Efficient Face Projection Welding Bolt

The integrity of the joint formed by a Efficient Face projection welding bolt is verified through standard destructive or non-destructive testing methods. For over 15 years, Xiaoguo® has built a reputation among manufacturers for reliable quality and competitive pricing.

Model:Q 199B-1999

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Product Description

To help Efficient Face projection welding bolts resist rust, they often get surface coatings. Zinc plating—clear or yellow chromate—is real common and works pretty well. Phosphate coatings help paint stick better and also offer some rust protection. Whatever coating is put on these bolts, it needs to work with the welding process.

Mon	M4	M5	M6	M8	M10	M12
P	0.7	0.8	1	1.25	1.5	1.75
dk max	11.5	12.5	14.5	19	21	24
dk min	11.23	11.23	14.23	18.67	20.67	23.67
k max	2	2.5	2.5	3.5	4	5
k min	1.75	2.25	2.25	3.25	3.75	4.75
r min	0.2	0.2	0.3	0.3	0.4	0.4
d1 max	8.75	9.75	10.75	14.25	16.25	18.75
d1 min	8.5	9.5	10.5	14	16	18.5
h max	1.25	1.25	1.25	1.45	1.45	1.65
h min	0.9	0.9	0.9	1.1	1.1	1.3
d0 max	2.6	2.6	2.6	3.1	3.1	3.1
d0 min	2.4	2.4	2.4	2.9	2.9	3.4

Product Benefits

The surface treatment on a Efficient Face projection welding bolt really affects how well the weld turns out. If the coating is thick or doesn’t conduct electricity, it can mess with the flow of electrical current and how much heat gets made.

Coatings need to be thin, conduct electricity, or be made specifically for welding. Usually, the projections on these bolts will push through the coating when welding, making sure the metals touch directly.

This design prevents the coating from obstructing current conduction, ensuring a smooth welding circuit. The thin coating also reduces resistance to protrusion penetration, maintaining protective properties while allowing the metal contact surfaces to fit tightly, improving weld strength and conductivity.

Applicable Scenarios

Efficient Face projection welding bolts work really well in high-volume assembly lines, especially in car making—for things like brackets, panels, and electrical grounds—and in appliances, like chassis and housings.

They’re good when you can only reach one side, when welding speed matters a lot, or when spot welding nuts or studs just won’t work. They give a strong, threaded spot to attach things.

Efficient Face Projection Welding Bolt