Stainless Steel Shaped Screw

Product Introduction

Dayyi Standard Components Co., Ltd. was established in 2014, specializing in the production and sales of building hardware (door and window accessories, locks), tool hardware (manual and electrical tools), home hardware (bolts, nuts), mechanical hardware, auto and motorcycle parts, etc. We provide OEM/ODM customization services and support for non-standard part design. Our production covers the entire value chain, from raw material processing to surface treatment, with complete certifications and compliance with European and American export standards. We have a production capacity guarantee and the delivery cycle is ≤ 30 days. The company registered the "Dayyi/RIYI" trademark in 2015 and has passed ISO9001:2015 quality management system certification. With 10 years of industry experience, we serve the automotive, mechanical, and construction industries. We are committed to providing you with one-stop fastener procurement, supporting OEM manufacturing, customizing based on drawings and samples, large and small batch customization, enjoying factory direct pricing advantages, and providing AutoCAD product design drawings. We will become your partner in China and look forward to cooperating with you to achieve cost reduction and efficiency improvement, and achieve a win-win situation.

The stainless steel square head stepped bolt is a type of fastener with a square head and a stepped design on the shaft. It is usually made of 304 or 316 stainless steel through cold stamping processing. It has excellent corrosion resistance and high strength, and is suitable for use in harsh environments such as machinery, construction, chemical industry, and ships.

Product features

Material: 304/316 stainless steel

Size: M10x35

Application: Heavy machinery: components requiring rust prevention or frequent disassembly

Construction/Decoration industry: outdoor structures, stainless steel railings, etc.

Shipbuilding/Chemical industry: high-corrosion environment

Food industry: equipment with high hygiene requirements

Advantages

Strong corrosion resistance, naturally rust-proof, suitable for humid and acidic environments, longer service life than ordinary carbon steel bolts, no need for additional coating, avoiding corrosion problems caused by coating detachment

Head design, easy installation, the square head can be tightened with a regular open-end wrench or adjustable wrench, no special tools required, convenient for manual operation, the design of the head is suitable for manual adjustment or temporary fixation, more flexible during maintenance.

Hygiene and aesthetics, stainless steel is non-toxic and odorless, in line with hygiene standards for food and medical equipment, the matte or polished surface of the appearance is suitable for decorative occasions where exposure is required.

Low maintenance cost, maintenance-free, stainless steel is resistant to aging, no rust treatment is needed for long-term use, reducing maintenance frequency and cost.

Notes: Material certification: confirm 304/316 mark, material report

Size matching: measure the width of the head's opposite sides, the thread diameter and length

Strength grade: The strength of stainless steel bolts is usually A2-70 (304) or A4-80 (316), the numbers represent the strength (such as 700 MPa)

Dynamic load scenarios require anti-loosening measures

For heavy-duty scenarios, it is recommended to use alloy steel

Common problems: Slip risk: The square head may slip under heavy force, it is recommended to use a suitable wrench

Anti-loosening measures: may be combined with nylon locking nuts or thread sealant

Packaging issues: Default bulk wholesale, can (carton + pallet) (carton + wooden pallet)

FAQ

Q1: How much difference is there in corrosion resistance between 304 and 316 stainless steel square head bolts? Which one is more suitable for use in the seaside?

A1: 304 stainless steel is resistant to weak acids, weak alkalis and common atmospheric corrosion, and is suitable for daily environments. 316 steel contains molybdenum and is resistant to salt fog and seawater corrosion, making it suitable for marine or industrial environments.

Q2: What torque is required for installing the square head bolts? Will over-tightening cause the corners to wear out?

A2: The torque control for the square head bolts needs to be determined based on the strength grade of the material and the size of the bolt. Over-tightening may cause the threads to slip, and the square head to be subjected to concentrated force, resulting in the corners being prone to deformation.

Q3: Do stainless steel square head bolts support non-standard customization (such as adding longer threads)?

A3: Yes

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