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

Hex head bolts, or more commonly referred to as hexagon or hex bolts, feature a six-sided head for effortless tightening using a wrench or socket. Their strength and versatility mean they are used in construction, automotive, and machinery projects.

DIN 931 / ISO 4014		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 Stainless-Steel Hex Head Bolts are built to last. Made from quality stainless steel, they resist corrosion and hold strong even under high pressure. These products are held to a global standard and perform effectively in various industries such as construction, automotive, and heavy machinery.

A2-70 Mechanical Properties

Tensile Strength

≥700 MPa

Yield Strength

≥450 MPa

Elongation

≥12%

Hardness Max

≤215 HB

Materials

Stainless Steel

Steel Grade

Finishing

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

Thread

Standards

Hexagonal Head

A spanner or socket can engage every 60°, so even in tight spaces you can turn it with small rotations.

Even torque distribution

Flat faces allow better grip and reduce rounding off compared to square heads.

High strength

The geometry distributes force evenly when tightening/loosening.

Sizes and Lengths

A diverse array of sizes and lengths are available to accommodate a variety of uses.

Threading

Supplied in coarse pitch (standard metric), fine pitch, or inch series (UNC/UNF) threads. Threads are rolled for superior strength and fatigue resistance.

Tolerances

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

Industry We Serve

At Gem Star, our expertise lies in providing top-notch fasteners to a diverse range of industries. Our skilled team is well-versed in the particular needs of each sector and is prepared to fulfill your requirements for bolts, screws, and other fastening solutions with utmost accuracy and dependability.

Oil & Gas Industry

The oil and gas industry requires high-performance fasteners capable of withstanding extreme conditions such as high pressure, high temperatures, corrosion, and vibration.

Power Plants

Power plants (thermal, nuclear, hydro, wind, and solar) demand high-strength, heat-resistant, and corrosion-resistant fasteners to ensure reliable operation under extreme conditions...

Marine & Ship Industry

Fasteners used in the marine and shipbuilding industry must withstand harsh saltwater environments, high humidity, vibration, and corrosion.

Refining Industry

The refining industry including petroleum, petrochemical, and chemical refineries relies heavily on high-performance fasteners capable of withstanding extreme temperatures, pressure,

Automotive Industry

Fasteners in the automotive industry are critical components used to assemble and secure various parts of a vehicle. They must meet stringent requirements for strength, fatigue...

Pharmaceutical Industry

The pharmaceutical industry demands fasteners that meet the highest standards for hygiene, corrosion resistance, chemical compatibility, and regulatory compliance....

Aerospace Industry

The aerospace industry requires fasteners that are exceptionally lightweight, high-strength, fatigue-resistant, and temperature-stable. These fasteners are critical to the safety, structural...

Engineering Sector

The engineering sector encompasses civil, mechanical, electrical, structural, and industrial engineering each requiring fasteners that meet specific performance, safety, and structural

Towers & Transmission

The towers and transmission industry (including power transmission towers, telecom towers, broadcast masts, and substation structures) relies on high strength, weather-resistant

Railways & Mobility

The railways and mobility sector including rail infrastructure, rolling stock (coaches, wagons), and urban transport systems requires fasteners that are high-strength,

Renewable Energy

The renewable energy sector—including solar, wind, hydro, and bio energy demands fasteners that are corrosion-resistant, high-strength, and weather-durable, ensuring structural

Construction Industry

Essential in the construction industry, fasteners play a crucial role in assembling, reinforcing, and connecting structural and non-structural elements for buildings, bridges, roads,

Let’s Work Together

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