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Inch Series Carbon Steel Construction Square Head Bolts
US$0.30-3.00
10,000 Pieces
Sample price:US$250.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Square Head

Model NO.

ASME B 18.2.1 TAB1

Connection

Common Bolt

Head Style

Square

Standard

DIN, Non-Standard

Grade

4.8

Finish

Blue-White Zinc Plated

Quality

High Strength

Price

Reasonable Price

Delivery

Quicky Production Time

Reply

Within 48hours

Surface

HDG,Zp,Black

Packing

Customized

Transport Package

Small Box, Color Box, PE Bag

Specification

1/4, 5/16, 3/8, 7/16, 1/2, 1''

Origin

China

HS Code

7318151001

Production Capacity

500tons/Month

Key features

Customized Surface Finish: Options include HDG, Zinc Plated, Black, Phosphate, Dacromet, and Geomet.
High Strength Material: Constructed from Carbon Steel with grades like 4.8, 35K, 45K, 40Cr, and Stainless Steel.
Wide Size Range: Available in sizes from 1/4 inch to 1-1/2 inch with various lengths.
Standard Compliance: Conforms to DIN, ISO, ANSI, ASME, BSW, and JIS standards.
Custom Non-Standard Items: Company customizes non-standard items according to customer requirements.
Reasonable Pricing: Offers competitive and reasonable prices for high-quality fasteners.
Fast Response Time: Inquiries are answered on the same day or by the 2nd working day.
Global Export Experience: Exports to Europe, North America, South America, Russia, Mid-East, and Asia.

Company profile

Ningbo Mianxuan Import &Export Co., Ltd.
High Repeat Buyers ChoiceYears of Export ExperienceR&D CapabilitiesODM Services
Business Type: Manufacturer/FactoryExport Year: 2014-07-01Nearest Port: Ningbo, Zhapu, ShanghaiAverage Response Time: ≤3.13hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryNingbo Mianxuan Import & Export Co., Ltd. is identified as a China-based manufacturer/factory offering vehicle parts, CNC machining, stamping, casting, die-casting, fasteners, plastic, and rubber products. It reports TS 16949 and ISO 9001 certifications, more than 10 production lines, 6–10 quality-control staff, and shipment inspection reports with material certificates. The supplier provides 3D software design, ODM, and several customization options, but reports no new products in the past year, no SDK, and no OEM service for popular brands. Service-management documentation is weak: no written procedures or records are reported for assessments, corrective actions, or complaint handling. It has no in-stock capability, overseas warehouse, or overseas showroom. Financial records are indicated for 2023–2025, but their results are not provided, so financial credibility cannot be determined. No customer cases are supplied.
Supplier typeThe supplier is explicitly identified as a manufacturer/factory and limited company in Ningbo, Zhejiang, China. Its stated scope covers fasteners, metal products, machinery, vehicle parts, CNC machining, stamping, casting, die-casting, plastic, and rubber parts, indicating broad manufacturing and industrial-product coverage.
CertificationsThe supplier reports holding TS 16949 and ISO 9001 management-system certifications. It also states that each shipment will include an effective inspection report and corresponding material certificate, providing explicit evidence of documented quality-related controls.
After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling. It also lacks in-stock service, overseas warehouse, and overseas showroom capabilities, indicating a documented weakness in after-sales and service infrastructure.
Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, and a product range spanning vehicle parts, CNC machining, stamping, casting, die-casting, fasteners, plastic, and rubber parts. It is located near Ningbo and Shanghai ports and reports 21 qualified suppliers, but has no inventory capability and peak-season lead-time data is inconsistent or unclear.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, 3D software design services, and ODM services. These statements provide direct evidence of broad product and design customization capability.

Product Q&A

Q:What surface finishes are available?
A:
We offer various finishes including Black, Phosphate, Zinc Plated, HDG, Dacromet, and Geomet.
Q:What materials are used for these bolts?
A:
Materials include Carbon Steel grades such as Q195, 35K, 45K, 40Cr, 35Crmo, 42Crmo, B7, as well as Stainless Steel SS304 and SS316.
Q:Can you produce non-standard items?
A:
Yes, we customize non-standard items according to customer requirements and specifications.
Q:What is the lead time for production?
A:
The lead time is 30-50 days. During off-season, it can be within 15 workdays, while peak season may take one month.
Q:What standards do your products conform to?
A:
Our products conform to DIN, ISO, ANSI, ASME, BSW, and JIS standards.

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