Special Bolts
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Sunmach manufactures high-performance Stainless Steel Bolts built specifically to prevent these connection disasters in critical setups. Made to fit standard industrial wrenches and sockets, these heavy-duty fasteners deliver high-strength hold, spread extreme squeezing forces evenly, and never allow their threads to strip or fail on the job. When heavy industrial equipment handles massive physical weights or constant shaking, everyday fasteners are highly prone to sliding, stretching, or breaking completely away under pressure. This loosening ruins machinery alignment, triggers unexpected pipeline leaks, and creates incredibly expensive repair outages. To ensure permanent structural safety on every order, we produce our entire product line using only pure, premium metals sourced directly from globally audited steel mills. Our versatile Stainless Steel Bolts provide an ideal combination of mechanical holding power and long-term resistance against outdoor weather, wet marine environments, and harsh factory washdowns. Every single production batch is completely checked inside our laboratories to guarantee it can survive brutal physical weight, relentless shaking, and intense tightening torque without losing a fraction of its grip, providing a reliable, worry-free lifespan of up to 50 years.
Special Bolts
Sunmach is one of the leading global manufacturer and supplier of Standard & Custom made Premium Nickel Alloys Special Bolts engineered for the most critical industrial applications. We are an ISO 9001:2015 certified company, demonstrating our commitment to rigorous quality standards and consistent product excellence to deliver the best of the Nickel Alloys & Special Steel Fasteners.
Nickel Alloys Special Bolts are manufactured by us from a range of high-performance & exotic materials such as : Hastelloy® C-276, Hastelloy® C-22, Hastelloy® B-2, Monel® 400, Monel® K-500, Inconel® 600, Inconel® 625, Inconel® 718, Titanium Grade 2, Titanium Grade 5, Titanium Grade 7, Duplex S31803, Duplex S32205, Super Duplex S32750 to various Stainless Steel grades of SS 304L, SS 316L SS 310, SS 310H, SS 347H, etc followed by Special Stainless Steel Grades such as 904L Stainless Steel, UNS N08904, DIN EN1.4539 Nitronic® 50, Nitronic® 60, UNS S21800, DIN EN, 254 SMO, UNS S31254, DIN EN 1.454, A4-80 Stainless Steel etc.
Sunmach’s extensive manufacturing capabilities and In-Stock Genuine & Authentic Raw Material availability allows us to support demanding industrial requirements with durable, corrosion-resistant, heat resistant & reliable Nickel Alloys Special Bolts delivered dot in time to any corner of the world, supported by all required test certificates and with 100% traceability.
Nickel Alloy Special Bolts Specifications
Using Advanced Hot Forming Technology, Our Nickel Alloys Special Bolts are manufactured in various specifications including DIN, ISO, ANSI and IS standard in nominal diameters ranging from 1/4” to 3” (M6 to M76). We provide Special Bolts in both Imperial and metric sizes to accommodate diverse application needs. Our Nickel Alloys Special Bolts are specially engineered to withstand high temperature and high-pressure, ensuring superior strength and reliability.
Nickel Alloy Special Bolts Application Industries
Sunmach serves a diverse range of markets including Chemical Processing, Semiconductor, Power Generation, Aerospace, Oil & Gas, Pharmaceutical, Food & Beverage, Marine, Pulp & Paper, Petrochemical & Refining, Air Pollution Control and Water Treatment.
Sizes
| Metric : | M6 to M76 |
| Imperial : | 1/4" to 3" |
| MOQ : | 1 Piece & Above |
| Certification : | EN 10204 3.1, EN 10204 3.2 (On Demand) |
Specification
| Bolt | DIN | ISO | ANSI | IS |
|---|---|---|---|---|
| Special Bolt | 931 | 4014 | B18.2.1 | 1364 |
Frequently Asked Questions
Common questions about Sunmach Stainless Steel Bolts
Specify Stainless Steel Bolts if your primary goal is long-term, cost-effective defense against corrosion and fluid oxidation in outdoor weather, wet marine environments, or standard industrial washdowns.
Built from premium-grade alloys, they naturally form a protective oxide layer that shields the metal from corrosion, keeping fasteners secure during frequent factory cleanings, steam exposure, or outdoor marine weather.
Our bolts are machined with deep, precision thread paths ensuring a flawless mechanical mesh with the mating nut, so clamping force is shared equally across all thread flanks, preventing localized stress peaks.
They are the preferred standard across marine engineering, chemical processing plants, food and beverage manufacturing, and water treatment facilities where carbon steel would quickly rust and contaminate the system.
We subject them to rigorous destructive testing protocols, soaking parts in intense saltwater baths and using industrial machinery to violently stretch and shake them millions of times.