Grey Bar

Self Clinching Studs Design Specification

GENERAL SIZES
  • - Steel & 300 Series Stainless Steel - Metric Sizes
    • Thread Size ISO Metric Head Diameter  +/- 0.4 (mm) Minimum Sheet Thickness  (mm) Recomm-ended Hole Size  +0.08 -0.00 (mm) Maximum Hole Size in Mating Part (mm) Minimum Clearance from Centre Line to Sheet Edge (mm) Maximum Recomm-ended Nut Tightening Torque  (Nm)
    3

    4.6

    		 1.00 3.00 3.60 5.5 0.76
    4 5.9 1.00 4.00 4.60 7.5 1.80
    5 6.5 1.30 5.00 5.60 7.5 3.60
    6 8.2 1.60 6.00 6.60 8.0 6.10
    8 9.6 2.40 8.00 8.60 9.5 14.70
    10 12.5 2.40 10.00 10.60 11.5 29.10

    N.B. Maximum Tightening Torque applies to Steel Studs only for Aluminium use approximately 60% of these values.

  • - Steel & 300 Series Stainless Steel - Unified Sizes
    • Thread Size Unified Course Head Diameter  +/- 0.015 (ins) Minimum Sheet Thickness  (ins) Recommended Hole Size  +0.003             -0.000 (ins) Maximum Hole Size in Mating Part (ins) Minimum Clearance from Centre Line to Sheet Edge (ins) Maximum Tightening Torque 
    (in lbs)
    8-32 6.42 0.039 0.163 0.185 0.295 17.20
    10-24 6.50 0.039 0.189 0.210 0.295 24.00
    1/4-20 8.56 0.063 0.249 0.270 0.315 58.00
    5/16-18 9.55 0.094 0.311 0.333 0.375 115.00

    N.B. Maximum Tightening Torque applies to Steel Studs only for Aluminium use approximately 60% of these values.

  • - Non Flush Head - Steel & 300 Series Stainless Steel - Metric
    • Thread Size ISO Metric Head Diameter  +/- 0.4(mm) Max Head Height (mm) Minimum Sheet Thickness  (mm) Recomm-
    ended Hole Size  +0.13 -0.00 (mm)     		Clearance Hole Size in Mating Part   (mm) Minimum Clearance from Centre Line to Sheet Edge (mm) Maximum Recommended Nut Tightening Torque (Nm)
    4 6.16 1.00 1.0 4.00 5.00 8.00 3.50
    5 7.80 1.14 1.2 5.00 6.50 10.70 4.40
    6 9.40 1.27 1.5 6.00 7.50 11.50 10.00
    8 12.50 1.78 2.0 8.00 9.50 12.70 22.00
    10 15.70 2.30 2.4 10.00 11.50 13.70 37.00
  • High Strength - Non Flush Head - Steel & 300 Series Stainless Steel - Unified
400 SERIES STAINLESS STEEL STUDS
  • - General Sizes

    • The 400 Series Stainless Steel Stud is designed for installation into Stainless Steel Sheets of hardness is 92 HRB Maximum.
    Thread Size ISO Metric Head Diameter  +/- 0.4 (mm) Minimum Sheet Thickness  (mm) Recommended Hole Size  +0.08 -0.00 (mm) Maximum Hole Size in Mating Part (mm) Minimum Clearance from Centre Line to Sheet Edge (mm) Maximum Recommended Nut Tightening Torque  (Nm)
    3

    4.6

    		 1.00 3.00 3.60 5.5 0.86
    4 5.9 1.00 4.00 4.60 7.5 2.00
    5 6.5 1.30 5.00 5.60 7.5 4.20
    6 8.2 1.60 6.00 6.60 8.0 7.00


    In order that this fastener functions properly it is essential that the fastener is harder than the stainless steel sheet therefore the following precautions should be adhered to:-
    • Do not exceed the maximum sheet hardness of 92 HRB.
    • Keep hole punch tooling as sharp as possible to minimise work hardening around the hole.
    • Avoid installing the fastener in or near cold worked areas where the local sheet hardness may exceed 92HRB.
    • The fastener should be installed in the punch side of the hole.
    • Refer to Assembly Guide.
PERFORMANCE CHARACTERISTICS

    • Performance Data
    The performance data listed relates only to the holding power of the stud to the sheet into which it is installed they do no relate to the axial strength of the threads, allowable tightening torque or design loading of an assembly. The values represented here are the anticipated destructive averages when the proper installation procedures and specifications have been applied.

    Push Out Load
    This represents the resistance of the clinch stud to an axial load applied to the fastener forcing the stud from the sheet into which it had been installed.

    Torque Out
    This represents the resistance of the clinch stud to turning within the sheet into which it has been installed.

    Torque Through
    This represents the resistance of the stud to an axial load applied against the head tending to pull the clinch stud through the sheet into which it has been installed.

