Stainless Steel Hex Head Screw Specification, Grade 202 304 316

Stainless Steel Hex Head Screw - Grade 202, 304, 316, A2, A2-70

A hex head screw is a type of fastener characterized by its hexagonal-shaped head, designed to be tightened or loosened using a wrench or socket tool. These screws are commonly used in construction, machinery, automotive applications, and any situation requiring a secure, firmly tightened connection. They come in various sizes, materials (such as steel, stainless steel, or brass), and thread types to suit different strength and corrosion resistance needs.

DIN 933 / ISO 4017		ANSI B 18.2.1 / BS 1083
Size	Length	Size	Length
M3	10-40	1/4"	1/2" - 2.1/2"
M4	10-50	5/16"	1/2" - 2.1/2"
M5	10-70	3/8"	3/4" - 4"
M6	10-70	7/16"	3/4" - 6 "
M8	10-150	1/2"	1" - 6"
M10	16-150	9/16"	1" - 6"
M12	20-150	5/8"	1" - 6"
M14	20-150	-	-
M16	25-150	-	-

Our comprehensive Standards & Dimensions ensure that you find the perfect fit for your projects. With superior strength and corrosion resistance, these screws are engineered to meet industry standards while providing reliable performance. Elevate your assembly with confidence—choose our Hex Head Screws for unmatched quality and reliability!

A2-80 Mechanical Properties

Tensile Strength

≥800 MPa

Yield Strength

≥600 MPa

Elongation

≥8%

Hardness Max

≤235 HB

Materials

Stainless Steel

Steel Grade

Finishing

Polished
Geomet
Dacromet
Teflon
Hot-Dip Galvanzing
Zinc (Yellow, White, Blue)
Black Qxide

Thread

Standards

Hexagonal Head Design

Six-sided head allows easy use with wrenches and socket tools, providing strong grip and efficient torque transfer.

High Torque Capacity

The flat surfaces of the head enable secure tightening and loosening without slipping or rounding.

Corrosion Resistance

Stainless steel fasteners effectively resist rust and oxidation. Perfect for outdoor, marine, and industrial applications, they provide long-lasting performance without the need for extra coatings.

Size Range

Supplied in diameters from M3 to M20 (metric) or ¼″ to 1″ (inch series) with a wide variety of lengths.

Thread Variants

Available as fully threaded (ISO 4017 / DIN 933) for maximum grip, or partially threaded (ISO 4014 / DIN 931) for higher shear strength.

Tolerances

Threads conform to 6g tolerance class (metric) or 2A (UNF/UNC) for accurate fit and interchangeability.

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