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Product Overview
Allen Bolts feature a cylindrical head with an internal hexagonal socket that is tightened using an Allen key or hex wrench. Their compact head design makes them ideal for applications with limited installation space while providing higher tightening torque compared to conventional bolts. Allen Bolts are commonly used in precision assemblies, heavy machinery, industrial equipment, and structural applications where strength and reliability are critical.
At Moksh Tubes & Fittings LLP, we manufacture precision-engineered Allen Bolts using premium-quality raw materials and advanced CNC machining technology. Our bolts are available in a variety of sizes, thread types, finishes, and material grades to meet diverse industrial requirements.
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Specifications
| Specification | Details |
|---|---|
| Product | Allen Bolt |
| Standards | ISO 4762, DIN 912, ASTM, ASME, BS |
| Material | Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Super Duplex & Nickel Alloys |
| Size Range | M3 to M64 / ⅛" to 2½" |
| Length | 6 mm to 300 mm (Custom Sizes Available) |
| Thread Type | Metric, UNC, UNF |
| Drive Type | Internal Hex (Allen) |
| Thread Style | Full Thread & Partial Thread |
| Surface Finish | Plain, Bright, Black Oxide, Zinc Plated, PTFE Coated |
| Manufacturing | Cold Forged & CNC Machined |
Chemical Composition
The chemical composition of Allen Bolts varies depending on the selected material grade. At Moksh Tubes & Fittings LLP, our Allen Bolts are manufactured using premium-quality raw materials that comply with ASTM, ASME, ISO, DIN, EN, and BS standards, ensuring excellent corrosion resistance, high mechanical strength, and long service life.
| Element | SS 304 (%) | SS 304L (%) | SS 316 (%) | SS 316L (%) |
|---|---|---|---|---|
| Carbon (C) | 0.08 Max | 0.03 Max | 0.08 Max | 0.03 Max |
| Manganese (Mn) | 2.00 Max | 2.00 Max | 2.00 Max | 2.00 Max |
| Silicon (Si) | 0.75 Max | 0.75 Max | 0.75 Max | 0.75 Max |
| Phosphorus (P) | 0.045 Max | 0.045 Max | 0.045 Max | 0.045 Max |
| Sulfur (S) | 0.030 Max | 0.030 Max | 0.030 Max | 0.030 Max |
| Chromium (Cr) | 18.00–20.00 | 18.00–20.00 | 16.00–18.00 | 16.00–18.00 |
| Nickel (Ni) | 8.00–10.50 | 8.00–12.00 | 10.00–14.00 | 10.00–14.00 |
| Molybdenum (Mo) | — | — | 2.00–3.00 | 2.00–3.00 |
| Nitrogen (N) | 0.10 Max | 0.10 Max | 0.10 Max | 0.10 Max |
| Iron (Fe) | Balance | Balance | Balance | Balance |
Note: Chemical composition varies depending on the selected material grade. Carbon Steel, Alloy Steel Grade 12.9, ASTM A193 Grade B7, ASTM A193 Grade B7M, ASTM A320 Grade L7, Duplex Stainless Steel, Super Duplex Stainless Steel, Inconel®, Monel®, Hastelloy®, and other Nickel Alloy Allen Bolts are manufactured in accordance with the relevant ASTM and ASME material specifications.
Size & Weight Chart
Allen Bolts are manufactured according to ISO 4762, DIN 912, ASTM, and ASME standards and are available in a wide range of diameters, lengths, and thread configurations.