  • - Steel only - Metric Sizes
    • Thread Size ISO Metric Max Tightening Torque (Nm) Sheet Thickness &  Sheet Material Test Sheet Hardness  (VPN) Min Sheet Thickness Installation Load  (KN) Pushout Load (N) Torque Out (Nm) Torque Through (Nm) Torque Through Hole Dia. (mm)

    Max. Sheet Hardness (VPN)
    3 0.76 1.6  Alum 80 1.0 11.2 900 1.25 1.95 3.58
    1.5  Steel 110 150 15.6 1296 1.50 2.50 3.58
    4 1.80 1.6  Alum 80 1.0 20.0 1320 4.70 5.80 4.45
    1.5  Steel 110 150 26.7 1870 5.50 7.50 4.45
    5 3.60 1.6  Alum 80 1.3 24.5 1600 6.00 8.00 5.59
    1.5  Steel 110 150 29.0 2431 7.50 12.00 5.59
    6 6.10 2.4  Alum 80 1.6 25.0 1900 10.00 16.00 6.60
    2.4  Steel 85 150 42.0 3366 16.00 18.00 6.60
    8 14.70 2.4  Alum 80 2.4 29.0 2500 21.00 19.00 8.46
    2.4  Steel 85 150 44.5 4488 24.00 28.00 8.46
    10 29.10 2.4  Alum 80 2.4         10.60
    2.4  Steel 85 150         10.60

    N.B. Maximum Tightening Torque applies to Steel Studs only for Aluminium use approximately 60% of these values.

  • - Steel only - Unified Sizes
    • Thread Size Unified Course Max Tightening Torque (Nm) Sheet Thickness &  Sheet Material Test Sheet Hardness  (VPN) Min Sheet Thickness Installation Load  (KN) Pushout Load (N) Torque Out (Nm) Torque Through (Nm) Torque Through Hole Dia. (mm)
    Max. Sheet Hardness (VPN)
    8-32 1.90 1.6  Alum 80 1.0 20.0 1300 4.60 5.70 4.57
    1.5  Steel 110 150 26.7 1870 5.50 7.50 4.57
    10-24 2.70 1.6  Alum 80 1.0 24.5 1600 5.70 8.00 5.33
    1.5  Steel 110 150 28.9 2431 7.50 16.00 5.33
    1/4-20 6.60 2.4  Alum 80 1.6 28.9 2300 13.00 10.50 7.24
    2.4  Steel 85 150 42.3 3366 16.00 18.00 7.24
    5/16-18 13.60 2.4  Alum 80 2.4 28.9 2250 20.00 18.50 8.46
    2.4  Steel 85 150 44.5 4488 24.00 28.00 8.46

    N.B. Maximum Tightening Torque applies to Steel Studs only for Aluminium use approximately 60% of these values.

  • - 400 Series - Metric Sizes
    • Thread Size ISO Metric Max Nut Tightening Torque (Nm)

    INSTALLED INTO 300 SERIES STAINLESS STEEL SHEET
    Installation Load (KN) Pushout Load (N) Torque Out (Nm) Torque Through (Nm)
    3 0.86 40 3300 1.80  
    4 2.00 50 4400 6.50  
    5 4.20 55 4900 10.70  

  • - Non Flush Head - Steel only - Metric Sizes
    • Thread Size ISO Metric Max Tightening Torque (Nm) Sheet Thickness &  Sheet Material Test Sheet Hardness  (VPN) Min Sheet Thickness Installation Load  (KN) Pushout Load (N) Torque Out (Nm) Torque Through (Nm) Torque Through Hole Dia. (mm)

    Max. Sheet Hardness (VPN)
    4 3.5 1.2  Alum 80 1.0 9 817 - - 5.50
    1.2  Steel 110 150 18 1420 - - 5.50
    5 4.4 1.5  Alum 80 1.2 13 1045 5.9 6.5 6.50
    1.5  Steel 110 150 26 1635 8.9 7.5 6.50
    6 10 1.5  Alum 80 1.5 29 1700 15.0 19.7 7.50
    1.5  Steel 110 150 33 2120 18.0 26.0 7.50
    8 22 2.4  Alum 80 2.0 36 1870 34.0 47.0 9.50
    2.4  Steel 110 150 44 2290 40.0 50.0 9.50
    10 37 2.4  Alum 80 2.4 40 2570 42.0 65.0 11.50
    2.4  Steel 110 150 54 4200 53.0 71.0 11.50

  • - Non Flush Head - Steel only - Unified Sizes
    • Thread Size ISO Metric Max Tightening Torque (Nm) Sheet Thickness &  Sheet Material Test Sheet Hardness  (VPN) Min Sheet Thickness Installation Load  (KN) Pushout Load (N) Torque Out (Nm) Torque Through (Nm) Torque Through Hole Dia. (mm)

    Max. Sheet Hardness (VPN)
    4 3.5 1.2  Alum 80 1.0 9 817 - - 5.50
    1.2  Steel 110 150 18 1420 - - 5.50
    5 4.4 1.5  Alum 80 1.2 13 1045 5.9 6.5 6.50
    1.5  Steel 110 150 26 1635 8.9 7.5 6.50
    6 10 1.5  Alum 80 1.5 29 1700 15.0 19.7 7.50
    1.5  Steel 110 150 33 2120 18.0 26.0 7.50
    8 22 2.4  Alum 80 2.0 36 1870 34.0 47.0 9.50
    2.4  Steel 110 150 44 2290 40.0 50.0 9.50
    10 37 2.4  Alum 80 2.4 40 2570 42.0 65.0 11.50
    2.4  Steel 110 150 54 4200 53.0 71.0 11.50