This M19 x 21mm hex head cap screw, forged from premium 316 stainless steel, offers superior corrosion resistance and high tensile strength. Engineered for critical fastening in harsh environments.
| Standard | DIN 933 |
| Material | 316 Stainless Steel |
| Finish | Anodized |
| Grade | N/A |
| Size | M19 |
| Length | 21mm |
| Head Width | 34mm |
Built to exacting engineering tolerances, this M19 x 21mm hex head cap screw features a nominal diameter of M19 and a length of 21mm. The head width measures 34mm, providing ample torque transmission. Constructed from 316 stainless steel, it boasts excellent resistance to a broad spectrum of corrosive media, including chlorides and acids, making it ideal for marine, chemical processing, and food/beverage industries. Its robust design ensures reliable performance under significant mechanical stress and extreme temperature variations.
This component strictly adheres to the tolerances, material specifications, and quality benchmarks set by the world's leading industrial manufacturers.
1. Select the appropriate torque wrench calibrated to the fastener's specified torque value. 2. Ensure the mating threads are clean and free from debris, lubricants, or thread-locking compounds unless specified. 3. Apply steady, controlled torque to the hex head until the target torque value is achieved, avoiding over-tightening.
| Standard System | Designation |
|---|---|
| ISO Equivalent | ISO 898-1 / ISO 4014 |
| DIN Equivalent | DIN 931 / DIN 933 |
| Primary Standard | DIN 933 |
| Tensile Strength | 75,000 psi (515 MPa) |
| Yield Strength | 30,000 psi (205 MPa) |
| Elongation in 2 in. | 40% min |
| Hardness | Rockwell B95 max |
| Carbon (C) | 0.08% max |
| Chromium (Cr) | 16.0 - 18.0% |
| Nickel (Ni) | 10.0 - 14.0% |
| Molybdenum (Mo) | 2.0 - 3.0% |
| Bolt Size | Dry Torque (ft-lbs) | Lubricated Torque (ft-lbs) |
|---|---|---|
| M19 | Check Calculator | Reduce by 25% |
| Size / Type | Est. Weight (lbs/100) | Shipping Weight (kg) |
|---|---|---|
| M19 | Varies by dimension | Contact Sales |
| Environment | Rating |
|---|---|
| Indoor / Dry | Excellent |
| Outdoor / Exposed | Excellent |
| Marine / Saltwater | Excellent |
| Chemical / Acidic | Good |
| ❌ Mistake | ✅ Correct Approach |
|---|---|
| Over-tightening the fastener, leading to thread stripping or bolt fracture. | Utilize a calibrated torque wrench and adhere to recommended torque specifications for the specific application and mating material. |
| Using a fastener with inadequate corrosion resistance for the environment. | Verify the material grade (316 stainless steel in this case) is suitable for the intended operating conditions, particularly in corrosive or marine environments. |
A: This Hex Head Cap Screw, 316 Stainless Steel is manufactured from 316 Stainless Steel.
A: Marine hardware and fittings, Chemical processing equipment, Food and beverage machinery, Offshore oil and gas components, Wastewater treatment facilities.
Conversion factor: 1 ft-lb ≈ 1.356 Nm
| Status | Mating Component | Standard | Torque Spec | Engineering Notes |
|---|---|---|---|---|
| No verified compatibility data found for this component. | ||||