ASME B 18.21.1 lnternal Tooth-Lock Washers

Category:Lock washer
Number of views:order
Release date:2025-05-12 13:32:09

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Product Name: ASME B 18.21.1 lnternal Tooth-Lock Washers

Implementation standard: ASME/ANSI B 18.21.1 (Table 6)

Product Overview:ASME B 18.21.1 lnternal Tooth-Lock Washers are also called multi-tooth anti-loosening washers, internal tooth anti-slip washers, chrysanthemum washers, thrust washers. There are internal tooth lock washers and external tooth lock washers in the American standard. lock, prevent slipping and loosen. The elastic teeth of the washers after heat treatment increase the friction and preload of the nuts or bolts to achieve the effect of loosening. There are corresponding standards for internal teeth in many countries, such as: national standard GB 861.1 internal tooth lock washers, German standard DIN 6797 J-type chrysanthemum anti-loosening washers, IFI 532T2 American standard medium-meter heavy-duty internal tooth anti-slip pads, Japanese standard JIS B 1251 internal multi-tooth loosening washers, etc.

Product materials: 304, 316, 316L, 65Mn, 304-CSP, spring steel, etc.

Product surface: blackening, blue-white zinc, colored zinc, black zinc, zinc-nickel alloy, hot-dip galvanizing, hot-dip galvanizing, geomet, Dacromet, electrophoresis, Teflon, baking varnish, road rust treasure, rust titanium and other customer-specified surface treatments

Product diameter: φ2#, φ3#, φ4#, φ5#, φ6#, φ8#, φ10#, φ12#, φ1/4, φ5/16, φ3/8, φ7/16, φ1/2, φ9/16, φ5/8, φ3/4, φ7/8, φ1", φ1-1/8, φ1-1/4, φ1-1/2 and other non-standard sizes can be customized

Product size

Size unit:inch

Size

10#

12#

1/4

5/16

3/8

d	Max
	Min
d_c	Max
	Min
t	Max
	Min

0.095	0.109	0.123	0.136	0.15	0.176	0.204	0.231	0.267	0.332	0.398
0.089	0.102	0.115	0.129	0.141	0.168	0.195	0.221	0.256	0.32	0.384
0.2	0.232	0.27	0.28	0.295	0.34	0.381	0.41	0.478	0.61	0.692
0.175	0.215	0.245	0.255	0.275	0.325	0.365	0.394	0.46	0.594	0.67
0.016	0.016	0.018	0.02	0.022	0.023	0.024	0.027	0.028	0.034	0.04
0.01	0.01	0.012	0.014	0.016	0.018	0.018	0.02	0.023	0.028	0.032

Size

7/16

1/2

9/16

5/8

11/16

3/4

13/16

7/8

1-1/8

1-1/4

d	Max
	Min
d_c	Max
	Min
t	Max
	Min

0.464	0.53	0.596	0.663	0.728	0.795	0.861	0.927	1.06	1.192	1.325
0.448	0.512	0.576	0.64	0.704	0.769	0.832	0.894	1.019	1.144	1.275
0.789	0.9	0.985	1.071	1.166	1.245	1.315	1.41	1.637	1.83	1.975
0.74	0.867	0.957	1.045	1.13	1.22	1.29	1.364	1.59	1.799	1.921
0.04	0.045	0.045	0.05	0.05	0.055	0.055	0.06	0.067	0.067	0.067
0.032	0.037	0.037	0.042	0.042	0.047	0.047	0.052	0.059	0.059	0.059