G-Fast is a leading custom bolt manufacturer specializing in high-performance fastener solutions for demanding industrial applications. Our precision-engineered custom bolts are designed and manufactured to exact specifications, ensuring superior performance in aerospace, agriculture, automotive, military, commercial, material handling, heavy duty truck, medical, and energy sectors. From small lots to production runs, we deliver quality custom fastener solutions that meet the most stringent performance requirements.

Custom Manufactured Bolts; Capabilities & Features

Available Diameters and Lengths

Complete range of diameters from 1/4″ (M4) to 3” (M76) diameter heavy-duty bolts. Our manufacturing capabilities accommodate standard and metric, size callouts and incremental lengths as short or long as required.  All bolts, custom or standards will meet industrial and military standards, the option of additional precision tolerances as required to meet our customer’s demanding applications

Standard Bolts and Custom Bolts Per Supplied Specifications

We manufacture bolts exactly to your drawings, blueprints, or detailed specifications. Our engineering team work directly from your technical documents to ensure perfect compliance with your design requirements, dimensional tolerances, and performance criteria. Design review will confirm all callouts have been covered and confirmed with the customer’s engineering team.

Flexible Production Volumes for Custom Made Bolts

• Small Batches – Cost-effective solutions for prototype development, testing, and low-volume specialty applications
• Production Runs – Scalable manufacturing for high-volume requirements and blanket order releases with consistent quality and competitive pricing
• Expedited Emergency Service – Rush orders available on request to meet critical project deadlines and urgent maintenance needs

Made in USA – Best Available Lead Times

Domestically manufactured custom bolts with superior quality control and the best available lead times. Our U.S.-based production facilities ensure reliable supply chain management and responsive customer service.

Custom Bolts Advanced Manufacturing Methods, Precision Tolerances guaranteed

Custom bolts may be manufactured using the optimal process for quantities required nominal size and specifications, all manufacturing guarantees strict adherence to precision tolerances and complex geometries for specialized requirements

• Cold-Headed – High-volume production with excellent material utilization and surface finish
• Hot Forged – Optimal manufacturing choice for smaller quantities, the largest diameters and exotic material of various sizes
• Machined from Bar – Bolts will be machined based on choice of materials, quantity and required lead-times
• Thread Options: UNF, UNC, class 2A and 3A fit, Metric standard and fine pitch, military thread specifications, and custom thread profiles such as Left Hand and ACME threads

Why Choose G Fast as Your Custom Bolt Manufacturer?

Advanced Manufacturing Capabilities – Our state-of-the-art facilities utilizes advance precision secondary processes such as grinding, broaching, thread rolling to supplement the cold heading, hot heading or CNC machining to ensure repeatability in every custom bolt we deliver.

Material Expertise – We work with the mills and metallurgists sourcing the carbon alloy and stainless steels specified by our customers. Our extensive supplier networks access brass, copper, bronze, titanium, and other exotic metals and super alloys as required.

Quality Assurance – ISO 9001-2015 compliant quality system tracks and documents materials and processes with 2-way traceability.  All certifications and test reports are kept on file for a minimum of 7 years.

Flexible Production – From prototypes, low volume spot buys to high-volume production runs with scheduled blanket releases,  we scale our manufacturing to meet your timeline and budget requirements.

Engineering Support – Our technical team will collaborate with you throughout the design process, optimizing bolt specifications for manufacturability, performance, and cost-effectiveness.

Custom Manufacturing Process

1. Design Consultation – Work with our engineers to adjust tolerances, dimensions, class of thread, materials, and performance criteria specific to your application.
2. Material Selection – Choose materials or specify exotic alloys from certified material options, engineered for the best choice of manufacturing method.
3. Precision Manufacturing – In process inspection combined with advanced production techniques ensure consistent repeatable quality and dimensional accuracy with every purchase order.
4. Surface Finishing – Complete coating services including  zinc and cadmium plating, Parkerizing, Magni and powder coating for enhanced protection and appearance.
5. Quality Verification – Rigorous inspection and testing protocols ensure every supplied bolt meets your specifications and industry standards.

Industries We Serve

Our custom bolts are trusted in over-the-road heavy truck, chemical, material handling, aerospace,  automotive, marine for corrosive environments, construction for structural integrity, energy for extreme conditions, and industrial OEM for precision machinery.

Get Your Custom Bolt Quote Today

Need specialized fasteners that standard bolts can’t handle? Our custom bolt manufacturer expertise delivers solutions tailored to your exact requirements. Contact our sales team for fast reliable and accurate quoting on your custom project.

Ready to discuss your custom bolt supply chain requirements? Use our quote form or speak directly with a sales engineer to explore how G-Fast can solve your most challenging fastener requirements and precision-manufactured made-to-print custom bolts.