Engineered from high-strength Aluminum 6061, this M21 x 44mm hex head cap screw offers superior corrosion resistance and a lightweight profile. Its robust design ensures reliable fastening in demanding environments.
| Standard | ASTM A106 |
| Material | Aluminum 6061 |
| Finish | Galvanized |
| Grade | N/A |
| Size | M21 |
| Length | 44mm |
| Head Width | 25mm |
Trusted by engineers across multiple sectors, this M21 x 44mm Hex Head Cap Screw is manufactured from Aluminum 6061, a precipitation-hardening alloy renowned for its excellent strength-to-weight ratio and good corrosion resistance. With a nominal thread diameter of M21, a grip length of 44mm, and a precisely machined 25mm hex head width for secure torque application, it is ideal for structural assemblies where weight reduction and environmental durability are critical. Typical applications leverage its non-magnetic properties and good formability.
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 of debris. 2. Hand-thread the screw initially to verify proper alignment and engagement. 3. Tighten to specified torque values using an appropriate calibrated torque wrench, avoiding over-tightening.
| 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 |
| Bolt Size | Dry Torque (ft-lbs) | Lubricated Torque (ft-lbs) |
|---|---|---|
| M21 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M21 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Not Recommended |
| Chemical / Acidic | Not Recommended |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Using excessive torque, leading to thread stripping or material fatigue. | Consult material specifications or engineering drawings for correct torque limits and use a calibrated torque wrench. |
| Improper thread engagement, causing cross-threading and compromised joint integrity. | Initiate tightening by hand to confirm smooth thread engagement before applying torque. |
A: This Hex Head Cap Screw, Aluminum 6061 is manufactured from Aluminum 6061.
A: Aerospace structural components, Automotive chassis and body assembly, Marine hardware and fittings, High-performance sporting equipment.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||