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Refined carbon steel stainless steel U-bolts

Refined hot-dip galvanized bolts

High strength precision machined T-bolts with superior performance

DIN933 304 A2-70 hexagonal bolt

DIN931 304 A2-70 hexagonal bolt

DIN 6921 Refined Flange Bolts for Enhanced Performance and Durability

DIN 913 914 915 916 Precision High Strength Tightening Bolt

DIN 912 refined hexagonal bolt cup head half round head flat head

DIN 603 refined carriage bolts

Refined round nut: Enhancing fastening solutions with precision and durability

0102

DIN 980 refined hexagonal locking nut

Grade: 4.8, 8.8, 10.9, 12.9, Material: Q235, 35K, 45K, 40Cr, 35Crmo, 42Crmo, Surface Treatment: Blackened, Electrogalvanized, Dacromet, Hot-dip Galvanized, Galvanized, etc!

It is to tighten two identical nuts onto the same bolt, and add a tightening torque between the two nuts to ensure reliable bolt connection.

Composed of two parts, each with staggered cams. Due to the internal wedge design slope angle being greater than the nut angle of the bolt, this combination tightly bites into a whole. When vibration occurs, the protruding parts of the anti loosening nut move against each other, generating lifting tension, thereby achieving a perfect anti loosening effect.

product details

Product introductionintroduction

There are threaded holes drilled through the outer surface of the nut to the inner threaded surface (usually 2, distributed 90 degrees on the outer surface), which are used to screw in small diameter countersunk screws. The purpose is to apply a centripetal force to the thread to prevent the locking nut from loosening. The high-quality locking nut sold in the market is embedded with a copper small piece on the inner circular surface of the nut that matches the thread of the locking nut, to avoid direct contact between the radial locking screw and the locked thread and damage to the latter. This type of locking nut is gradually being applied in shaft end locking situations of rotating motion parts, such as anti loosening of ball screw mounting end bearings.

A specialized locking nut needs to be used together with a locking gasket. The dedicated anti loosening nut is not a hexagonal nut, but a medium round nut with 3, 4, 6, or 8 notches on the circumference of the nut (depending on the size of the nut and the manufacturer's product series). These notches are not only the focus of tightening tools, but also the entry point of the anti loosening pad clamp.

Usageproducts

Lock nuts made of different metals can be applied to different temperature conditions; However, due to the deformation resistance of the metal material itself, the deformation of the all-metal nut is not easy to control, which will lead to a relatively large dispersion of the anti-loosening torque, which is easy to cause the assembly to be cized; In addition, after the assembly of this kind of lock nut, due to the effect of friction, it is easy to cause damage to the coating on the thread surface, which affects the anti-corrosion performance. Precautions: When assembling the all-metal lock nut, the speed of the assembled tool should not be too high; If it is a lock nut with galvanized, Dacromet and other surface treatments, it should be lubricated first when used; The all-metal lock nut can be reused, but should not be installed more than 5 times.

Thread size	M3	M4	M5	M6	M7	M8	M10	M12	M14	M16
Pitch	0.5	0.7	0.8	1	1	1.25	1.5	1.75	2	2
Fine teeth	-	-	-	-	-	1	1	1.5	1.5	1.5
Fine teeth	-	-	-	-	-	-	1.25	1.25	-	-
minimum	6.01	7.66	8.79	11.05	12.12	14.38	18.9	21.1	24.49	26.75
Maximum = Nominal value	3.7	4.2	5.1	6	7	8	10	12	14	16
minimum	3.4	3.9	4.8	5.7	6.5	7.5	9	11	12	14
Maximum = Nominal value	5.5	7	8	10	11	13	17	19	22	24
minimum	5.32	6.78	7.78	9.78	10.73	12.73	16.73	18.67	21.67	23.67

Thread size	M18	M20	M22	M24	M27	M30	M33	M36	M39
Pitch	2.5	2.5	2.5	3	3	3.5	3.5	4	4
Fine teeth	2	2	2	2	2	2	2	3	3
Fine teeth	1.5	1.5	1.5	-	-	-	-	-	-
minimum	29.56	32.95	35.03	39.55	45.2	50.85	55.37	60.79	66.44
Maximum = Nominal value	18	20	22	24	27	30	33	36	39
minimum	16	18	20	22	25	28	31	34	37
Maximum = Nominal value	27	30	32	36	41	46	50	55	60
minimum	26.16	29.16	31	35	40	45	49	53.8	58.8