Specification Sheet

Page 1 of 1 REV-01
Date: January 21, 2011
Holo-Krome Product Standard
HK.USA.LHSCS.ALLOY.BO
Low Head Socket Cap Screws, Alloy, Black Oxide, Manufactured in the USA
The information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order. If
the order received does not meet these requirements, it may result in a supplier corrective action request, which could jeopardize your
status as an approved vendor. Unless otherwise specified, all referenced consensus standards must be adhered to in their entirety.
C T K
Max. Min. Max. Min. Max. Min. Max. Min. Max.
8 0.1640 0.1640 0.1585 0.270 0.265 0.085 0.079 0.014 5/64 0.078 0.060 0.008
10 0.1900 0.1900 0.1840 0.312 0.307 0.098 0.092 0.018 3/32 0.094 0.072 0.008
1/4 0.2500 0.2500 0.2435 0.375 0.369 0.127 0.121 0.025 1/8 0.125 0.094 0.010
5/16 0.3125 0.3125 0.3053 0.437 0.431 0.158 0.152 0.033 5/32 0.156 0.110 0.010
3/8 0.3750 0.3750 0.3678 0.562 0.556 0.192 0.182 0.040 3/16 0.188 0.115 0.010
1/2 0.5000 0.5000 0.4919 0.750 0.743 0.254 0.244 0.055 1/4 0.250 0.151 0.015
HAD
Chamfer or
Radius
Key
Engagement
Nom.
Nominal Size or
Basic Screw
Diameter
Hexagon Socket
Size
J
Chamfer or
Radius
Head HeightHead DiameterBody Diameter
Specification Requirements:
• Standard: ASME B18.3
• Thread requirements: ASME B1.1, Class 3A UNRC and UNRF (#8 to 1/2” inclusive)
• Material: ASTM A574
• Mechanical Properties: ASTM F835
• Finish Black Oxide (Thermal or Chemical).
• Material Test Reports: The MTR must have documented lot traceability, including full
chemical and mechanical figures, to the specification(s) above.