How do you ensure product quality?

We implement full-process quality control. From raw material procurement to finished product delivery, dedicated personnel conduct strict inspections at every stage. We also support providing third-party inspection reports (such as SGS).

What is the delivery time?

Standard parts usually take 7 to 15 days, while custom-made parts require 15 to 30 days (specifically depending on the order quantity and the complexity of the process).

Do you support sample delivery? Is there any charge?

For in-stock items, we can provide free samples, but the customer needs to cover the shipping cost. For out-of-stock samples and custom-made samples, a cost fee will be charged.

What are the payment methods available?

We accept T/T , L/C, PayPal, and Alipay International escrow transaction. The specific method can be negotiated.

Fast Delivery DIN7991 Stainless Steel SS304 SS316 A2-70 A4-70 M6 M8 M10 Full Thread Polished Blue Nylon Patch Countersunk Hexagon Socket Locking Screws

Name: Fast Delivery DIN7991 Stainless Steel SS304 SS316 A2-70 A4-70 M6 M8 M10 Full Thread Polished Blue Nylon Patch Countersunk Hexagon Socket Locking Screws
Brand: Shanghai Borui Metal Products Co., Ltd.
SKU: 2246805175

Shanghai, ChinaShanghai Borui Metal Products Co., Ltd.

US$2.00

100-999 Pieces

US$1.00

1,000-9,999 Pieces

US$0.50

10,000+ Pieces

Product specifications

Diameter

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Countersunk Head

Model NO.

DIN7991 Nylon Patch Locking Screws

Groove

Hexagon

Connection

Common Bolt

Head Style

Counter Sunk Bolt

Standard

DIN, GB, ANSI, BSW, JIS, GOST

Grade

SS304 SS316

Available Material

Stainless Steel / Alloy Steel/ Mild Carbon Steel

Available Grade

Class 4.8 8.8 10.9 12.9

SAE Grade

SAE Grade2 Grade5 Grade8

Stainless Steel Grade

A2-70 A2-80 A4-70 A4-80

Available Coating

Dacromet/ Black Oxide/ HDG/ PTFE/ Galvanized

Available Metric Size

M8 M10 M12 M14 M16 M18 M20 M22 M24 M30 M36 M40 M48

Available Imperial Size

1/4" 3/8" 1/2" 5/8" 3/4" 1" 1-1/2" 1-3/4" 2" 2-1/2

Thread Type

Unc/ Unf/ Unef/ Bsw/ Bsf/ Tpi

Thread Length

Full Thread / Half Thread

Production Type

OEM ODM Supported

Mechanical Property

High Tensile Strength/ High Strength Structural

Supported Testing Item

Tensile Test/ Hardness/ Salt Spraying/ H.D.G Thick

Substitute Product

Nylon Patch Screw / Locking Screw

Transport Package

Carton + Pallet

Specification

M4 - M100 (1/8" - 4")

Trademark

Origin

China

HS Code

731815

Production Capacity

350000 / Year

Key features

Comprehensive Material Options: Carbon steel, alloy steel, stainless steel (304/316), brass, copper, aluminum, and titanium alloy available.

Wide Size Range: Diameter M4 to M100 (1/8 to 4 inches) and lengths from 5mm to 12 meters.

Extensive Standard Compliance: Meets DIN, GB, ISO, JIS, ANSI, ASME, BSW, and GOST standards.

Diverse Surface Finishes: Plain, black oxide, zinc plated, HDG, nickel, chrome, PTFE, Dacromet, and more.

OEM and ODM Support: Full customization from samples or designs with professional engineering support.

High Production Capacity: 15 production lines with 35,000 tons annual capacity and 1000 tons monthly supply.

Strict Quality Control: ISO 9001, CE, RoHS certified with full-process inspection and third-party reports.

Fast Delivery for Standard Parts: Standard parts delivered in 7 to 15 days; custom parts in 15 to 30 days.

Company profile

High Repeat Buyers ChoiceMulti-language PioneerExperienced TeamExhibition Experience

Shanghai Borui Metal Products Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤1.77hTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a Shanghai-based limited trading company with 41 employees, focused on fasteners and related metal, mechanical, plastic, rubber, electrical, and photovoltaic products. It offers sample-, design-, and full-customization services, as well as ODM and OEM services, and reports export sales of 71%–90%. In-stock service is available, but there is no overseas warehouse, showroom, agent, or branch. Financial records are identified for 2022–2024, but no financial values or performance conclusions are provided. Service-process evidence is weak: no written corrective/preventive-action or complaint-handling procedures or records are available, while quality-assurance status and fire-drill status are unknown. No certifications, customer cases, or production facilities are explicitly documented.

Supplier typeThe supplier is identified as a limited company and trading company, with 41 employees, no stated parent-group affiliation, and a Shanghai registered and physical address. Its stated product scope centers on fasteners and related industrial products.

After-Sales capabilityThe supplier has in-stock service capacity, but it has no overseas warehouse, showroom, overseas agent, or branch. More importantly, no written corrective/preventive-action procedures or records and no written customer-complaint procedures or records are available, indicating a documented after-sales process is not demonstrated.

R&D capabilityThe supplier lists research and development of metal products and hardware products, and offers ODM services. However, no SDK is available, and the information does not provide measurable R&D resources, patents, or development outcomes; the documented capability is therefore limited but present.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, and full customization, together with ODM and OEM services for popular brands. These statements provide direct evidence of broad customization and design-manufacturing service capability.

Product Q&A

Q:What is your company's main business?

We are a production and trade integrated fastener manufacturing and export company, integrating production and sales. Our main products include bolts, nuts, screws, washers, rivets and other standard and non-standard fasteners, which are widely used in construction, automotive, machinery, electronics and other industries.

Q:Where is your factory located?

Our factory is situated in Dongtai City, Jiangsu Province, China. It has 15 fastener production lines with an annual capacity of 35,000 tons, which can meet the demands of large-scale orders.

Q:Do you have export qualifications?

Yes, we have the right to operate import and export business and have passed ISO 9001 quality management system certification, CE certification, RoHS certification, etc., to ensure that our products meet international export standards.

Q:What materials of fasteners can you produce?

We can provide fasteners made of various materials such as carbon steel, stainless steel (304/316), alloy steel, copper, aluminum, titanium alloy, etc., and support customized surface treatments (such as galvanizing, Dacromet, hot-dip galvanizing, etc.).

Q:Do you support non-standard customization? What is the minimum order quantity (MOQ)?

We support non-standard customization (such as special sizes, threads, surface treatments, etc.). The MOQ needs to be negotiated based on specific customization requirements and product types.