML-M3.5-0-BN-U

M3.5 x 0.6

5.54
mm

11.10
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.56
mm

7.10
mm

PF51ML-M3.5-1-BN-U

M3.5 x 0.6

5.54
mm

11.10
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.56
mm

7.10
mm

PF51ML-M4-0-BN-U

M4 x 0.7

6.38
mm

11.90
mm

5.84
mm

5.51
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

6.40
mm

7.40
mm

PF51ML-M4-1-BN-U

M4 x 0.7

6.38
mm

11.90
mm

7.37
mm

5.51
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

6.40
mm

7.40
mm

PF51ML-M5-0-BN-U

M5 x 0.8

7.98
mm

13.50
mm

5.84
mm

5.72
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

8.00
mm

8.40
mm

PF51ML-M5-1-BN-U

M5 x 0.8

7.98
mm

13.50
mm

7.37
mm

5.72
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

8.00
mm

8.40
mm

PF51ML-M3-0-CN-U

M3 x 0.5

5.48
mm

10.30
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.50
mm

6.60
mm

PF51ML-M3-1-CN-U

M3 x 0.5

5.48
mm

10.30
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.50
mm

6.60
mm

PF51ML-M3.5-0-CN-U

M3.5 x 0.6

5.54
mm

11.10
mm

5.84
mm

5.26
mm

0.00
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.56
mm

7.10
mm

PF51ML-M3.5-1-CN-U

M3.5 x 0.6

5.54
mm

11.10
mm

7.37
mm

5.26
mm

1.32
mm

8.64
mm

13.21
mm

Torx®/
Torx Plus®

5.56
mm

7.10
mm

PF51ML-M4-0-CN-U

M4 x 0.7

6.38
mm

11.90
mm

5.84
mm

5.51
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

6.40
mm

7.40
mm

PF51ML-M4-1-CN-U

M4 x 0.7

6.38
mm

11.90
mm

7.37
mm

5.51
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

6.40
mm

7.40
mm

PF51ML-M5-0-CN-U

M5 x 0.8

7.98
mm

13.50
mm

5.84
mm

5.72
mm

0.00
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

8.00
mm

8.40
mm

PF51ML-M5-1-CN-U

M5 x 0.8

7.98
mm

13.50
mm

7.37
mm

5.72
mm

1.32
mm

8.64
mm

13.46
mm

Torx®/
Torx Plus®

8.00
mm

8.40
mm

More Selections Spring Loaded Low-Profile Knob Anti-Cross Thread Panel Fasteners
American Standard:		Metric:	American Standard:		Metric:
	•Series PF50M-U •Series PF50MLS-U •Series PF50ML-U	•Series PF50M-U •Series PF50MLS-U •Series PF50ML-U		•Series PF60M-U •Series PF60MLS-U •Series PF60ML-U	•Series PF60M-U •Series PF60MLS-U •Series PF60ML-U

				•Series PF61M-U •Series PF61MLS-U •Series PF61ML-U	•Series PF61M-U •Series PF61MLS-U •Series PF61ML-U

	•Series PF52M-U •Series PF52MLS-U •Series PF52ML-U	•Series PF52M-U •Series PF52MLS-U •Series PF52ML-U		•Series PF62M-U •Series PF62MLS-U •Series PF62ML-U	•Series PF62M-U •Series PF62MLS-U •Series PF62ML-U

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UNICORP is a leader in manufacturing stock and custom
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in nearly every industry since 1971.

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