What are the main applications for these screws?

They are primarily used for book binding, leather binding, and securing official papers or files.

How should the screws be stored and handled?

Keep in a dry warehouse. Do not use sharp tools to drive them or scratch them on hard surfaces to maintain the bright finish.

M4 Female and Male Chicago Screws Metal Binding Screws

Name: M4 Female and Male Chicago Screws Metal Binding Screws
Brand: Tianjin Spider Impex Co., Ltd.
SKU: 1932238022

Tianjin, ChinaTianjin Spider Impex Co., Ltd.

US$0.01-0.14

1,000 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Brass

Surface Treatment

Nickel-Plated

Model NO.

Chicago screw

Head Type

Round

Name

Chicago Screw

Production Capacity

20000/Month

Key features

Customizable Dimensions: Male screw diameter 4mm or as request; Female screw diameter 5mm or as request; Lengths adjustable.

Diverse Material Options: Available in Brass, Stainless Steel, Copper, or Black with Nickel plating.

Versatile Head Drive: Choose between smooth or slotted head drive types for different applications.

High Precision Finish: Features no burrs, scratch-free smooth surface, and rust-resistant properties.

Secure Fastening Design: Combines male and female screws to securely fasten workpieces like papers and files.

Bulk Packaging Available: Packed in bags, cartons, and pallets; 20 tons usually fit in a 20ft container.

Customization Service: Full customization available for Chicago Screws to meet specific requirements.

Eco-Friendly Production: Manufactured with environmental protection standards and high security.

Company profile

Tianjin Spider Impex Co., Ltd.

Tianjin, China

Business Type: Manufacturer/FactoryExport Year: 2017-12-04Nearest Port: TIANJINAverage Response Time: ≤2.73hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW

AI-Powered supplier vetting

SummaryTianjin Spider Impex Co., Ltd. is a China-based limited company identified as both a manufacturer/factory and a trading company, supplying dental consumables, equipment, and related products. It reports ISO 9001 certification, three production lines, 6–10 quality-control staff, and 6–10 years of R&D engineer experience. The supplier serves broad international markets, with 71%–90% of sales reportedly from exports, and is located near Tianjin port. It states that it provides after-sales service, stable supply, and quality control, but these claims are not independently substantiated in the provided information. Production lead time is stated as within 15 working days off-peak and 2–3 months during peak periods. Evidence of customer activity is limited to two recorded transactions, each associated with one buyer.

Supplier typeThe supplier is identified as a limited company in China and is variously classified as a manufacturer/factory and a trading company. Its stated business scope covers dental materials, consumables, laboratory equipment, orthodontic products, and related goods.

CertificationsThe supplier reports holding ISO 9001 certification and also mentions TUV Rheinland and CCIC trademarks or authorizations. The provided slices do not include certificate numbers, validity dates, or verification details, but they do provide explicit evidence of reported certification and authorization.

After-Sales capabilityThe supplier explicitly presents efficient after-sales service as a company tenet and states that it is responsible for after-sales work for consumables and equipment products. However, no staffing, service process, response-time, or customer-performance evidence is provided.

Production capacityThe supplier reports three production lines, 6–10 quality-control staff, ISO 9001 certification, and stable supply and quality control. It states an off-peak lead time within 15 working days, while peak-season fulfillment may require 2–3 months, indicating documented production capacity but substantial peak-season variability.

Client casesThe supplier states that its disposable dental apparatus are sold across multiple international regions, and its reported export markets span South America, Europe, the Middle East, North America, Asia, Oceania, and Africa. Trade records show two transactions involving Natural8 Dental Laboratory Inc. and Dento Correct, but the documented customer and transaction sample is limited.