Low Head Socket Cap Screw DIN 7984 Alloy Steel and Stainless Steel Fastener for Limited Space Machinery and Mold Assembly

The DIN 7984 Low Head Socket Cap Screw is designed for fastening positions where the available space above the screw head is restricted. Its low cylindrical head and internal hex drive provide a fastening option for compact machinery, mold assemblies, and space-restricted equipment.

The DIN 7984:2022 designation identifies this product as a low-head screw with reduced loadability. Selection should consider both installation clearance and the mechanical requirements of the connection, rather than thread diameter and length alone.

For procurement, provide the required dimensions, material, quantity, and any drawing or assembly requirements. This helps distinguish the low-head design from standard-height socket head cap screws.

Product Specifications

The dimensions below are reference values, not a stock or supply-range guarantee. Confirm the required diameter and length combination, material grade, and finish during quotation.

DIN 7984 Reference Dimensions

All dimensions are in millimeters.

Dimension symbols: d = nominal thread diameter; P = thread pitch; dk = head diameter; k = head height; s = internal hex socket size across flats; t = socket depth.

Sizes in parentheses are non-preferred sizes in the reference page. The table is not a complete manufacturing or inspection specification. Detailed tolerances, thread length, and other requirements should follow the applicable standard and approved order drawing.

Screw Length Selection

The reference page lists nominal lengths of 5, 6, 8, 10, 12, (14), 16, (18), 20, 25, 30, 35, 40, 45, 50, (55), 60, 70, 80, 90, and 100 mm in its length selector.

This list is provided for reference only. It does not mean that every diameter and length combination is available, or that 100 mm is the standard maximum length.

Specify the required under-head length together with the thread diameter. For example, M6 × 20 identifies an M6 thread and a nominal under-head length of 20 mm. Screw length l and thread length b are different dimensions and should not be used interchangeably.

Low Head Design for Restricted Clearance

Head clearance is an important selection point when a screw is installed near an adjacent component or inside a compact assembly. Include the permitted head height and any head-diameter restriction when sending an inquiry.

The internal hex drive also requires suitable tool access. An assembly drawing can show whether nearby components may obstruct installation or maintenance.

Because DIN 7984 screws have reduced loadability, they should not be treated as direct replacements for standard-height DIN 912 screws solely because the diameter, length, or material is the same. The assembly designer should confirm suitability for the connection.

Material and Strength Reference

Material options are alloy steel and stainless steel. Specify the required material grade and mechanical requirements with your inquiry.

The DIN 7984:2022 reference page lists:

These are standard references, not confirmation that every class is supplied. The low-head design has reduced loadability, and the reference page distinguishes markings such as 08.8, 010.9, A2-070, and A4-070. Confirm the required class, marking, and connection requirements during quotation.

Applications

Machinery assemblies with limited clearance above the screw head

Mold assemblies requiring a low cylindrical head screw

Compact equipment with restricted fastening space

Select the screw according to the assembly drawing, available clearance, and required connection performance.

Information Needed for a Quote

Product standard: DIN 7984

Required thread diameter and under-head length

Material and grade requirements

Required quantity for each specification

Head-clearance restrictions or assembly drawing

Surface-finish requirements, if specified

Carton or bag packing preference

FAQ

1.What is the standard for this product?

The dimensional reference is DIN 7984:2022 for low-head hexagon socket cap screws with reduced loadability.

2.What materials are listed for this product?

Alloy steel and stainless steel. Specify the required material grade and mechanical requirements when requesting a quotation.

3.What thread sizes are shown in the reference table?

The table covers M3–M24 metric coarse threads. M14, M18, and M22 are shown as non-preferred sizes.

4.How is the screw length measured?

Screw length is measured from beneath the head to the screw tip. Provide this length together with the thread diameter.

5.Can DIN 7984 replace a DIN 912 screw of the same size?

Not automatically. DIN 7984 has a low-head design with reduced loadability. The connection requirements and installation conditions must be checked before substitution.

6.What packaging is listed?

Carton or bag packing. State your preference when sending the order requirements.

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Looking forDIN 7984 Low Head Socket Cap Screwsfor machinery, molds, or a space-restricted assembly?

Send your required diameter, length, material, and quantity.Include a drawing or head-clearance requirement so the quotation can be checked against your installation needs.