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Standardized Heads for Screws and Bolts
These standards from ISO, SAE, and IFI cover standardized screw requirements sorted by head.
Back to fastener standards for screws, bolts, and studs Home
Hex Heads
Flat Fillister Heads
Oval Fillister Heads
Cheese Heads
Pan Heads
Countersunk Heads
Round Heads
DoubleHex Heads
Hex Heads
ISO 4017:2014
Fasteners - Hexagon head screws - Product grades A and B
ISO 4018:2011
Hexagon head screws - Product grade C
IFI-149:2002
Large Size Heavy Hex Screws
IFI-111:2002
Hex Flange Screws
ISO 10509:2012
Hexagon flange head tapping screws
ISO 1479:2011
Hexagon head tapping screws
ISO 15480:2019
Fasteners - Hexagon washer head drilling screws with tapping screw thread
ISO 7053:2019
Fasteners - Hexagon washer head tapping screws
SAE AS 3098A-2019
Screw, Machine - Hexagon Head, PD Shank, Cres AMS5731 (UNS S66286), .164-36 UNJF-3A
SAE AS 3106B-2020
SCREW, MACHINE - HEXAGON HEAD, DRILLED 1 HOLE, PD SHANK, CRES AMS5731(UNS S66286), .1640-36 UNJF-3A
SAE AS 9292C-2021
SCREW, MACHINE - HEXAGON HEAD, DRILLED 1 HOLE, PD SHANK, BLACK OXIDE, STEEL UNS G87400, 125 KSI MIN, .1380-40 UNJF-3A
SAE AS 9316B-2012 (SAE AS9316B-2012)
Screw, Machine - Hexagon Head, Slotted, Full Shank, Alloy Steel, UNS K14675, 135 KSI MIN, .1900-32 UNS-3A
SAE AS 9317E-2022
SCREW, MACHINE - HEXAGON HEAD, SLOTTED, FULL SHANK, ALLOY STEEL, UNS K14675, 135 KSI MIN, .2500-28 UNS-3A
SAE AS 9449C-2015 (SAE AS9449C-2015)
SCREW MACHINE - STEEL, DIFFUSED NICKEL-CADMIUM PLATED, HEXAGON HEAD UNS K14675, 195 KSI MIN, .1380-40 UNJF-3A (Stabilized: Jun 2015)
SAE AS 9450B-2015 (SAE AS9450B-2015)
SCREW, MACHINE - STEEL, DIFFUSED NICKEL-CADMIUM PLATED, HEXAGON HEAD, DRILLED, UNS K14675, 195 KSI MIN, .1640-36 UNJF-3A (Stabilized: Feb 2015)
SAE AS 9516C-2021
SCREW, MACHINE - STEEL, CADMIUM PLATED, HEXAGON HEAD, UNS G87400, 125 KSI MIN, .1380-40 UNJF-3A
SAE AS 9517B-2015 (SAE AS9517B-2015)
SCREW, MACHINE - STEEL, CADMIUM PLATED, HEXAGON HEAD, UNS G87400, 125 KSI MIN, .1640-36 UNJF-3A (Stabilized: Feb 2015)
SAE AS 9527C-2022
SCREW, MACHINE STEEL UNS G87400, CADMIUM PLATE, DRILLED, 1 HOLE, HEXAGON HEAD, .1380-40 UNJF-3A
SAE AS 9528C-2022
SCREW, MACHINE STEEL UNS G87400, CADMIUM PLATE, DRILLED, 1 HOLE HEXAGON HEAD, .1640-36 UNJF-3A
SAE AS 9631A-2019
Screw, Machine - Hexagon Head, Pd Shank, Titanium AMS4967 (UNS R56400), .1380-40 UNJF-3A
Flat Fillister Heads
SAE AS 115401B-2014 (SAE AS115401B-2014)
SCREW ΓÇô FLAT FILLISTER HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN. .1900-32 UNF-3A (Stabilized: May 2014)
SAE AS 115451C-2014 (SAE AS115451C-2014)
SCREW ΓÇô FLAT FILLISTER HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN. .2500-28UNF-3A (Stabilized: May 2014)
SAE AS 115501B-2014 (SAE AS115501B-2014)
SCREW ΓÇô FLAT FILLISTER HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN. .3125-24 UNF-3A (Stabilized: May 2014)
SAE AS 115601B-2014 (SAE AS115601B-2014)
SCREW - FLAT FILLISTER HEAD, DRILLED SHANK, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN., .1900-32 UNF-3A (Stabilized: Jul 2014)
SAE AS 115651B-2014 (SAE AS115651B-2014)
SCREW - FLAT FILLISTER HEAD, DRILLED SHANK, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN., .2500-28 UNF-3A (Stabilized: May 2014)
SAE AS 115801C-2015 (SAE AS115801C-2015)
SCREW - FLAT FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN, .1900-32 UNF-3A
SAE AS 115851B-2016 (SAE AS115851B-2016)
SCREW - FLAT FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN .2500-20 UNC - 3A
SAE AS 115901C-2014 (SAE AS115901C-2014)
SCREW ΓÇô FLAT FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN .2500-28 UNF ΓÇô 3A (Stabilized: May 2014)
SAE AS 115951C-2014 (SAE AS115951C-2014)
SCREW - FLAT FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN .3125-18 UNC-3A (Stabilized: Jul 2014)
SAE AS 116001B-2014 (SAE AS116001B-2014)
SCREW - FLAT FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN .3125-24 UNF-3A (Stabilized: Jul 2014)
SAE AS 116051B-2014 (SAE AS116051B-2014)
SCREW - FLAT FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN .3750-16 UNC-3A (Stabilized: Jul 2014)
SAE AS 116101B-2014 (SAE AS116101B-2014)
