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ASME B18.6.3 Machine Screws – Inch Series – Manufacturer, Exporter & Supplier

We manufacture and export ASME B18.6.3 Machine Screws – Inch Series conforming to exact ASME B18.6.3 dimensional and mechanical specifications. Available in Steel Grade 2 / 18-8 SS / Brass, our ASME B18.6.3 machine screw (inch)s pass rigorous in-house testing — hardness, tensile and dimensional — before dispatch. ISO 9001:2015 certified production, EN 10204 3.1 mill test reports supplied as standard, and dedicated export documentation for 50+ destination countries.
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ASME B18.6.3 Key Specifications

The core specification data for ASME B18.6.3 Machine Screws – Inch Series, at a glance.

Standard

ASME B18.6.3

Type

Machine Screws – Inch Series

Size Range

0-80 to 3/4-10

Thread Pitch

UNC & UNF

Property Class / Grade

Steel Grade 2 / 18-8 SS / Brass

Head / Drive Type

Slotted / Phillips / Hex Socket

About ASME B18.6.3 Machine Screws – Inch Series

ASME B18.6.3 Machine Screws – Inch Series are machine screw (inch)s produced and tested to the exact requirements of the ASME B18.6.3 specification. Featuring a Slotted / Phillips / Hex Socket configuration with UNC & UNF thread form, they are available in property classes Steel Grade 2 / 18-8 SS / Brass across a size range of 0-80 to 3/4-10. The ASME B18.6.3 standard governs dimensional tolerances, mechanical properties including tensile strength, proof load and hardness, as well as surface finish requirements to ensure dependable performance in Electronics and IT Equipment applications worldwide.
Our ASME B18.6.3 Machine Screws – Inch Series are cold-forged from certified bar stock, heat-treated where required, and thread-rolled to guarantee consistent fit and fatigue performance. Every batch is documented with an EN 10204 3.1 Mill Test Report covering chemical composition, mechanical test results and dimensional inspection. Available in zinc electroplated, hot-dip galvanised, Geomet, Dacromet and black oxide finishes to match corrosion-resistance requirements for Appliances, Automotive Interior and USA Market applications. As a global exporter of ASME B18.6.3 fasteners, we consolidate orders with other standard-specification items into single shipments, backed by complete customs documentation for over 50 countries.
Technical Specifications

Raw Material

Steel Grade 2 Alloy / Stainless Steel

Country of Origin

India

Standard Body

ASME

Corrosion Resistance

Salt-spray tested to relevant grade

Recommended Torque

Per property class / grade

Storage Conditions

Dry, corrosion-inhibited packing

ASME B18.6.3 Dimensions & Size Chart

Precise dimensional data for every ASME B18.6.3 Machine Screws – Inch Series size, cross-referenced against the standard’s key measurement points.
SizeTPI UNCTPI UNFdk Pan (in)k Pan (in)L Range (in)
#440480.1830.0861/4–2
#632400.2260.1031/4–2
#832360.2700.1201/4–2-1/2
#1024320.3130.1371/4–3
1/4″20280.4380.1931/4–3
5/16″18240.5470.2103/8–3
Key Dimension Callouts

D

Nominal screw diameter across external thread major diameter.

L

Overall screw length measured parallel to the screw axis.

A

Head diameter measured across the largest circular head.

H

Head height measured from bearing surface to top.

Browse Related ASME Fastener Standards and Engineering Dimensions

Additional ASME engineering specifications cover fastener standards for bolts, screws, nuts, washers, stud bolts, threaded rods and other industrial fasteners. Compare related dimensions, tolerances, thread specifications, mechanical properties, material grades, manufacturing standards and quality requirements to identify the correct specification for demanding engineering, procurement and industrial applications.
ASME B18.2.1
ASME B18.2.2
ASME B18.3
ASME B18.21.1
ASME B18.31.2

ASME B18.6.3 Machine Screws – Inch Series – Material Grades & Property Classes

ASME B18.6.3 Machine Screws – Inch Series are available across multiple property classes and surface finish options to match load-bearing and corrosion-resistance requirements for Electronics, IT Equipment and Appliances applications.
Property Classes
Steel Grade 2 18-8 SS Brass
Surface Treatments
Zinc Electroplated Hot-Dip Galvanised (HDG) Geomet Coating Dacromet Coating Black Oxide Phosphate & Oil Plain (Self Colour) Nickel Plated

Why Choose Us for ASME B18.6.3 Machine Screws – Inch Series?

