Flanged Weld Hex Nut

China supplier Xiaoguo® Flanged weld hex nut, with serrated flange surface, increases contact area, enables welding bonding of the workpiece, and has a much better anti-loosening performance in vibrating working environments compared to ordinary nuts and washers. Discounts are available for bulk orders.

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Product Description

Common surface treatments

The following are the common surface treatment schemes and their characteristics for Flanged weld hex nut, which can help you make a choice based on the application scenario.

（1）Electro-galvanizing

Color: Blue and white / Yellow / Black

Salt spray test: 48 - 120

Cost: Low

Welding impact: Zinc layer volatilizes during welding, generating smoke. Adequate ventilation is required; Local zinc removal can improve the situation.

Recommended application: Indoor sheet metal, household appliances, general industry.

（2）Hot-dip galvanizing

Color:Silver-gray thick coating

Salt spray test: 500+

Cost: Medium

Welding impact: The coating is quite thick. Before welding, the welding area needs to be polished; otherwise, there will be a lot of spatter.

Recommended application:Outdoor cabinets, building steel structures, power facilities

Flanged Weld Hex Nut

（3）Dacromet/Zinc-Aluminum Coating

Color:Matte Silver Gray

Salt spray test: 1000+

Cost: Medium

Welding impact: No hydrogen embrittlement, minimal coating influence during welding, can be directly welded (less smoke)

Recommended application:Automobile chassis, high anti-corrosion requirements, high strength grade

（4）Zinc-nickel alloy

Color:Silver-gray/black

Salt spray test: 500 - 1000

Cost: High

Welding impact: The coating is dense and has better welding performance than ordinary galvanization.

Recommended application: It is recommended that the Flanged weld hex nut be used in applications with high demand, such as the engine compartment of automobiles and environments with high humidity.

（5）Turn black

Color:black

Salt spray test: 12 - 24

Cost: Extremely low

Welding impact:Almost no preservative effect, no impact on welding

Recommended application:Extremely dry indoor environment, temporary rust prevention

（6）Stainless steel in its natural color

Color:Metal in its original color

Salt spray test:Superior (it is the material that determines)

Cost:High

Welding impact:Excellent welding performance, no need for additional coating

Recommended application:Marine, chemical, food, medical fields

Flanged Weld Hex Nut

Thread Sized			M5	M6	M8	M10	M12	M14	M16
d			M5	M6	M8	M10	M12	M14	M16
P	Coarse Thread Pitch		0.8	1	1.25	1.5	1.75	2	2
P	Fine Thread Pitch		/	/	/	/	15	1.5	1.5
C	Nominal Size	±0.1	0.8	0.8	1	1.2	1.2	1.2	1.2
dc	max		15.5	18.5	22.5	26.5	30.5	33.5	36.5
dc	min		14.5	17.5	21.5	25.5	29.5	32.5	35.5
e	min		8.2	10.6	13.6	16.9	19.4	22.4	25
e	max		8.5	10.9	14	17.5	20	23	26
f	Nominal Size	±0.25	1.7	2	2.5	3	3	4	4
g	Nominal Size	±0.1	4	5	6	7	8	8	8
m	min		4.7	6.64	9.64	12.57	14.57	16.16	18.66
m	max		5	7	10	13	15	17	19.5
S	max		8	10	13	16	18	21	24
S	min		7.64	9.64	12.57	15.57	17.57	20.48	23.48
b	max=nominal size		2.2	2.7	2.7	2.95	3.2	3.45	3.7
b	min		2	2.5	2.5	2.75	3	3.25	3.5
per 1000 unitsskg			/	5.7	12.2	21.8	29.4	45.8	/

Suggestions for Surface Treatment Selection

When choosing the surface treatment for Flanged weld hex nut, it is necessary to comprehensively consider four key factors: the usage environment, strength grade, welding process, and cost budget.

（1）Clearly specify the usage environment

Indoor wiring is galvanized, outdoor wiring is hot-dip galvanized or dactron-coated, and for highly corrosive environments, stainless steel is used.

（2）Confirm the strength grade of the Flanged weld hex nut

10.9 grade and above: Disable electro-galvanizing. Only Dacromet or stainless steel can be selected.

（3）Evaluate the compatibility of welding processes

Hot-dip galvanizing must be ground; Dacromet, zinc-nickel alloy can be welded directly.

（4）Balance the cost budget

On the premise of meeting the first three conditions, choose the most economical option.