What Is a Lock Washer?

The part of the finger pad between the connected part and the nut. Generally a flat metal ring is used to protect the surface of the connected member from being scratched by the nut, and to distribute the pressure of the nut on the connected member.

Washers are divided into: flat washers-C, large washers-A and C, extra large washers-C, small washers-A, flat washers-A, flat washers-chamfered-A, high for steel structures Strength washers, spherical washers, tapered washers, square bevel washers for I steel, square bevel washers for channel steel, standard spring washers, light spring washers, heavy spring washers, internal tooth lock washers, internal serrated lock washers, External tooth lock washers, external serrated lock washers, single-ear lock washers, double-ear lock washers, outer tongue lock washers, and lock washers for round nuts.

Flat washers are generally used in connection parts. One is soft and the other is hard and brittle. Its main function is to increase

1 GB / T3103.3-2000 Fastener Tolerance Flat Washer

2 GB / T5286-2001 General plan of flat washers for bolts, screws and nuts

3 GB / T9074.1-2002 Bolt or screw and flat washer assembly

4 GB / T9074.18-2002 Self-tapping screws and flat washers assembly

5 GB / T 95-2002 level C flat washer

6 GB / T96.1-2002 large washer Class A

7 GB / T96.2-2002 Large Washer Class C

8 GB / T97.1-2002 level A flat washer

9 GB / T97.2-2002 flat washer chamfered type A

10 GB / T97.4-2002 flat washers for screw and washer assemblies

11 GB / T97.5-2002 flat washers for self-tapping screws and washer assemblies

12 GB / T848-2002 small washer class A

13 GB / T5287-2002 extra large washer C

14 GB / T4678.13-2003 Die-casting mold parts Part 13: Push plate washer

15 GB / T4605-2003 Rolling bearing thrust needle roller and cage assembly and thrust washer

16 GB / T97.3-2000 flat washer for pin

17 GB / T18230.5-2000 Flat washers for bolted structures are quenched and tempered

18 GB / T9074.5-2004 Cross recessed small pan head screws and flat washers assembly

19 GB / T9074.20-2004 Cross recessed hexagon head tapping screw and flat washer assembly

20 GB / T3762-1983 Angled gaskets for ferrule fittings

21 GB / T1231-2006 Technical conditions for high-strength large hexagon head bolts, large hexagon nuts and washers for steel structures

22 GB / T1230-2006 high strength washer for steel structure

23 GB / T2861.10-2008 Die guides Part 10: Washers

24 GB / T5649-2008 lock nuts and washers for pipe joints

25 GB / T94.3-2008 Technical specifications of elastic washers Saddle-shaped, wave-shaped elastic washers

26 GB / T3099.1-2008 Fastener terminology for threaded fasteners, pins and washers

27 GB / T10447-2008 Plain bearing semicircle thrust washer elements and tolerances

28 GB / T94.1-2008 Technical conditions of spring washer Spring washer

29 GB / T10446-2008 plain bearing thrust washers dimensions and tolerances

30 GB / T93-1987 standard spring washer

31 GB / T94.2-1987 Technical conditions of elastic washers Toothed, serrated lock washers

32 GB / T98-1988 technical specifications of stop washer

33 GB / T849-1988 spherical washer

34 GB / T850-1988 cone washer

35 GB / T851-1988 split washers

36 GB / T852-1988 square beveled washer for I-beam

37 GB / T853-1988 square inclined washer for channel steel

38 GB / T854-1988 single ear stop washer

39 GB / T7244-1987 heavy spring washer

40 GB / T855-1988 Double ear stop washers

41 GB / T7245-1987 Saddle spring washer

42 GB / T7246-1987 wave spring washer

43 GB / T856-1988 outer tongue stop washer

44 GB / T858-1988 Stop washers for round nuts

45 GB / T859-1987 light spring washer

46 GB / T860-1987 Saddle elastic washer

47 GB / T861.1-1987 internal tooth lock washer

48 GB / T861.2-1987 internal serrated lock washers

49 GB / T862.1-1987 external tooth lock washer

50 GB / T862.2-1987 external serrated lock washers

51 GB / T955-1987 Wave elastic washer

52 GB / T27938-2011 Sliding bearing thrust washer failure damage terms, appearance characteristics and reasons

53 GB / T956.1-1987 conical lock washer

54 GB / T956.2-1987 conical serrated lock washers

55 GB / T28697-2012 Rolling bearings Self-aligning thrust ball bearings and self-aligning seat washer dimensions

56 GB / T9074.2-1988 Cross recessed pan head screws and external serrated lock washer assemblies

57 GB / T9074.3-1988 cross recessed pan head screw and spring washer assembly

58 GB / T9074.4-1988 Cross recessed pan head screws, spring washers and flat washers assembly

59 GB / T9074.7-1988 Cross recessed small pan head screw and spring washer assembly

60 GB / T9074.8-1988 Cross recessed small pan head screws and spring washers and flat washers assembly

61 GB / T9074.9-1988 Cross recessed countersunk head screws and tapered lock washer assemblies

62 GB / T9074.10-1988 cross recessed countersunk head screws and tapered lock washer assemblies

63 GB / T9074.11-1988 Cross recessed hexagon head bolt and flat washer assembly

64 GB / T9074.12-1988 Cross recessed hexagon socket head bolt and spring washer assembly

65 GB / T9074.13-1988 Cross recessed hexagon socket head bolt, spring washer and flat washer assembly

66 GB / T9074.15-1988 Hex head bolt and spring washer assembly

67 GB / T9074.16-1988 Hex head bolt and outer serrated lock washer assembly

68 GB / T9074.17-1988 hexagon head bolt, spring washer and flat washer assembly

69 GB / T9074.26-1988 Spring washer for assembly

70 GB / T9074.27-1988 external serrated lock washers for assemblies

71 GB / T9074.28-1988 Conical lock washer for assembly

72 GB / T1030-1988 inner spherical washer ^[1]

GB97.1.CATPart GB97.1.SLDPRT

Nominal size d d1 d2 h 1000 weight (kg)

Nominal diameter (NND) Inner diameter (SD1) Outer diameter (SD2) Thickness (SD)

5 5.3 10 1 0.443

6 6.4 12 1.6 1.051

1. Grade C washers have no Ra3.2 and deburring requirements.

The materials of rubber gaskets are usually NBR (nitrile rubber), SBR (styrene-butadiene rubber), HNBR (hydrogenated nitrile rubber), EPDM (Ethylene-propylene-diene rubber), SILICONE (silicone), VITON (fluorine rubber), CR (

The rubber ring and metal ring are integrally bonded and vulcanized. It is a sealing ring used to seal threads and flange connections.

Combination washers (6 photos)

The ring consists of a metal ring and a rubber gasket. Anti-rust treatment of metal rings, rubber rings generally use oil resistant nitrile rubber or fluorine rubber. The combination pads are available in metric and inch sizes. There are standard JB982-77 regulations for the combination of metal pads and rubber in combination pads. Combination gaskets are used for threaded pipe joints and screw plugs. It is generally used with ferrule pipe joints to block oil ports. It is mainly used for static sealing of end faces of threaded joints of hydraulic valve pipe joints. It is applicable to British and American standards. The static sealing of the end face of the joints of British threads and French and German standard metric threads. The combined sealing gasket can be divided into A type and B type according to the structural form; it can be divided into all-inclusive and half-inclusive according to the difference of the rubber.