Jiaxing Haina Fastener Co.,Limited
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Metric A2 A4 stainless steel 304 316 Full Thread Metric DIN603 Carriage Bolt
1. Product Description
Carriage screws by head size is divided into half of the head carriage screws (corresponding to standard GB / T14 and DIN693), small round head carriage bolts (corresponding to standard GB / T12-85). A bolts consisting of a head and a screw (with a threaded cylinder) are fastened to the nut and are used to fasten the connection of two parts with through holes.
Stainless steel carriage bolts, also known as stainless steel square neck bolts, the standard GB12, GB14, GB801 and DIN603. They are specifically divided into GB12 is a small round head, GB14 and DIN603 for the big round head, GB801 for the low neck. Choose different types for practical use.
Stainless steel carriage bolts production materials are: 667,668,200,201,304,316,316 L, 2520,904 L, 630, etc., the general factory prepared 667,668,200,201,304 spot, other materials will have to build custom.
A carriage bolt, coach bolt or round head square neck bolt is a form of bolt used to fasten metal to wood.
It is different from other bolts by its shallow mushroom head and that the shank cross-section of the bolt is circular for most of its length, as usual, but the portion immediately beneath the head is formed into a square section.This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank.
Carriage bolts were developed for use through iron strengthening plates on either side of a wooden beam. It is commonplace though to use them to bare timber, the squared section giving enough grip to prevent rotation.
Carriage bolts are extensively used in security fixings, such as the Brenton Bolt where the bolt must only be removable from one side. The smooth domed head and square nut below prevent the carriage bolt from being unlocked from the insecure side.
2. Specification
| ld | M5 | M6 | M8 | M10 | M12 | M16 | M20 |
| 16 | 4 | 6.9 | |||||
| 20 | 4.5 | 7.6 | 13.8 | 22.7 | |||
| 25 | 5.1 | 8.5 | 15.4 | 25.2 | |||
| 30 | 5.9 | 9.6 | 17 | 27.7 | 45.7 | ||
| 35 | 6.7 | 10.7 | 19 | 30.2 | 49.4 | ||
| 40 | 7.5 | 11.8 | 21 | 32.7 | 53.1 | ||
| 45 | 8.3 | 12.9 | 23 | 35.8 | 56.8 | ||
| 50 | 9.1 | 14 | 25 | 38.9 | 61.2 | 119 | |
| 55 | 9.9 | 15.1 | 26.9 | 42 | 65.6 | 126 | |
| 60 | 10.7 | 16.2 | 28.9 | 45.1 | 70 | 133 | |
| 65 | 11.5 | 17.3 | 30.9 | 48.2 | 74.4 | 141 | |
| 70 | 12.3 | 18.4 | 32.9 | 51.3 | 78.8 | 149 | 247 |
| 80 | 13.9 | 20.6 | 36.8 | 57.5 | 87 | 165 | 272 |
| 90 | 22.8 | 40.8 | 63.7 | 96 | 181 | 297 | |
| 100 | 25 | 44.8 | 69.9 | 105 | 197 | 322 | |
| 110 | 27.2 | 48.8 | 76.1 | 114 | 213 | 347 | |
| 120 | 29.4 | 52.8 | 82.3 | 123 | 229 | 372 | |
| 130 | 31.6 | 56.8 | 88.5 | 132 | 245 | 397 | |
| 140 | 32.8 | 60.8 | 95 | 141 | 261 | 422 | |
| 150 | 35 | 64.8 | 101 | 150 | 277 | 447 | |
| 160 | 107 | 159 | 293 | 497 | |||
| 180 | 119 | 177 | 325 | 547 | |||
| 200 | 131 | 195 | 357 | 597 |
| Raw materials | 1.Stainless steel: SS201, 202, 303, 304, 316, 321, 410, 420 2.Steel: C45(K1045), C46(K1046), C20 3.Brass: C36000(C26800), C37700(HPb59), C3850(HPb58), C27200CuZn37), C28000(CuZn40) 4.Bronze: C51000,C52100,C54400 5.Iron: 1213,12L14,1215 6.Aluminum: Al6061, Al6063 7.Carbon steel: C1006, C1010, C1018, C1022, C1035K, C1045 8.Alloy steel: SCM435, 10B21 | ||||||
| Application | Electronic equipment, machinery, buildings, sanitary fittings, sports equipment, etc. | ||||||
| Size scope | M3-M16 * 5-150mmL | ||||||
| Standard | ISO, DIN, AS/NZS, GB, ANSI, BSW, DIN and special standard according to the drawing. | ||||||
| Grade | Class 4.8, Class 6.8, Class 8.8, Class 10.9, Class 12.9,etc. | ||||||
| Surface finishing | Plain,polishing,zinc plated, Ni-plated,Tin-plated,hot-dip galvanized,black anodize,black lacquer,copper red, Chromate ,Chrome plated and more | ||||||
| Heat treatment | Tempering, hardening, spheroidizing, stress relieving. | ||||||
| Sample finished time | Within 7 days with available mould, for free. | ||||||
| Bulk delivery time | 10-15 working days or TBD based on the specific order quantities. | ||||||
| Production flow | Heading→washer assembly→Threading→Secondary machine→heat treatment→plating→Anti-slipping→Baking→QA Inspection&sorting→Packing→Shipping. | ||||||
3. Application
Stainless steel carriage bolts are generally used for marble installation of dry pendants. When tightened, the bolt rods do not rotate due to the function of the square neck, which is easy to be fixed and installed. It is mainly used in some places where screw
Carriage screws are round head square neck screws (see figure). Because the shape is a bit like the ancient carriage of the shaft and wheel parts named. There are a variety of standards. With a square neck, it is generally used in connection parts that require protection against bolt rotation. Sometimes it can also be used as a shaft for folding chairs
4. Advantages
1. Good service. Any existing small problem will be solved at the most prompt time;
2. Rich export experience;
3. Data sheet is available upon your request
4. Welcome to send enquiry, we will reply ASAP.
5. Prompt shipment with all documents
6. Custom packing, with photo before shipment
7. High quality and competitive price.
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