SS304 Round Head Carriage Bolt
Product Description
SS304 Round Head Carriage Bolt
The square shoulder of a carriage bolt stops it from spinning as it is screwed into the surface of a material. Once you seat the bolt through the hole, it is the job of the nut and washer to pull the bolt into the material tightly
Carriage Bolts are often used for connecting wood to wood, wood to metal and metal to metal。
At the Goshen hardware, we provide you with several high quality Carriage Bolts that are made from premium quality materials and different grades of stainless steel to ensure that these will last for long time.
| Stainless Steel 18-8 Carriage Bolt | |
|---|---|
Stainless Steel 18-8 | |
| Description | Round head bolt with a square neck under the head, unified thread pitch, made from austenitic alloy stainless steel. |
| Applications | Use in environments which require general atmospheric corrosion resistance. |
| Material | Made from any of the following: 302, HQ, 303, 303Se, 304, XM7 (Chromium Content 17-19% and Nickel Content 8-10%) |
| Heat Treatment | The austenitic alloys develop their strength through work hardening during the fastener manufacturing process. The only heat treatment normally available on austenitic stainless alloys is annealing, which is done at approx. 1900 Degrees (F) to a dead soft condition and is not normally thermally reversible. |
| Hardness | M5-M12 Diameter: Rockwell B95-C32 |
| Yield Strength | M5-M12, 2.25 Diameter and Longer: 65,000 psi min |
| Tensile Strength | M5-M12 Diameter, 2.25 Diameter and longer: 100,000-150,000 psi min |
| Elongation in 4D | M5-M12 Diameter: 20% min |
Specification
| Thread specification | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |
| d | ||||||||
| P | Screw pitch | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
| b | L≤125 | 16 | 18 | 22 | 26 | 30 | 38 | 46 |
| 125＜L≤200 | 22 | 24 | 28 | 32 | 36 | 44 | 52 | |
| L＞200 | / | / | 41 | 45 | 49 | 57 | 65 | |
| dk | Max | 13.55 | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 |
| Min | 12.45 | 15.45 | 19.35 | 23.35 | 29.35 | 37.2 | 45.2 | |
| ds | Max | 5 | 6 | 8 | 10 | 12 | 16 | 20 |
| Min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
| k1 | Max | 4.1 | 4.6 | 5.6 | 6.6 | 8.75 | 12.9 | 15.9 |
| Min | 2.9 | 3.4 | 4.4 | 5.4 | 7.25 | 11.1 | 14.1 | |
| k | Max | 3.3 | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
| Min | 2.7 | 3.12 | 4.12 | 4.62 | 6.05 | 8.05 | 9.95 | |
| r1 | ≈ | 10.7 | 12.6 | 16 | 19.2 | 24.1 | 29.3 | 33.9 |
| r2 | Max | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 1 | 1 |
| r3 | Max | 0.75 | 0.9 | 1.2 | 1.5 | 1.8 | 2.4 | 3 |
| s | Max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
| Min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
| Thousands of steel weight ≈kg | - | - | - | - | - | - | - | |
| Thread length b | - | - | - | - | - | - | - | |
Material
| 304 Chemical Composition(%) | ||||||||
| Grade | C≤ | Mn≤ | Si≤ | S≤ | P≤ | Cr | Ni | N≤ |
| 0.08 | 2 | 0.75 | 0.03 | 0.045 | 18.0-20.0 | 8.0-10.5 | 0.1 | |
| 304 Mechanical property | |||
| σb≥ | σ0.2≥ | δ5 (%)≥ | Hardness(HB)(kgf/mm2)] |
| 520(Mpa) | 205(Mpa) | 40% | ≤187 HRB≤90 HV ≤200 |