M6 M8 High Quality Galvanized Retaining Hex Head Coupling Nut
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Product Highlights
- Wide Material Selection: Available in Stainless Steel, Carbon Steel, Brass, Titanium, and various alloys.
- Multiple Finish Options: Plain, Zinc Plated, Yellow Zinc Plated, Hot Dip Galvanizing, Dacromet, and Nickel Plated.
- OEM and ODM Support: Custom size, packaging, and design services available for specific needs.
- Comprehensive Standards: Meets DIN, ANSI, GB, JIS, GOST, and BSW standards for global compatibility.
- High Strength Grades: Available in grades ranging from 4.6 up to 12.9 and Class 2 to 8.
- Versatile Thread Types: Supports Metric Coarse, Metric Fine, UNC, UNF, BSW, and BSF threads.
- Stable Fastening Design: Extended design with mounting holes connects two bolts for reliable fastening.
- Global Market Experience: Supplies customers in over 55 countries with high-quality fasteners.
Product Attributes
- Customization
- Available
- Material
- Stainless Steel
- Type
- Hexagon Head
- Model NO.
- hex coupling nut
- Connection
- Hinged Bolts
- Head Style
- Hexagonal
- Standard
- DIN, ANSI, GB, JIS, GOST, BSW
- Grade
- 8.8
- Transport Package
- Poly Bag, Small Box, Carton+Pallet
- Specification
- BULK IN 25KGS CARTON/ PALLET
- Trademark
- EN
- Origin
- Shanghai
- HS Code
- 7318160000
- Production Capacity
- 1000 Tonnes/Month
- Package Size
- 10.00cm * 5.00cm * 2.00cm
- Package Gross Weight
- 0.300kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of M6 M8 High Quality Galvanized Retaining Hex Head Coupling Nut
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Product Description
A coupling nut, also known as a long nut, sleeve nut, or barrel nut, is a specially designed extended fastener with mounting holes at both ends.This design allows it to be connected with two bolts or threaded rods at the same time for a stable and reliable fastening effect.
| Product Name: | M6 M8 High Quality Galvanized Retaining Hex Head Coupling Nut |
| Standard: | DIN 6334,ANSI/ASME B1.1 |
| Thread: | Metric Coarse, Metric Fine, UNC, UNF, BSW, BSF. |
| Gread: | A2-70 A2-80 A4-70 A4-80 A8 Class 4.6 4.8 5.6 6.8 8.8 10.9 12.9 Grade 2 5 8 |
| Material: | Carbon steel: Q235, A36, A572, C1006, C1008, C1010, C1018, C1018A, C1022, C1035K, C1045K, 12L14.etc Stainless steel: 253MA,SS201,202,301,302,303,304,304L,309,310S,314,316,316L,316Ti,317L,321,347,410,416,420,430,435,904 Aluminium: AL6061, AL6063, 7075 etc. Titanium or titanium alloy: TAD, TA1-TA8, TB2, TC1-TC10 etc. Brass: C36000, C37700, C38500, C26800, C21000, C3602, C3604, H59, H62, H65, H68, H70, H90, etc. Alloy steel: SCM435,10B21,40Cr, C10B33 Precipitation hardening steel: 17-7PH Urea steel: 724L, 725LN Superalloy: GH4169, GH4145, GH2132 Nickel Alloy: Nickel 200, Nickel 201 Non-metallic: Zirconia Ceramic, PFA, Polypropylene, PVDF, polyphenylene sulfide, Polycarbonate, PEI, PTFE, PEEK, PVC, fiberglass, PA66 nylon, POM, Polyethylene. Duplex Stainless Steel: S32750, S32760, S2205, S2507,F51, F53, F55, F60, F61, 2205 Steel: C15, C35, C45(K1045), S45C, C46(K1046), C20, etc Iron: 12L13,12L14,12L15 etc. Corrosion-resistant alloy: XM-19, C4, Alloy20, Alloy28, Alloy31, 904L, 318 Copper: Brass, Phosphor bronze, Silicon bronze, Red copper, Beryllium copper and Copper etc. Bronze: C51000, C52100, C54400, etc. |
| Finish: | Plain, Black, Zinc Plated(ZP), Yellow Zinc Plated (YZP)and Hot DIP Galvanizing(H. D. G. ), Dacromet, Nickel Plated, Brass Plated. |
| Packing: | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand |
| Payment term: | L/C ,T/T , D/P , Western Union. |
| Leading Time : | 20-30 days or based on order required |
| Support: | OEM, ODM,Custom size, packaging, design, etc. |
Product Details
We supply barrel nuts of different materials to meet the needs of different industrial scenarios:
Stainless steel is available in 201 304 316 316 L and other models. It has a beautiful appearance and strong anti-corrosion
performance.
Carbon steel has high strength and low price. The surface can be galvanized, Dacromet, and other treatment methods to enhance weather resistance.