Nine reasons buyers worldwide rely on us as their ASME B18.6.3 Machine Screws – Inch Series manufacturer and export partner.
ISO Certified Production

Every batch of ASME B18.6.3 Machine Screws – Inch Series is manufactured under an ISO 9001:2015 certified quality management system with full in-process control.

EN 10204 3.1 MTR Supplied

A mill test report covering chemical composition, tensile, hardness and dimensional inspection accompanies every ASME B18.6.3 Machine Screws – Inch Series shipment.

48-hr Dispatch on Stock Items

Commonly stocked ASME B18.6.3 Machine Screws – Inch Series sizes leave our warehouse within 48 hours of order confirmation, minimising your downtime.

Export to 50+ Countries

Established freight and customs partners ensure reliable delivery of ASME B18.6.3 Machine Screws – Inch Series to buyers in over 50 countries worldwide.

Custom Sizes & Lengths

Non-standard ASME B18.6.3 Machine Screws – Inch Series lengths, diameters and special thread pitches are produced to order to match your drawing requirements.

Competitive Factory Pricing

Direct-from-factory pricing on ASME B18.6.3 Machine Screws – Inch Series with no middleman markup, offering the best value on volume and repeat orders.

In-House Metallurgical Testing

Hardness, tensile strength and dimensional checks for ASME B18.6.3 Machine Screws – Inch Series are performed in our in-house laboratory before every release.

Consolidated Multi-Standard Shipping

Combine ASME B18.6.3 Machine Screws – Inch Series with other standard-specification fasteners into a single container shipment to reduce freight costs.

Dedicated Export Documentation Team

Our specialist team prepares all customs, compliance and shipping paperwork for every ASME B18.6.3 Machine Screws – Inch Series export order.

ASME B18.6.3 Machine Screws – Inch Series – Applications & End Uses

ASME B18.6.3 Machine Screws – Inch Series are widely specified across multiple industries. Select an industry below to see how our ASME B18.6.3 machine screw (inch)s are applied.
ASME B18.6.3 Machine Screws – Inch Series are used in electronics for critical fastening applications where dimensional accuracy and mechanical performance are essential. Grade Steel Grade 2 is most commonly specified for electronics environments.
In it equipment, ASME B18.6.3 Machine Screws – Inch Series are valued for consistent dimensions and reliable load-bearing capability. We supply with full test documentation to support quality audits and project inspections.
ASME B18.6.3 Machine Screws – Inch Series are used in appliances assemblies where precise torque control and consistent fit are critical. We supply to OEM manufacturers and contractors with custom packaging formats.
For automotive interior applications, ASME B18.6.3 Machine Screws – Inch Series are supplied with material test reports, dimensional inspection certificates and PPAP documentation where required.
ASME B18.6.3 Machine Screws – Inch Series for usa market use are selected from stainless steel or coated grades to provide appropriate corrosion resistance while maintaining specified mechanical performance.
In general engineering applications, ASME B18.6.3 Machine Screws – Inch Series are fastened into assemblies requiring long-term reliability. Our export-packaged ASME B18.6.3 machine screw (inch)s arrive protected from transit corrosion with full documentation.

Request a Quote for ASME B18.6.3 Machine Screws – Inch Series

Get pricing and lead times for your required sizes and quantities. ISO 9001 certified. EN 10204 3.1 MTR supplied. Export to 50+ countries.
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Frequently Asked Questions About ASME B18.6.3

Common questions from buyers sourcing ASME B18.6.3 Machine Screws – Inch Series, covering sizes, grades, documentation and lead times.
We supply ASME B18.6.3 Machine Screws – Inch Series from 0-80 to 3/4-10 in UNC & UNF thread. Standard lengths are stocked; non-standard lengths are produced to order. Contact us with your exact requirements for availability confirmation.
ASME B18.6.3 Machine Screws – Inch Series are supplied in Steel Grade 2 / 18-8 SS / Brass. Carbon and alloy steel grades comply with ISO 898-1 and stainless steel grades comply with ISO 3506. ASTM grades are available for USA and Canadian export orders.
Every ASME B18.6.3 Machine Screws – Inch Series order includes an EN 10204 3.1 Mill Test Report covering chemical composition, tensile strength, hardness and proof load. Third-party inspection by SGS, BV or TUV can be arranged on request.
Stocked ASME B18.6.3 Machine Screws – Inch Series sizes dispatch within 48 hours of order confirmation. Custom lengths, special grades or surface finishes typically ship within 2-3 weeks. Contact us for a specific lead time on your required size and quantity.

Industrial Cities We Serve:

  • Ahmedabad
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