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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Round Head Bolts > Countersunk Bolts and Slotted Countersunk Bolts > Item # CBSCB02500XXX  
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Item # CBSCB02500XXX, Countersunk Bolt and Slotted Countersunk Bolt, with 0.260" Body Dia.


  • Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • Flat on minimum diameter head calculated on minimum sharp and absolute minimum head diameters and 82 deg head angle.
  • Head shall be unslotted, unless otherwise specified. Slot dimensions are same as Slotted Flat Countersunk Head Cap Screws in American National Standard, ASME B18.6.2.
  • Maximum head height calculated on maximum sharp head diameter, basic bolt diameter and 78 deg head angle.
  • Minimum head height calculated on minimum sharp head diameter, basic bolt diameter and 82 deg head angle.




Manufacturer  · Specifications  · Codes and Standards

Manufacturer

Manufacturer
Industrial Fasteners Institute


Specifications

Product
Round Head Bolts

Unit of Measure
English

Nominal Size or Basic Bolt Dia.
1/4 in

Nominal Size or Basic Bolt Dia. (Decimal)
0.2500 in

Max. Body Dia. (E)
0.260 in

Min. Body Dia. (E)
0.237 in

Max. Edge Sharp Head Dia. (A)
0.493 in

Min. Edge Sharp Head Dia. (A)
0.477 in

Absolute Min. Edge Rounded or Flat Head Dia. (A)
0.445 in

Max. Flat on Min. Dia. Head (F)
0.018 in

Max. Head Height (H)
0.150 in

Min. Head Height (H)
0.131 in

Max. Slot Width (J)
0.075 in

Min. Slot Width (J)
0.064 in

Max. Slot Depth (T)
0.068 in

Min. Slot Depth (T)
0.045 in


Codes and Standards

Codes and Standards
ASME B18.5 1990 (R1998)


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