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1/8" 1/4" 3/8" 1/2" NPT SS304 Stainless Steel Hex Head Socket Hex Bolt
US$1.20-2.20
1,000 Pieces
Sample price:US$10.00/piece.Request sample
Product profile
Customization
AvailableMaterial
Carbon SteelType
Hexagon HeadModel NO.
NPT boltConnection
Common BoltHead Style
HexagonalStandard
DIN, ANSI, GBGrade
10.9Application
Machinery, Chemical Industry, Environmental, BuildingFinish
BlackHeat Treatment
Yes Grade 12.9Magnet
YesSalt and Spry Test
YesTransport Package
Carton BoxSpecification
21*20*20Trademark
StableOrigin
ChinaHS Code
8708999990Production Capacity
1000000000Key features
High Strength Material: Made from Carbon Steel Grade 10.9, ensuring high mechanical strength and durability for engine applications.
Effective Oil Sealing: Designed with a brass gasket and precise flatness to prevent oil leakage from the engine oil sump.
Custom Heat Treatment: Available with heat treatment to achieve HRC:32 hardness, enhancing mechanical properties and seal integrity.
Corrosion Resistance: Undergoes salt spray testing and hydrogen embrittlement relief to ensure long-term rust resistance.
Cold Forming Process: Manufactured via cold forming without heating, saving costs while maintaining automatic production efficiency.
Strict Quality Control: Subjected to tensile tests and mechanical performance checks to meet specific grade values.
Company profile

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤4.42h
AI-Powered supplier vetting
SummaryJinjiang Sidebo Technology Industrial Co., Ltd. is identified as both a trading company and manufacturer/factory in China, with nearly 40 years of experience in stamping, welding, bending, plastic injection, and aluminum die casting. Its stated product range focuses on automotive engine and transmission components, supported by three production lines, 11–20 quality-control staff, and documented production quantities for several products. The company carries out TS 16949 quality controls across raw materials, production, and after-sales processes. It offers sample-, design-, flexible-, and minor-customization, but does not provide 3D software design, ODM, SDK, or overseas service infrastructure. No new products were reported in the past year. Formal service assessment, corrective-action, approved-supplier, and complaint-handling procedures are absent. Financial capacity data is listed for multiple years, but the slices provide no assessable financial results. Customer cases and named brand OEM evidence are...
Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, is a limited company, and operates in Fujian, China. Its product scope is concentrated on oil pans, timing covers, oil pickups, dipsticks, and related automotive components.
CertificationsThe company states that TS 16949 is fully implemented across raw-material inspection, production processes, and after-sales activities. A CTI audit is also recorded for the period from 2026-04-10 to 2027-04-09, but the audit type and evaluation result of 0 are not explained sufficiently to establish an additional certification advantage.
After-Sales capabilityTS 16949 is stated to cover after-sales processes, but the supplier has no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling. This is explicit evidence of a deficiency in documented after-sales management.
R&D capabilityThe supplier is identified as a professional technical supplier and has 6–10 years of total R&D-engineer experience, but it reported no new products in the past year and does not provide ODM, SDK, or 3D software design services. The evidence therefore shows some technical capability but a clear limitation in recent and software-related innovation services.
Production capacityThe supplier reports nearly 40 years focused on stamping, welding, bending, plastic injection, and aluminum die casting, operates three production lines, and has 11–20 quality-control staff. It also provides product-specific output quantities for engine oil pans, dipsticks, timing covers, transmission oil pans, and oil pickups, supporting an established automotive-component production capability.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, flexible customization, and minor customization. However, it does not provide 3D software design services, so customization is supported without evidence of advanced 3D design assistance.
Product Q&A
Q:What is the material and grade of the oil plug?
A:
The oil plug is made of Carbon Steel with Grade 10.9, providing high strength for engine applications.
Q:How does the oil plug prevent oil leakage?
A:
It uses a brass gasket and requires specific torque to maintain flatness between the plug and seat, ensuring a tight seal.
Q:Is heat treatment available for the oil plug?
A:
Yes, heat treatment is available to increase hardness to HRC:32, which improves mechanical properties and seal performance.
Q:What testing is performed on the oil plugs?
A:
We perform tensile tests, mechanical performance tests, and salt spray tests to ensure strength and corrosion resistance.
Q:What is the lead time for production?
A:
Peak season lead time is one month, while off-season lead time is within 15 workdays.
Send Inquiry
*To:
Jinjiang Sidebo Technology Industrial Co., Ltd.
Jinjiang Sidebo Technology Industrial Co., Ltd.*Content:
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