01
Bolt Square Neck
Bolt Square Neck ISO 8677 are fasteners with specific design and performance requirements. The head of ISO 8677 Bolt Square Neck is made into a hemispherical shape, which makes the bolt head smoother and less likely to hook on other objects. A square neck is made under the head to embed in the…
02
Round Head Short Square Neck Bolts
ASME B18.5.2.1M standard of Round Head Short Square Neck Bolts developed by the American Society of Mechanical Engineers (ASME) that specifies detailed specifications and dimensions for round head square neck bolts. Round head carriage bolts have a round head and square neck, this design is often…
03
Metric Round Head Bolt
Metric round head bolts refer to round head bolts whose specifications, sizes or shapes do not conform to metric standards (such as ISO, DIN, etc.). Metric round head bolts can be classified according to different stress states, construction processes or other characteristics. Metric round head…
04
Steel Metric Round Head Bolts
Steel metric round head bolts are characterized by their unique head and neck design. The round head of the bolt provides good force distribution, making the connection more secure and reliable. The neck of the bolt is oval, which provides a suitable connection space, facilitates installation and…
05
IFI 536 Hexagon Head Flange Bolts
IFI 536 hex flange bolts follow specific standards and are available in a wide range of sizes, such as M12×100 (P1.75). These specifications ensure the bolts provide reliable connections in a variety of applications. The bolt head is designed in a hexagonal shape, making it easier to tighten or…
06
DIN1662 Hex Head Flange Bolts-Small Series
DIN EN1662 small hexagon head flange face bolts are fasteners that comply with DIN EN 1662 standards. DIN EN 1662 is a European standard that specifies the dimensions, tolerances, materials and performance requirements for hexagonal flange bolts. This type of bolt is designed with a small…
07
Round Head Square Neck Bolts ASME B18.5-2
Round head square neck bolts in ASME B18.5-2 are generally considered a type of carriage bolt. Carriage bolts, also known as round head square neck screws, are bolts with a round head and a square neck. Round head square neck bolts have a round head and a square neck. This design can provide a…
08
DIN 6921 Hex Head Flange Bolts
Hexagonal flange bolts are fasteners composed of a hexagonal head, a flange plate and a screw rod.Our company specializes in the production of flange face bolts. The detection and testing methods of flange surface bolts include hardness test, tensile test, impact test, torque coefficient test,…
09
ASME B18.5.2.2M Metric Round Head Square Neck Bolts
Carriage bolts are divided into large semi-round head carriage bolts and small semi-round head carriage bolts according to the head size. PicturesProduct drawing Product SpecificationSizeM5M6M8M10M12M14M16M20M24P0.811.251.51.75222.53dsmax5.486.488.5810.5812.714.716.720.8424.84min4.525.527.429.4211.…
10
DIN 835 Double-ended Bolts bm=2d
DIN 835 bm=2d stud bolts, also known as stud screws or studs, have threads at both ends, and the middle screw part can be thick or thin. The main feature of this bolt is that the length (bm) of its screwed end is equal to twice its diameter (d), that is, bm=2d. This kind of stud bolts are widely…
11
ISO 8677 Cup Head Square Neck Bolts with Large Head
Carriage bolt is a type of fastener consisting of a head and a screw .PicturesProduct drawingProduct SpecificationSizeM5M6M8M10M12M16M20P0.811.251.51.7522.5e min5.97.29.612.214.719.924.9dkmax13162024303846min11.914.918.722.728.736.444.4dsmax5.486.488.5810.5812.716.720.84min4.485.357.199.0310.8614…
12
ISO 8678 Cup Head Square Neck Bolts with Small Head and Short Neck
Carriage bolt needs to be matched with a nut and is used to fasten two parts with through holes. PicturesProduct drawingProduct SpecificationSizeM6M8M10M12M16M20P11.251.51.7522.5dk max14.21822.326.63543dsmax6810121620min5.357.199.0310.8614.718.38e min7.6410.212.815.3720.5725.73kmax3.64.85.86.88.…
13
IFI 111 Hex Head Flange Bolts
