Hexagon Head Bolts, Screws
Socket Head Cap Screws
Socket Button Head Cap Screws
Socket Countersunk Head Screw
Socket Set Screws
Hex Nut
Special Fasteners
 
 
Socket Countersunk Head Screws Metric Series - Dimensions
Note:
  1. The screws will generally conforms to IS : 2269, ISO 4762, and DIN 912.
  2. Threads will confirm to class 4g6g of IS : 4218, Coarse Series.
  3. Material : Mita High Grade Alloy Steel.
  4. Heat Treatment : HRC 38 - 44.
  5. Propety Class : 12.9.
  6. Sizes in brackets are non-preferred standards.
  7. All dimensions are in millimeters.
 
 
Thread Size Pitch A Max F Min. H Ref. R Ref. W Nom. L Max.
M3 0.50 6.0 1.05 1.7 0.50 2.0 30
M4 0.70 8.0 1.49 2.3 0.70 2.5 30
M5 0.80 10.0 1.86 2.8 0.70 3.0 35
M6 1.00 12.0 2.16 3.3 0.85 4.0 40
M8 1.25 16.0 2.85 4.4 1.20 5.0 45
M10 1.50 20.0 3.60 5.5 1.50 6.0 55
M12 1.75 24.0 4.30 6.5 1.85 8.0 60
M16 2.00 30.0 4.89 7.5 1.85 10.0 70
M20 2.50 36.0 5.60 8.5 1.85 12.0 100
Physical Properties
Ultimate Tensile Strength, Min. 1,050 N/mm2 107 kgf/mm2
Yield strength, 0.2% offset, Min. 945 N/mm2 96.3 kgf/mm2
Shear strength, Min. 630 N/mm2 64.2 kgf/mm2
Elongation % on GL = 5.65
Where A = Cross sectional area
9% mm2 9% Min.
 
Socket Countersunk Head Screws Inch Series - Dimensions
Thread Size T.P.I. A Max F Min. H Min. R Ref. W Nom. L Max.
BSW BSF
3/16 24 32 0.356 0.065 0.085 0.025 3/32 1
1/4 20 26 0.475 0.085 0.113 0.025 5/32 1 1/4
5/16 18 22 0.594 0.105 0.142 0.025 3/16 1 1/4
 
Physical Properties
Ultimate Tensile Strength, Min. 1,60,000 lbf/in2
Yield strength, 0.2% offset, Min. 1,44,000 lbf/in2
Shear strength, Min. 96,000 lbf/in2
Elongation % on GL = 5.65
Where A = Cross sectional area
9% Min.
 
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