Slotted Flat Countersunk Head Cap Screws



Slotted Flat Head Cap Screw image
Nominal Size
or
Basic Screw
Diameter
F A H J T R C B
Body
Diameter
Head
Diameter
Head
Height
Slot Width Slot Depth Fillet
Radius
Protrusion
Above Gaging
Diameter
Gaging
Dia
Max Min Max
Edge
Sharp
Min Edge
Rounded
or Flat
Ref Max Min Max Min Max Max Min
1/2 .500 .5000 .4930 .875 .791 .210 .106 .091 .103 .068 .200 .071 .049 .756
5/8 .6250 .6250 .6170 1.125 1.020 .281 .133 .116 .137 .091 .250 .085 .058 .982
3/4 .7500 .7500 .7420 1.375 1.251 .352 .149 .131 .171 .115 .300 .099 .068 1.208


Nominal Screw Size Nominal Screw Length
Up to 1 inch, Incl Over 1 to 2-1/2, Incl Over 2-1/2 to 6 inch, Incl
1/2 thru 3/4 -.03 -.06 -.08
Thread length of full form thread shall be equal to ((2 x Basic Screw Dia) + .25)
With a tolerance of +.188 inch


Mechanical & Performance Data for Slotted Flat Countersunk Head Cap Screws


Description Countersunk screw with flat top surface, milled slot and a conical bearing surface with a head angle of 82 degrees.
Applications
and
Advantages
For assembling close tolerance machinery where head clearance is critical.
Material AISI 1006 - 1050 or equivalent steel
Core Hardness Rockwell B80 - B100
Tensile
Strength
74,000 psi minimum
Proof Load 55,000 psi minimum
Plating See plating page for plating information


See Also:
Flat Head Machine Screws



Smith Fastener Company • 3613 East Florence Avenue, Bell, California, 90201
Phone: ( 323 ) 587-0382 • FAX: ( 323 ) 587-8712 • E-mail: [email protected]
Copyright © 2009 by Smith Fastener Company

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