Tab Washers With Long Tab And Wings

The Tab Washers with Long Tab and Wings produced by the Xiaoguo® factory have extremely high reliability in terms of anti-loosening function. Even under continuous vibration and impact conditions, they can maintain a good locking state.

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Product Description

The working principle of Tab Washers with Long Tab and Wings are based on pure mechanical locking, rather than friction or elasticity.The core mechanism is to bend the two ear pieces, thereby physically preventing the nut (or bolt head) from rotating relative to the workpiece.

【1】Specific work process

（1）Normal installation, with ear tabs reserved

Place the Tab Washers with Long Tab and Wings on the bolt, then tighten the nut. At this point, both ear tabs remain straight and have not been bent.

（2）Bend the short ears and lock the nuts

Use pliers to bend the short ears upwards, making them tightly adhere to one side of the nut. The short ears should rest against the plane of the nut to prevent it from rotating.

（3）Bend the long ears and fix the Tab Washers with Long Tab and Wings

Bend the long ears downward or to the side, so that they can grip the edge of the workpiece, insert into the slot holes on the workpiece or rest against the fixed protrusion.

Tab Washers With Long Tab And Wings

【2】Final effect determination

Long ear fixed the washer onto the workpiece, ensuring that the washer could not rotate.

The short ears lock the nut and the washer together, and the nut cannot rotate either.

Since no relative motion can occur between the washer and the nut, the bolt connection is completely locked.

【3】The difference from friction-based anti-loosening mechanisms

Friction lock: It prevents rotation by creating resistance. Vibration may overcome this resistance and cause loosening.

Tab Washers with Long Tab and Wings: By means of direct physical interference, as long as the ear piece is not bent or damaged, the nut will absolutely not rotate. This locking mechanism is not affected by vibration, lubrication, or temperature changes.

Tab Washers With Long Tab And Wings

Mon	φ3	φ 4	φ5	φ6	φ8	φ10	φ12	φ14	φ16	φ18	φ20
d max	3.5	4.5	5.6	6.76	8.76	10.93	13.43	15.43	17.43	19.52	21.52
d min	3.2	4.2	5.3	6.4	8.4	10.5	13	15	17	19	21
dc max	10	14	17	19	22	26	32	32	40	45	45
dc min	9.64	13.57	16.57	18.48	21.48	25.48	31.38	31.38	39.38	44.38	44.38
L min	11.65	13.65	15.65	17.65	19.58	21.58	27.58	27.58	31.5	35.5	35.5
L max	12.35	14.35	16.35	18.35	20.42	22.42	28.42	28.42	32.5	36.5	36.5
h	0.4	0.4	0.5	0.5	0.5	0.5	1	1	1	1	1
b1	7	9	11	12	16	19	21	25	32	38	38
r	2.5	2.5	2.5	4	4	6	10	10	10	10	10