Product Description:
Product categories: 8C series, 8D series, 8B series, 8J series, 8F series……
Flat nuts are fasteners with a thickness less than standard nuts, primarily used for connecting and securing bolts. Their key feature is their flat structure, enabling fastening within confined spaces. Flat nuts are the preferred solution when axial installation space is limited in equipment or structures, but a reliable threaded connection is still required.
Features and advantages:
Space-saving, easy installation, good load-bearing capacity, multiple material options.
Product Specifications
| Flat nuts are mainly distinguished by thread specifications and cross-flat dimensions. | |
| 8C-12Z M12 S17 8C | 8D-26Z M26 S36 8D |
| 8C-14Z M14 S19 8C | 8D-36Z M36 S46 8D |
| 8C-16Z M16 S22 8C | 8D-45Z M45 S55 8D |
| 8C-20Z M20 S24 / S27 8C | 8B-02Z -- S14 8B |
| 8C-26Z M26 -- 8C | 8B-04Z -- S19 8B |
| 8C-42Z M42 S50 8C | 8J-04Z -- S17 8J |
| 8C-52Z M52 S60 8C | 8F-06Z -- S22 / S27 8F |
| Some models (such as those marked with an asterisk) may have special thicknesses or non-standard side dimensions. Please refer to the drawings for confirmation. | |
Material
316 stainless steel
suitable for highly corrosive environments such as marine and chemical industries.
304 stainless steel
suitable for general humid or ordinary corrosive environments.
35# steel / 45# steel
High-quality carbon structural steel, suitable for mechanical connections with high strength requirements, and the surface can be galvanized, blackened and other treatments.
Appearance
Surface treatment
Stainless steel is natural (bright or matte); carbon steel is usually blue-white zinc, yellow zinc, or blackened.
Shape
Hexagonal or square, thin, with chamfered or unchamfered edges.
Design
Featuring a slim design, typically hexagonal, for easy wrench operation in confined spaces. Some models (such as the 8F series) have a flange face to increase the contact area and prevent loosening.
OEM customization
1.
Size
Non-standard threads, special cross-flat dimensions (S value), and special thicknesses (Z value) can all be customized.
2.
Surface treatment
Specific plating or coating can be provided according to customer requirements.
3.
Logo
Customizable laser marking or embossing of brand logos.
Quality control
Production process:Raw material inspection → Cold heading/hot forging → Tapping → Surface treatment → Full inspection/sampling inspection → Packaging.
Quality control includes random checks on hardness and strength (for carbon steel products, the guarantee level shall not be lower than level 8).
100% inspection of threaded go/no-go gauges (critical batches).
Quality commitments include material reports.
After-sales service
- Packaging and logistics transportation packaging:Inner packaging is moisture-proof plastic bag + cardboard box, and outer packaging is standard export carton or customized pallet.
- Transportation: We support express delivery, logistics, and sea freight. You can choose the optimal method based on the order volume.
- Installation and commissioning of standard parts require no commissioning; a recommended torque value reference table is provided.
- Maintenance recommendations include regularly checking the tightening torque, and using threadlocker in vibrating environments.
- Accessories support include flat washers, spring washers, or anti-loosening washers.
Application areas
Small-batch sample customization is supported, with sample delivery time typically ranging from 3 to 7 days. Sample fees can be refunded with bulk orders.
Construction machinery
Track shoes and skid plates for excavators and loaders.
01
Rail transit
installation of track pressure plates and interior structure of carriages.
02
Power facilities
Busbar trunking and insulator fixing for distribution cabinets.
03
Automated equipment
end effector of robotic arms and grippers.
04
Building curtain wall
dry-hanging components and keel connections for stone curtain walls
05
Prices are tiered based on material, specifications, and purchase quantity. Standard specifications are in stock, and prices fluctuate with market raw material prices.
Payment methods include bank transfer to corporate accounts, WeChat/Alipay; new customers typically pay in advance or a 30% prepayment plus 70% payment before shipment; long-term clients can apply for monthly settlement.
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