Hollow Hex Bolts Supplier | Astm Grade Industrial Bolts | Jinnox Bolt

Jinnox Bolt is a reputable company that provides quality solutions of Hollow Hex Bolts Supplier In Oman that is used in the industries that require strong but at the same time lightweight fastening parts. Hollow hex bolts or hollow Allen bolts are made to have a bore in their middle which minimizes the total weight but does not impair the mechanical strength. These bolts find extensive application in hydraulic systems, automotive structures, machinery and precise engineering needs where fluid flow control or minimal mass is needed. They are made with high quality materials and high standards, and this makes them very durable, resistant to corrosion, and reliable in harsh conditions.

These fasteners are usually supplied under different grades like Grade 8.8, 10.9 and 12.9 alloy steel and stainless steel grades like SS304 and SS316 which will give good tensile strength and service life. They can be provided as a solid source of supply of Hollow Allen Bolts. They can be easily installed using Allen keys and this ensures that their socket head is hexagonal, giving high torque and fastening capability. In a B2B platform of the world, hollow hex bolts are very favored in the manufacturing companies of engineering, oil and gas and heavy equipment due to their accuracy in the manufacture and the suitability with the international standards of industrial fastening application.

Material & Grades Table – Hollow Hex Bolts

Material	Grade / Standard	Size / Thickness / Diameter	Extra Specification	Weight (kg/1000 pcs)
Stainless Steel	SS 304 / ASTM F593	M4–M24 × 8–200 mm	Corrosion-resistant hollow fastening	Approx. 1–300
Stainless Steel	SS 316 / ASTM F593	M4–M24 × 8–200 mm	Marine and chemical applications	Approx. 1–300
Stainless Steel	SS 316L	M4–M24 × 8–200 mm	Low-carbon corrosion-resistant construction	Approx. 1–300
Carbon Steel	SAE 1018	M5–M24 × 10–200 mm	General engineering applications	Approx. 2–350
Alloy Steel	ISO 898-1 Class 8.8	M5–M30 × 10–250 mm	High-strength mechanical applications	Approx. 2–450
Alloy Steel	ISO 898-1 Class 10.9	M5–M30 × 10–250 mm	Heavy-duty fastening	Approx. 2–450
Alloy Steel	ISO 898-1 Class 12.9	M5–M24 × 10–200 mm	Very high-strength applications	Approx. 2–350
Titanium	Grade 5 / ASTM F467	M4–M24 × 8–200 mm	Lightweight and corrosion-resistant	Approx. 1–300

Key Features & Advantages

• Hollow construction can reduce fastener weight
• External hexagonal head provides easy tool engagement
• Suitable for lightweight and compact assemblies
• High-strength alloy steel options support demanding applications
• Stainless steel grades provide excellent corrosion resistance
• Suitable for aerospace, automotive, robotics, and machinery
• Available in customized hollow profiles, sizes, grades, and finishes

Chemical Composition

Representative Grade: Stainless Steel 316

Element	Percentage (%)
Chromium (Cr)	16.0–18.0
Nickel (Ni)	10.0–14.0
Molybdenum (Mo)	2.0–3.0
Manganese (Mn)	2.00 max.
Carbon (C)	0.080 max.
Iron (Fe)	Balance

Mechanical Properties

Property	Value
Tensile Strength	515 MPa min.
Yield Strength	205 MPa min.
Elongation	40% min.
Hardness	95 HRB max.

Equivalent Grade

Standard	Grade
ASTM	F593 Type 316
UNS	S31600
EN	1.4401
DIN	X5CrNiMo17-12-2