Kova Fasteners products are manufactured strictly adhering to international dimension matrices including German Institute for Standardization (DIN), International Organization for Standardization (ISO), and European Norms (EN). Click on any category below to filter our standards library.
We provide full technical schematics and precision measurement standards for every engineering fastener we manufacture. Review thread pitch, shank lengths, head profiles, and tolerances directly on individual specification pages.
High-tensile hex bolts, carriage bolts, structural caps, and fine-thread variants.
Standard hex nuts, heavy-duty jam locks, nylon lock nuts, and domed caps.
Flat load spreaders, helical spring locks, threaded rods, and headless studs.
Heavy structural bolting assemblies (HV/HR systems) for preload steel engineering.
| Standard | Drawing | Category | Technical Dimensions & Application Parameters |
|---|---|---|---|
| DIN 931 |  |
Hexagon Bolt | Hexagon head bolt with partial thread (shank). Used for heavy machinery assemblies. |
| DIN 933 |  |
Hexagon Bolt | Hexagon head bolt with full thread. Ideal for tight structural enclosures requiring maximum thread grip. |
| DIN 603 |  |
Carriage Bolt | Mushroom head bolt with square neck. Prevents turning from outside when tightening. Used in timber frames. |
| DIN 604 |  |
Countersunk Bolt | Flat countersunk nib bolt. Designed to flush evenly with surfaces in material processing tracks. |
| DIN 605 |  |
Countersunk Bolt | Countersunk square neck bolt. Secure flat-flush mounting in timber machinery. |
| DIN 608 |  |
Plough Bolt | Countersunk low square neck bolt. Heavy duty construction for agricultural machinery blades. |
| DIN 6914 |  |
Structural Bolt | High-strength large hex bolts for preloaded structural steel joints (Grade 10.9 standard). |
| DIN 6921 |  |
Flange Bolt | Hexagon flange bolts with/without serrations. Distributes pressure on heavy automotive load blocks. |
| DIN 7990 |  |
Steel Structure Bolt | Hexagon bolts intended specifically for steel structural assemblies and framework grids. |
| DIN 960 |  |
Fine Thread Bolt | Hexagon head bolt with metric fine thread, partially threaded. Offers high vibrational resistance. |
| DIN 961 |  |
Fine Thread Bolt | Hexagon head bolt with metric fine thread, fully threaded. Used in precision automotive systems. |
| DIN 912 |  |
Socket Cap Screw | Hexagon socket head cap screws used in precision jigs, fixtures, and tight clearance machinery components. |
| Standard | Drawing | Category | Technical Dimensions & Application Parameters |
|---|---|---|---|
| DIN 934 |  |
Hexagon Nut | Standard metric coarse pitch hex nut. Universally applied across general engineering. |
| DIN 439 |  |
Jam Nut | Thin hexagon nuts (low profile). Used for locking other nuts or in low-clearance constraints. |
| DIN 985 |  |
Lock Nut | Prevailing torque type hexagon nuts with a non-metallic insert (Nylon lock nut) to prevent loosening. |
| DIN 1587 |  |
Cap Nut | Domed cap nuts protecting threaded bolt ends from exposure and offering a finished aesthetic. |
| DIN 6923 |  |
Flange Nut | Hexagon nuts with an integrated flange acting as a built-in washer. Eliminates the need for separate washers. |
| Standard | Drawing | Category | Technical Dimensions & Application Parameters |
|---|---|---|---|
| DIN 125 |  |
Flat Washer | Standard flat washer without chamfer, grade A. Used to spread load across bolted surfaces. |
| DIN 126 |  |
Flat Washer | Standard flat washer without chamfer, grade A. Used to spread load across bolted surfaces. |
| DIN 127 |  |
Spring Washer | Helical spring lock washers. Prevents loosening caused by vibration. |
| DIN 7980 |  |
Spring Washer | Spring lock washers specifically designed for socket head cap screws. |
| DIN 975 |  |
Threaded Rod | Continuous threaded rods (1 meter to 3 meters). Used extensively in construction and hanging installations. |
| DIN 976 |  |
Stud Bolt | Stud bolts with constant thread length for high-pressure piping and flange connections. |
