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Cross Recessed Hex Head Bolts Indentation

Manufacturer Xiaoguo® Cross Recessed Hex Head Bolts Indentation – hex head for high torque, cross recess for quick starts, and a center dent that stops head cracks. Used in auto, machinery, wood framing. Custom lengths/coatings? No problem. Bulk orders welcome – ask us.

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Product Description

Cross Recessed Hex Head Bolts Indentation from China Xiaoguo® combine both hexagonal head and cross-slot driving methods, and have an indentation in the center of the head. The hexagonal head can be tightened with a wrench, the cross slot facilitates quick positioning or operation in confined spaces; the central depression can disperse stress and prevent the head from cracking under high torque.

Packaging, labeling and customized accessories

Not only the Cross Recessed Hex Head Bolts Indentation themselves, but also the packaging and labels can be customized according to your requirements.

1.Customized packaging form

Usage scenario	Recommended packaging	Explanation
Automated vibration feeder	Bulk 15 kg or 25 kg plastic bags + cardboard boxes	No excessive oil on the surface
Workers manually pick up	Small bags of 1 kg / 2 kg / 5 kg	Hot-sealed, with specification labels attached
Multi-specification mixed-line production	Individual packaging (100 pieces per box) or blister trays	Each box is labeled with a color-coded label to prevent incorrect picking
Export by sea	Cartons + Pallets + VCI rust-proof paper + Desiccant	Vacuum packaging available
Maintenance market / Retail	Color box + instruction manual + barcode	Printed according to customer design

Cross Recessed Hex Head Bolts Indentation

2.Customization of labels and barcodes

Outer box label: Can be printed with material code, production batch number and QR code

Inner pocket label: Can print product specifications, quantity, and production date

Color-coded rings: Apply different colored paint dots on the head or hexagonal surface of the Cross Recessed Hex Head Bolts Indentation for quick identification of screws of the same specification but different lengths or materials.

3.Mixing material control customization

If multiple specifications need to be placed in the same outer box, we adopt the following approach:

Use separate inner boxes or individual small plastic bags to pack each specification.

Each specification is labeled with a different color.

4.Surface fuel quantity control

Some customers request that the surface of the Cross Recessed Hex Head Bolts Indentation be "oil-free" or "lightly oiled" to prevent contamination of electronic components or interference with the gluing process. We can:

Control the application amount of anti-rust oil

Switch to dry film anti-rust agent

The stainless steel material can undergo oil-free passivation, and it is completely non-stick to oil.

Cross Recessed Hex Head Bolts Indentation

Mon	ST2.9	ST3.5	ST4.2	ST4.8	ST6.3	ST8
P	1.1	1.3	1.4	1.6	1.8	2.1
a max	1.1	1.3	1.4	1.6	1.8	2.1
da max	3.5	4.1	4.9	5.5	7.1	9.2
s max	5	5.5	7	8	10	13
s min	4.82	5.32	6.78	7.78	9.78	12.73
e min	5.4	5.96	7.59	8.71	10.95	14.26
k max	2.3	2.6	3	3.8	4.7	6
k min	2	2.3	2.6	3.3	4.1	5.2
r min	0.1	0.1	0.2	0.2	0.25	0.4
No.	1	2	2	2	3	3
M	2.5	3.5	4	4.4	6.2	7.2
t min	0.95	0.91	1.4	1.8	2.36	3.2
t max	1.32	1.43	1.9	2.33	2.86	3.86
d max	2.9	3.53	4.22	4.8	6.25	8
d min	2.76	3.35	4.04	4.62	6.03	7.78
d1 max	2.18	2.64	3.1	3.58	4.88	6.2
d1 min	2.08	2.51	2.95	3.43	4.7	5.99

Industry application

The composite head design of the Cross Recessed Hex Head Bolts Indentation is suitable for quick pre-tightening and can withstand high torque locking. Therefore, it is widely used in the following industries.

1.Electronics and Electrical Appliance Industry

Usage: For fixing electrical appliance enclosures, control panels, junction boxes, and heat sinks.

Reason: On the assembly line, a cross-slot screwdriver is used first, and then a hexagonal socket is used for locking to prevent loosening due to transportation vibration. The recessed design avoids cracking of the head on the thin-walled plastic part.

2.Automobile and component manufacturing

Usage: For fixing door panels, instrument panels, assembly of car lights, and connection of plastic brackets.

Reason: It can be directly screwed into pre-drilled holes in plastic or metal without the need for nuts. The stainless steel material can be used for damp areas such as exterior lights.

3.Mechanical equipment and sheet metal processing

Usage: Control cabinet housing, motor cover, sheet metal box assembly, equipment maintenance cover plate.

Reason: The cross slot facilitates manual pre-positioning, and the hexagonal head can apply a large torque in a confined space using a socket. The surface is treated with galvanization or Dacromet coating, making it suitable for general industrial environments.