Brass material has strong conductivity., commonly used in the electrical and electronic industries.
supports the customization of other special materials, which can be flexibly selected according to your needs.
Sleeve Nut By Feature
We have a variety of sleeve nuts, including coupling nuts that can be installed with threaded rods, countersunk closed-end sleeve nuts, extended long sleeve nuts, sleeve rivet nuts, sleeve screw nut sets and cross slot barrel nuts, etc.
The first manufacturer of high-strength and high-quality stainless steel fasteners production-oriented enterprises, breaking the long-term dependence on imports of such products situation.
The founder Ms Jane has Been doing this industry for more than 10 years ,though a young lady .
6 years working experiences for fasteners in one world's top 500 company, 6 years working for T&Y hardware industry .
Our customers are from more 55 countries ,we are the nominated suppliers for the largest producer of household from Sweden , National Electric Power Company from Israel Etc
For T&Y Hardware and Jane, Quality is everything , we won't sacrifice our quality for the winning more market.

T&Y Hardware focuses on the production and supply of all kinds of bolts (including hex bolts, flange bolts and other standard parts and non-standard products), nuts (such as hex nuts, lock nuts, spring nuts, etc.), washers (flat washers, spring washers, lock washers), screws (mechanical screws, self-tapping screws, wood screws), anchors (sleeve anchors, chemical anchors, wedge anchor), threaded rods (full thread studs, double-headed studs, weld studs), high-precision stamping parts and CNC precision machining parts.




Q1. How to ensure that every process's quality?
A1:Every process will be checked by our quality inspection department which insures every product's quality. In the production of products, we will personally go to the factory to check the quality of products.
Q2.How long is your delivery time?
A2:Our delivery time is generally 30 to 45 days. Or according to the quantity.
Q3. What is your payment method?
A3:30% value of T/T in advance and other 70% balance on B/L copy.
For small order less than 1000USD, would suggest you pay 100% in advance to reduce the bank charges.
Q4.Can you provide a sample?
A4:Sure, Our sample is provided free of charge, but not including courier fees.
About the Supplier
This supplier has been audited by CTI. Verify the report on the official CTI website with ID "QIP-ASR2441832". Items marked "" are certified.
Company Profile
Shanghai T& Y Hardware industry, 21 years only working for standard and special fasteners making and developing, more than 394 customers are from 39 countries in the world., we are the nominated suppliers for the largest producer of household from Sweden, National Electric Power Company from Israel etc, T& Y Hardware has special full line sourcing to assistant your Fasteners business better and better
With ISO9001 certification, T& Y Hardware Quality is everything, we won't sacrifice our quality for the winning more market.
T & Y Hardware working as high tensile fasteners manufacturers in China, material for bolts are class 8.8, 10.9 and 12.9, common use are for automotive and machinery Industry.
As a hsfg bolts suppliers, raw material control are very important for T& Y Hardware, Hardness testing and tensile testing per ISO 267 standard requirement, if failed, we will keep as in unqualified fasteners.
Meanwhile, T& Y Hardware also working as stainless steel bolts and nuts supplier, common material for Stainless Steel are A2-70, A4-70, A4-80, Brass, Copper, Aluminum
Product ranges are including:
Bolts: Hex bolts, Hex cap A325, A490 heavy hex bolt; Hex lag screw, Hex flange Bolts, Carriage bolts and Special bolts per custom
Nuts: Hex nuts, square Nuts, Spring Nuts, T Nuts, Special Nuts
Washer: Flat washer, spring washer, tapper washer, more details about us, please feel free to contact, we will be here 24X7 on line
About Our Factory & Business Background
- Address
- Room1-1013, No 288, Rongxing Road, Songjiang, Shanghai, China
- Terms of Payment
- LC, T/T, PayPal, Western Union, Small-amount payment, Money Gram
- International Commercial Terms(Incoterms)
- FOB, CFR, CIF, DDP, CIP, FCA
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays - Nearest Port
- Shanghai, Ningbo
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2020-07-09
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Eastern Asia, Western Europe
FAQ
- How to ensure that every process's quality?
- Every process will be checked by our quality inspection department which insures every product's quality. In the production of products, we will personally go to the factory to check the quality of products.
- How long is your delivery time?
- Our delivery time is generally 30 to 45 days. Or according to the quantity.
- What is your payment method?
- 30% value of T/T in advance and other 70% balance on B/L copy. For small order less than 1000USD, would suggest you pay 100% in advance to reduce the bank charges.
- Can you provide a sample?
- Sure, Our sample is provided free of charge, but not including courier fees.
- What materials are available for the coupling nut?
- We supply barrel nuts in Stainless Steel (201, 304, 316), Carbon Steel, Brass, Titanium, and various other alloys to meet different industrial scenarios.
- Do you support customization for special needs?
- Yes, we support OEM, ODM, custom size, packaging, and design. We also support the customization of other special materials according to your needs.
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