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Description : F-FH-Thread ø-Length-Finish : eg F-FH-M4-16-Z

Flush Head Clinch Studs install fully flush on the back of a panel so minimal surface finishing is needed after installation, and provide a strong torque resistance male thread in thin sheet material.

Available in Steel and Stainless Steel in thread sizes m2.5 to m8

Thread & Pitch Table
Thread & Pitch D ± 0.4 H Max Min Sheet Thickness Hole Size in Panel +0.08 -0.00 Max Mating Hole Min C/L to Edge of Panel
M2.5 x 0.45 4.1 1.95 1.00 2.50 3.10 5.40
M3 x 0.5 4.6 2.10 1.00 3.00 3.60 5.60
M3.5 x 0.6 5.3 2.25 1.00 3.50 4.10 6.40
M4 x 0.7 5.9 2.40 1.00 4.00 4.60 7.20
M5 x 0.8 6.5 2.70 1.00 5.00 5.60 7.20
M6 x 1.0 8.2 3.00 1.60 6.00 6.60 7.90
M8 x 1.25 9.6 3.70 2.40 8.00 8.60 9.60

Length Thread Size

Length (L) ± 0.4

M2.5 6 8 10 12 15
M3 6 8 10 12 15 18 20
M3.5 6 8 10 12 15 18 20 22
M4 6 8 10 12 15 18 20 22 25
M5 8 10 12 15 18 20 22 25 28
M6 10 12 15 18 20 22 25 28 30 35
M8 10 12 15 18 20 22 25 28 30 35 38

Finishes Part Number Examples Materials Limitations

Bright Zinc / Trivalent Clear Passivate (ZI) Other finishes available to order

Type|Thread|Length|Finish

i.e. : F-FH-M4-16-Z-ZI

(Flush Head Stud - M4 x 16mm - Steel - BZP)

i.e. : F-FHS-M4-16-A2

(Flush Head Stud - M4 x 16mm - Stainless)

Carbon Steel (X)

300 Series Stainless Steel (A2)

The following installation panel material hardness limitations apply when installing Self Clinching Studs.

Steel High Strength Studs: 85HRB Max 300 series Stainless High Strength Studs: 70HRB Max

Flush head studs use a flat top punch and a tapered anvil for material up to 1.5mm and a flat bottom anvil for material 1.51 mm to 2.4mm

Tooling for material berween1.51mm and 2.4mm
Tooling Guide 1.51 to 2.4mm Toolupto1_5mm.png

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