A robust M8 x 51mm hex head cap screw, forged from durable carbon steel. Featuring a 12mm head width, this fastener offers superior tensile strength and reliability for demanding industrial assemblies.
| Standard | ASTM A106 |
| Material | Carbon Steel |
| Finish | Black Oxide |
| Grade | N/A |
| Size | M8 |
| Length | 51mm |
| Head Width | 12mm |
Specified by design engineers worldwide, this M8 x 51mm carbon steel hex head cap screw provides exceptional load-bearing capacity. The material's high tensile strength and yield point ensure structural integrity under significant stress. Its metric coarse thread (M8) is engineered for precise engagement, while the 12mm hex head width allows for optimal torque application using standard tooling. This component is ideal for applications requiring secure, permanent fastening in machinery, construction, and automotive sectors where material resilience is paramount.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Ensure mating threads are clean and free from debris. 2. Hand-tighten the screw to engage threads fully. 3. Utilize an appropriately sized wrench or socket to tighten to the specified torque value.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | ASTM A106 |
| Tensile Strength | Standard Commercial Spec |
| Yield Strength | Standard Commercial Spec |
| Hardness | Varies by specific batch |
| Carbon (C) | 0.28 - 0.55% |
| Manganese (Mn) | 0.60 - 0.90% |
| Phosphorus (P) | 0.04% max |
| Sulfur (S) | 0.05% max |
| Bolt Size | Dry Torque (ft-lbs) | Lubricated Torque (ft-lbs) |
|---|---|---|
| M8 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M8 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Moderate |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-tightening the screw, leading to thread stripping or material fatigue. | Adhere to the manufacturer's recommended torque specifications or consult engineering drawings for precise tightening requirements. |
| Using the incorrect size wrench, causing head damage and improper torque application. | Select a wrench or socket that precisely fits the 12mm hex head to ensure secure engagement and prevent slippage. |
A: This Hex Head Cap Screw, Carbon Steel is manufactured from Carbon Steel.
A: Machine assembly and repair, Structural framework construction, Automotive component integration.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||