Countersunk Heads

These standards from ISO, SAE, and IFI cover standardized screw requirements sorted by head. This list covers countersunk head screw standards.

ISO 7721:1983

Countersunk head screws - Head configuration and gauging

Specifies the characteristics of products with thread sizes from M 1,6 up to and including M 20; it recommends a gauging method for the dimensions laid down in the respective product standards; the annex contains the calculation basis

ISO 7721-2:1990

Countersunk flat head screws - Part 2: Penetration depth of cross recesses

This part of ISO 7721 specifies the penetration depth of cross recesses of countersunk flat head screws for the two series 1 and 2 (deep and shallow, respectively).

ISO 7047:2011

Raised countersunk head screws (common head style) with type H or type Z cross recess - Product grade A

ISO 7047:2011 specifies the characteristics of countersunk raised head screws of product grade A, with threads from M1,6 to M10 inclusive and with type H or type Z cross recess.

ISO 2009:2011

Slotted countersunk flat head screws - Product grade A

ISO 2009:2011 specifies the characteristics of slotted countersunk flat head screws of product grade A and with threads from M1,6 to M10 inclusive.

ISO 2010:2011

Slotted raised countersunk head screws - Product grade A

ISO 2010:2011 specifies the characteristics of countersunk slotted raised head screws of product grade A and with threads from M1,6 to M10 inclusive.

ISO 1482:2011

Slotted countersunk (flat) head tapping screws

ISO 1482:2011 specifies the characteristics of slotted countersunk (flat) head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.

ISO 1483:2011

Slotted raised countersunk (oval) head tapping screws

ISO 1483:2011 specifies the characteristics of slotted raised countersunk (oval) head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.

ISO 15065:2005

Countersinks for countersunk head screws with head configuration in accordance with ISO 7721

ISO 15065:2005 specifies the dimensions and designation of countersinks for countersunk head screws with a head configuration in accordance with ISO 7721. It is applicable to the types of screws according to ISO 2009, ISO 2010, ISO 1482, ISO 1483, ISO 7046-1 and ISO 7046-2, ISO 7047, ISO 7050, ISO 7051, ISO 15482, ISO 15483, ISO 14584, ISO 14586, and ISO 14587.

ISO 7046-1:2011

Countersunk flat head screws (common head style) with type H or type Z cross recess - Product grade A - Part 1: Steel screws of property class 4.8

ISO 7046-1:2011 specifies the characteristics of countersunk flat head screws with threads from M1,6 to M10 inclusive, of product grade A and property class 4.8, and with type H or type Z cross recess.

ISO 7046-2:2011

Countersunk flat head screws (common head style) with type H or type Z cross recess - Product grade A - Part 2: Steel screws of property class 8.8, stainless steel screws and non-ferrous metal screws

ISO 7046-2:2011 specifies the characteristics of recessed countersunk flat head screws with threads M2 up to and including M10, of grade A and of property class 8.8 for steel, A2-70 for stainless steel and CU2 and CU3 for non-ferrous metals.

ISO 14584:2011

Hexalobular socket raised countersunk head screws

ISO 14584:2011 specifies the characteristics of hexalobular socket raised countersunk head screws of product grade A, and with thread sizes from M2 up to and including M10.

ISO 13921:2008

Aerospace - Screws, 100 degrees reduced countersunk head, internal offset cruciform ribbed or unribbed drive, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa - Dimensions

ISO 13921:2008 specifies the dimensions of 100° reduced countersunk head screws with internal offset cruciform ribbed or unribbed drive, with close or large tolerance normal shank and short or medium length MJ threads, in metallic material, coated or uncoated, with strength classes less than or equal to 1 100 MPa. ISO 13921:2008 is applicable to the compilation of aerospace product standards.

ISO 5856:2008

Aerospace - Screws, 100 degrees normal countersunk head, internal offset cruciform ribbed or unribbed drive, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa - Dimensions

ISO 5856:2008 specifies the dimensions of 100° normal countersunk head screws with internal offset cruciform ribbed or unribbed drive, with close or large tolerance normal shank and short or medium length MJ threads, in metallic material, coated or uncoated, with strength classes less than or equal to 1 100 MPa. ISO 5856:2008 is applicable to the compilation of aerospace product standards.