| Bolt Size | Thread Pitch | Head Diameter (mm) | Standard Length (mm) | Approx. Weight (kg/100 pcs) |
|---|---|---|---|---|
| M3 | 0.50 | 5.5 | 6–30 | 0.12 |
| M4 | 0.70 | 7.0 | 6–40 | 0.25 |
| M5 | 0.80 | 8.5 | 8–50 | 0.45 |
| M6 | 1.00 | 10.0 | 10–60 | 0.75 |
| M8 | 1.25 | 13.0 | 12–80 | 1.55 |
| M10 | 1.50 | 16.0 | 16–100 | 2.90 |
| M12 | 1.75 | 18.0 | 20–120 | 5.10 |
| M16 | 2.00 | 24.0 | 25–150 | 10.60 |
| M20 | 2.50 | 30.0 | 30–200 | 18.90 |
| M24 | 3.00 | 36.0 | 40–250 | 31.50 |
| M30 | 3.50 | 45.0 | 50–300 | 58.20 |
| M36 | 4.00 | 54.0 | 60–300 | 94.80 |
Note: Dimensions and weights are approximate and may vary depending on the thread type (Metric, UNC, UNF), full or partial thread design, material grade, surface finish, and manufacturing tolerances. Custom sizes and lengths are available upon request.
Grades & Equivalent
Stainless Steel Grades
304 / 304L, 316 / 316L
Carbon & Alloy Steel
Carbon Steel, Alloy Steel Gr 12.9,
ASTM A193 B7, ASTM A320
L7
Duplex & Super Duplex
UNS S31803 / 2205
UNS S32750 / 2507
High-Performance Alloys
Inconel®, Monel®, Hastelloy® Alloys
Applications
Allen Bolts are widely used in:
Industrial Machinery
Automotive Industry
Aerospace Components
Oil & Gas Equipment
Petrochemical Plants
Power Generation Plants
Robotics & Automation
Tool & Die Manufacturing
Marine & Offshore Projects
Features & Advantages
High-strength internal hex drive design
Compact head for space-saving installations
Excellent tightening torque capability
Superior corrosion and oxidation resistance
High tensile strength and durability
Precision-machined threads for secure fastening
Resistant to vibration and loosening
Long service life with minimal maintenance
Manufactured according to international quality standards
Mechanical Properties
The mechanical properties of Allen Bolts depend on the selected material grade and comply with applicable ASTM, ISO, and DIN standards. The table below shows the typical mechanical properties for commonly supplied stainless steel grades.
| Property | SS 304 / 304L | SS 316 / 316L |
|---|---|---|
| Tensile Strength (MPa) | 515 Min | 515 Min |
| Yield Strength (MPa) | 205 Min | 205 Min |
| Elongation (%) | 40 Min | 40 Min |
| Hardness (HB Max) | 201 | 217 |
Note: Mechanical properties for Carbon Steel, Alloy Steel Grade 12.9, ASTM A193 Grade B7, ASTM A193 Grade B7M, ASTM A320 Grade L7, Duplex Stainless Steel, Super Duplex Stainless Steel, Inconel®, Monel®, Hastelloy®, and other Nickel Alloy Allen Bolts are available in accordance with their respective ASTM, ASME, ISO, and DIN material specifications upon request.
Why Choose Moksh Tubes & Fittings LLP?
Frequently Asked Questions (FAQ)
What is an Allen Bolt?
An Allen Bolt is a high-strength fastener with an internal hexagonal socket head that is tightened using an Allen key or hex wrench for secure and precise fastening.
Where are Allen Bolts commonly used?
Allen Bolts are widely used in industrial machinery, automotive, aerospace, robotics, oil & gas, power plants, marine, and precision engineering applications.
Which materials are available?
We manufacture Allen Bolts in stainless steel, carbon steel, alloy steel, duplex, super duplex, and nickel alloy grades.
Do you provide material test certificates?
Yes. EN 10204 3.1 Material Test Certificates are supplied with every order.
Can you manufacture custom sizes?
Yes. We manufacture Allen Bolts in custom diameters, lengths, thread types, surface finishes, and material grades according to customer specifications.
Request a Quote
Looking for a trusted Allen Bolts manufacturer and supplier? Contact Moksh Tubes & Fittings LLP for premium-quality industrial Allen Bolts, competitive pricing, ready stock, technical support, and fast worldwide delivery. Request your free quotation today.
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