Button Head Cap Screws
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Duplex Button Head Cap Screws manufactured by Sunmach represent the industry's premier engineering benchmark for low-profile, high-strength fastening solutions designed to operate in the world's most aggressive environments. Sourced exclusively from premium global mills, our comprehensive portfolio of stainless steel Button Head Cap Screws is custom-machined from certified Duplex 2205 (UNS S32205) raw materials to combine the best mechanical properties of distinct stainless steel families. By utilizing advanced cold forming, precision thread rolling, and meticulously controlled in-house heat treatment, we produce high-integrity fasteners that deliver excellent corrosion resistance, superior mechanical strength, and reliable performance where head protrusion must be minimized. Our Duplex Button Head Cap Screws are widely used in offshore oil & gas, desalination, marine, aerospace, chemical processing, pharmaceutical, semiconductor, food processing, and precision engineering industries where low-profile, secure, and vibration-resistant fastening is essential. Every stainless steel Button Head Cap Screw is manufactured under strict quality control procedures, including certified raw material verification, chemical composition analysis, precision threading, dimensional inspection, mechanical testing, hardness testing, corrosion resistance evaluation, and complete batch traceability. Backed by over 13 years of specialized engineering experience, dedicated design engineers, and reliable global supply capabilities, Sunmach ensures zero-failure performance and consistent quality in critical industrial applications worldwide.
Button Head Cap Screws
Sunmach is one of the leading global manufacturer and supplier of Standard & Custom made Premium Nickel Alloys Button Head Cap Screws 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 Button Head Cap Screws 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 Button Head Cap Screws delivered dot in time to any corner of the world, supported by all required test certificates and with 100% traceability.
Nickel Alloy Button Head Cap Screws Specifications
Using Advanced Hot Forming Technology, Our Nickel Alloys Button Head Cap Screws are manufactured in various specifications including DIN, ISO, ANSI and IS standard in nominal diameters ranging from 1/4” to 3/4” (M6 to M20). We provide Button Head Cap Screws in both Imperial and metric sizes to accommodate diverse application needs. Our Nickel Alloys Button Head Cap Screws are specially engineered to withstand high temperature and high-pressure, ensuring superior strength and reliability.
Nickel Alloy Button Head Cap Screws 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 M20 |
| Imperial : | 1/4" to 3/4" |
| MOQ : | 1 Piece & Above |
| Certification : | EN 10204 3.1, EN 10204 3.2 (On Demand) |
Specification
| Bolt | DIN | ISO | ANSI | IS |
|---|---|---|---|---|
| Button Head Cap Screw | 931 | 4014 | B18.2.1 | 1364 |
Dimensions - Imperial
Dimensions - Metric
Frequently Asked Questions
Common questions about Sunmach Duplex Button Head Cap Screws / Stainless Steel Button Head Cap Screws
Duplex Button Head Cap Screws are specified for low-profile fastening in aerospace, subsea equipment, medical devices, and chemical machinery where head protrusion must be minimized. Their compact domed design ensures clean, snag-free interfaces while maintaining extreme resistance to structural loading.
Stainless Steel Button Head Cap Screws offer an ultra-low profile and a smooth domed finish that is ideal for space-constrained or aesthetic applications. This specialized design distributes clamping forces evenly over a wide area, reducing local stress and preventing head shearing.
Duplex Button Head Cap Screws provide excellent long-term resistance to saltwater environments due to their balanced dual-phase structure and high pitting resistance equivalent. This advanced metallurgy prevents localized crevice corrosion and stress cracking under dynamic wave action.
Stainless Steel Button Head Cap Screws made from Duplex 2205 deliver nearly double the physical yield strength of standard 316L and are much more cost-effective than titanium, making them the premier choice for securing heavy-duty joints that require high tensile holding capacity and excellent corrosion resistance.
Duplex Button Head Cap Screws are delivered with complete material traceability, including EN 10204 3.1 Mill Test Certificates and positive material identification. These rigorous audits guarantee absolute material purity and structural compliance, ensuring zero-failure performance in critical offshore projects.