METRIC SOCKET SET SCREW DIMENSIONS

Dimensions of metric socket set screw with flat, cone, long dog and cup point are shown in the following charts according to DIN EN ISO 4026:2004, DIN EN ISO 4027:2004, DIN EN ISO 4028:2004 and DIN EN ISO 4029:2004 standards.

DIN EN ISO 4026 specifies the characteristics of hex socket set screws with flat point and thread sizes from M1.6 up to and including M24.

DIN EN ISO 4027 specifies the characteristics of hex socket set screws with cone point and thread sizes from M1.6 up to and including M24.

DIN EN ISO 4028 specifies the characteristics of hex socket set screws with dog point and thread sizes from M1.6 up to and including M24.

DIN EN ISO 4029 specifies the characteristics of hex socket set screws with cup point and thread sizes from M1.6 up to and including M24.

Metric Socket Set Screw Sizes and Dimensions:

INPUT PARAMETERS
Thread Size [d]
Point Type	Flat Point	Cone Point	Long Dog Point	Cup Point
Nominal Length [l] ^{Note 1}

Note 1: The range of commercial lengths is given in the list. Consult manufacturer for availability of other lengths.

Metric Hexagon Socket Set Screw with Flat Point (DIN EN ISO 4026)

Thread Size	Dia.of Pitch	Flat Point Diameter		Width across Corners	Width across Flats			Depth of Driving Feature	Screw Length
d	P	d_p,max	d_p,min	e_min	s_nom	s_max	s_min	t_min	l_nom	l_max	l_min
---	---	---	---	---	---	---	---	---	---	---	---
Screw Length:		---
Specifications: - Thread tolerance class: 6g - Property Class: Steel - 45H; Stainless Steel - A1-12H, A2-21H, A3-21H, A4-21H, A5-21H - Finish: For steel screws, as processed. Electroplating per ISO 4042 and zinc flake coatings per ISO 10683. For stainless steel screws, plain. - Designation: Hexagon socket set screw ISO 4026 - M5 x 12 - 45H (A hexagon socket set screw with flat point, thread size d=M5, nominal length l=12 mm, steel with property class 45H)
Metric Hexagon Socket Set Screw with Cone Point (DIN EN ISO 4027)

Thread Size	Dia. of Pitch	Dia. of Truncated Cone Point		Width across Corners	Width across Flats			Depth of Driving Feature	Screw Length
d	P	d_t,max		e_min	s_nom	s_max	s_min	t_min	l_nom	l_max	l_min
---	---	---		---	---	---	---	---	---	---	---
Screw Length:		---
Specifications: - Thread tolerance class: 6g - Property Class: Steel - 45H; Stainless Steel - A1-12H, A2-21H, A3-21H, A4-21H, A5-21H - Finish: For steel screws, as processed. Electroplating per ISO 4042 and zinc flake coatings per ISO 10683. For stainless steel screws, plain. - Designation: Hexagon socket set screw ISO 4027 - M6 x 10 - 45H (A hexagon socket set screw with cone point, thread size d=M6, nominal length l=10 mm, steel with property class 45H)

Metric Hexagon Socket Set Screw with Dog Point (DIN EN ISO 4028)

Dimensions of Metric Hex Socket Set Screw with Long Dog Point

Thread
Size

Dia. of
Pitch

Flat
Point
Dia.

Width across Corners

Width across
Flats

Depth of
Drive Feat.

Length of Point

Screw
Length

d_p,max

d_p,min

e_min

s_nom

s_max

s_min

t_min

z_max

z_min

l_nom

l_max

l_min

---

Screw Length:

---

Specifications:

- Thread tolerance class: 6g

- Property Class: Steel - 45H; Stainless Steel - A1-12H, A2-21H, A3-21H, A4-21H, A5-21H

- Finish: For steel screws, as processed. Electroplating per ISO 4042 and zinc flake coatings per ISO 10683. For stainless steel screws, plain.

- Designation: Hexagon socket set screw ISO 4028 - M4 x 8 - 45H (A hexagon socket set screw with dog point, thread size d=M4, nominal length l=8 mm, steel with property class 45H)

Metric Hexagon Socket Set Screw with Cup Point (DIN EN ISO 4029)

Thread Size	Dia.of Pitch	Cup Point Diameter		Width across Corners	Width across Flats			Depth of Driving Feature	Screw Length
d	P	d_z,max	d_z,min	e_min	s_nom	s_max	s_min	t_min	l_nom	l_max	l_min
---	---	---	---	---	---	---	---	---	---	---	---
Screw Length:		---
Specifications: - Thread tolerance class: 6g - Property Class: Steel - 45H; Stainless Steel - A1-12H, A2-21H, A3-21H, A4-21H, A5-21H - Finish: For steel screws, as processed. Electroplating per ISO 4042 and zinc flake coatings per ISO 10683. For stainless steel screws, plain. - Designation: Hexagon socket set screw ISO 4029 - M10 x 16 - 45H (A hexagon socket set screw with cup point, thread size d=M10, nominal length l=16 mm, steel with property class 45H)

Note¹: Minimum diameter of the face (d_f) ≈ Minor Thread Diameter

Supplements:

Link	Usage
ISO Metric Thread Calculator	Calculates basic major, minor and pitch diameters of the metric external (bolt) thread and internal (nut) thread according to ISO 724:1993 standard. In addition to basic size calculations, tolerance calculations of different tolerance classes can be done according to ISO 965-1:1998 and ISO 965-2:1998 standards.

Reference:

DIN EN ISO 4026:2004, Hexagon Socket Set Screws with Flat Point (ISO 4026:2003)
DIN EN ISO 4027:2004, Hexagon Socket Set Screws with Cone Point (ISO 4027:2003)
DIN EN ISO 4028:2004, Hexagon Socket Set Screws with Dog Point (ISO 4028:2003)
DIN EN ISO 4029:2004, Hexagon Socket Set Screws with Cup Point (ISO 4029:2003)