SCREW - FLAT FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS G87400, 125 KSI MIN .3750-24 UNF-3A (Stabilized: Jul 2014)
Oval Fillister Heads
SAE AS 116901B-2012 (SAE AS116901B-2012)
Screw - Oval Fillister Head, .112-40 (Stabilized: Feb 2012)
SAE AS 116913C-2018
SCREW - OVAL FILLISTER, DRILLED HEAD, CADMIUM PLATED, STEEL UNS K00802, .1120-40 UNC - 2A
SAE AS 116925B-2012 (SAE AS116925B-2012)
Screw - Oval Fillister Head, .138-32 (Stabilized: Feb 2012)
SAE AS 116961C-2012 (SAE AS116961C-2012)
Screw - Oval Fillister Drilled Head, .138-32 (Stabilized: Feb 2012)
SAE AS 117001B-2012 (SAE AS117001B-2012)
Screw - Oval Fillister Head, .164-32 (Stabilized: Feb 2012)
SAE AS 117041B-2012 (SAE AS117041B-2012)
Screw - Oval Fillister Drilled Head, .164-32 (Stabilized: Feb 2012)
Cheese Heads
ISO 1207:2011
Slotted cheese head screws - Product grade A
ISO 7048:2011
Cross-recessed cheese head screws
ISO 14580:2011
Hexalobular socket cheese head screws
Pan Heads
ISO 1580:2011
Slotted pan head screws - Product grade A
ISO 14583:2011
Hexalobular socket pan head screws
ISO 1481:2011
Slotted pan head tapping screws
ISO 7045:2011
Pan head screws with type H or type Z cross recess - Product grade A
ISO 12260:2016
Aerospace - Screws, pan head, internal offset cruciform ribbed or unribbed drive, stepped shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa - Dimensions
ISO 12261:2016
Aerospace - Screws, pan head, internal offset cruciform ribbed or unribbed drive, pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa - Dimensions
ISO 3202:1997
Aerospace - Screws, pan head, internal offset cruciform ribbed or unribbed drive, threaded to head, MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa - Dimensions
Countersunk Heads
ISO 7721:1983
Countersunk head screws - Head configuration and gauging
ISO 7721-2:1990
Countersunk flat head screws - Part 2: Penetration depth of cross recesses
ISO 7047:2011
Raised countersunk head screws (common head style) with type H or type Z cross recess - Product grade A
ISO 2009:2011
Slotted countersunk flat head screws - Product grade A
ISO 2010:2011
Slotted raised countersunk head screws - Product grade A
ISO 1482:2011
Slotted countersunk (flat) head tapping screws
ISO 1483:2011
Slotted raised countersunk (oval) head tapping screws
ISO 15065:2005
Countersinks for countersunk head screws with head configuration in accordance with ISO 7721
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 7046-2:2011
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 14584:2011
Hexalobular socket raised countersunk head screws
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 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
Round Heads
SAE AS 3568A-2018
SCREW, DRIVE, ROUND HEAD, TYPE U, AMS5504 (UNS S41000)
DoubleHex Heads
SAE AS 9207C-2012 (SAE AS9207C-2012)
Screw, Machine - Steel, Diffused Nickel - Cadmium Plated, Double Hexagon Extended Washer Head, UNS K14675 195 KSI MIN, .1640-36 UNJF-3A ( Stabilized: Jan 2012 )
SAE AS 9216C-2012 (SAE AS9216C-2012)
Screw, Machine - Steel, Diffused Nickel-Cadmium Plate, Double Hexagon Extended Washer Head, Drilled, UNS K14675, 195 KSI MIN, .1640-36 UNJF-3A ( Stabilized: Jan 2012 )
SAE AS 9554E-2018
SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, UNS S66286, 130 KSI MIN, .1380-40 UNJF-3A
SAE AS 9555D-2017
SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, UNS S66286, UTS 130 KSI MIN, .1640-36 UNJF-3A
SAE AS 9557E-2017
BOLT, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, UNS S66286, UTS 130 KSI MIN, .2500-28 UNJF-3A
SAE AS 9564C-2020
SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, CRES UNS 266286, 130 KSI MIN, .1640-36 UNJF-3A
SAE AS 9572C-2021
SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, CORROSION AND HEAT RESISTANT STEEL, UNS S66286, 130 KSI MIN, .1380-40 UNJF-3A
SAE AS 9573C-2017
SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, CORROSION AND HEAT RESISTANT STEEL, UNS S66286, 130 KSI MIN, .1640-36 UNJF-3A
SAE AS 9712B-2020
SCREW, MACHINE - DOUBLE HEXAGON, EXTENDED WASHER HEAD, DRILLED, SILVER PLATED, NICKEL ALLOY (UNS N07001), .1380-40 UNJF-3A
IFI-115:2002
Flange 12-Point Screws
SAE J 58-2015 (SAE J58-2015)
Flanged 12-Point Screws