Hex Head flange bolts of grade 8.8 and above are made of low carbon alloy steel or medium carbon Steel, which needs to undergo heat treatment , is commonly known as high-strength bolts. PicturesProduct drawingProduct SpecificationSize1/45/163/87/161/29/165/83/4Pitch20|28|3218|24|3216|24|3214|20|…
14
ASME B18.2.1-8 Hex Head Flange Bolts
Hex Head flange bolts are fasteners composed of a hexagonal head, a flange plate and a screw rod.PicturesProduct drawingProduct SpecificationSize1/45/163/87/161/29/165/83/4P20|28|3218|24|3216|24|3214|20|2813|20|2812|18|2411|18|2410|16|20dsmax0.250.31250.3750.43750.50.56250.6250.75min0.2450.30650.…
15
IFI 536 Hex Flange Bolts
Hexagonal flange bolts performance grade label consists of two parts of numbers, which represent the nominal tensile strength value and the yield strength ratio of the bolt material.Product drawingProduct SpecificationSizeM5M6M8M10M12M14M16P0.811.251.51.7522dc max11.413.61720.824.728.632.…
16
DIN 603 Cup Head Square Neck Bolt
Round head square neck bolts under the DIN 603 standard, often also known as carriage screws or guardrail bolts, are a type of fastener with specific design and functional requirements. DIN 603 bolts have a round head design and square neck structure. This design allows the bolts to provide more…
17
Hex Socket Head Cap Bolt
The Hex Socket Head Cap Bolt Screws DIN 7984 produced by Jinan Star possess unique characteristics. Appearance: Low cylinder head and hexagonal socket for a neat, compact design; Performance: Made of high-quality materials for durability and strength. Resistant to corrosion and able to endure…
18
Hexagon Socket Countersunk Head Screws
Hexagon Socket Countersunk Head Screws ISO 10642 are essential fastening elements with unique features.Hex Socket Csk Screw have a countersunk head design, which can be flush with the surface when installed. The hexagon socket in the head allows for easy installation and removal using a hex key,…
COMPANY PROFILE
Jinan Star Fasteners Co., Ltd. is a high-tech enterprise specializing in the production of daily fasteners. There are more than 300 employees, including 28 managers, 4 senior engineers and 13 with intermediate professional titles. In 2022, the company will achieve operating income of 300 million yuan and earn 227 million yuan in foreign exchange from exports.
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60
Nearly 60 years of production experience
300
Existing employees: 300
55
The company has obtained 55 national patents
227000000
Earned 227 million yuan in foreign exchange from exports
APPLICATION
Energy industry
Machinery and equipment
Automotive
Ship
Railway construction
Building industry
Jinan Star's 2025 strategic clarification meeting was successfully held to draw a new blueprint for development
Recently, Jinan Star held a 2025 strategic clarification meeting in the company's third-floor conference room. The meeting brought together core backbones and senior leaders from various departments of the company, aiming to deeply analyze the fastener market situation, clarify the company's future
Feel at home, build a fastening future together: Jinan Star welcomes new and old customers to visit
Recently, Jinan Star welcomed several important guests-new and old customers from all over the world. Our company welcomes the arrival of all customers with a sincere attitude.At the exchange forum, the company leaders had in-depth communication with new and old customers. The company leaders
What are the three types of bolts?
Bolts can be classified into several types based on different criteria. Here are three common classifications:1. Based on the Head ShapeHexagonal - Headed Bolts:These are the most commonly used types of bolts. The top of the bolt is hex, so you can use a wrench to tighten or loosen it. Hex bolts
[Good News] Congratulations to Jinan Star for its "Lightweight High-Performance Engineering Fastener Research Center" being recognized as Jinan Engineering Research Center by the Municipal Development and Reform Commission
Recently, Jinan Star got good news. The "Lightweight High-Performance Eng. Fastener Research Ctr." was recognized by the Municipal Dev. & Reform Comm. as Jinan Eng. Research Ctr. This shows its sci. research & innovation in eng. fasteners is recognized by the official and gives momentum to
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