A locknut with a nylon insert collar known as a ss nylock prevents or resists turning. The maker of ss nylock nuts also refers to their products as polymer-insert lock nuts, elastic stop nuts, or nylon-insert lock nuts. The m8 nyloc nut and the m6 nyloc nut are the two most used configurations.

The stainless steel nylock nut's plastic or nylon insert is located at the end of the fastener. This nylon insert's inner diameter, or ID, is a little smaller than the screw's main or larger diameter. The stainless steel Nylock wing nuts' insert experiences elastic deformation over time. This is due to the screw's threads not having threads turned into them. By creating friction against the screw while being compressed radially, the nylon insert locks the 3/8 stainless steel Nyloc nuts.
The inability to use stainless steel nylock wing nuts with various chemicals and at high temperatures is one of their drawbacks. The nylon insert, which is thermoplastic by nature, can get deformed when using these nuts at high temperatures.
Up to 250 °F or 121 °C, Indian standards for nylock nuts maintain their locking capacity.
One of the top manufacturers and suppliers of nylock nuts in India is rajveerfasteners
Standard Dimension |
Description |
Size |
Threads |
Finish |
Material Grade |
|---|---|---|---|---|---|
ISO 4032 |
Nylock Nuts |
M-16 to M-100 |
MM |
Bright |
SS 304, SS 316, SS 316L, 316S31 |
DIN 934 |
Nylock Nuts |
M-16 to M-100 |
MM |
Bright |
SS 304, SS 316, SS 316L, 316S31 |
ANSI B18.2.2 |
Nylock Nuts |
5/8″ to 4″ |
Unc |
Bright |
ASTM A-194 8 , 8M, 8T |
BS 1083 |
Nylock Nuts |
5/8″ to 4″ |
BSW |
Bright |
ASTM A-194 8 , 8M, 8T |
Standard Dimension |
Description |
Size |
Threads |
Finish |
Material Grade |
|---|---|---|---|---|---|
ISO 4032 |
Nylock Nuts |
M-16 to M-100 |
MM |
Bright |
S32205 , S31803 |
DIN 934 |
Nylock Nuts |
M-16 to M-100 |
MM |
Bright |
S32205 , S31803 |
ANSI B18.2.2 |
Nylock Nuts |
5/8″ to 4″ |
Unc |
Bright |
S32205 , S31803 |
BS 1083 |
Nylock Nuts |
5/8″ to 4″ |
BSW |
Bright |
S32205 , S31803 |
Standard Dimension |
Description |
Size |
Threads |
Finish |
Material Grade |
|---|---|---|---|---|---|
ISO 4032 |
Nylock Nuts |
M-16 to M-100 |
MM |
Plain / Zinc plated / HDG |
4.6, 5.6, 6.6, 8.8 |
DIN 934 |
Nylock Nuts |
M-16 to M-100 |
MM |
Plain / Zinc plated / HDG |
4.6, 5.6, 6.6, 8.8 |
ANSI B18.2.2 |
Nylock Nuts |
5/8″ to 4″ |
Unc |
Plain / Zinc plated / HDG |
S, R, T |
BS 1083 |
Nylock Nuts |
5/8″ to 4″ |
BSW |
Plain / Zinc plated / HDG |
A, B, C |
Standard Dimension |
Description |
Size |
Threads |
Finish |
Material Grade |
|---|---|---|---|---|---|
ISO 4032 |
Nylock Nuts |
M-16 to M-100 |
MM |
Plain / Zinc plated / HDG / Teflon / PTFE / Zinc aluminum flake / Geomet |
10, 12 |
DIN 934 |
Nylock Nuts |
M-16 to M-100 |
MM |
Plain / Zinc plated / HDG / Teflon / PTFE / Zinc aluminum flake / Geomet |
10, 12 |
ANSI B18.2.2 |
Nylock Nuts |
5/8″ to 4″ |
Unc |
Plain / Zinc plated / HDG / Teflon / PTFE / Zinc aluminum flake / Geomet |
ASTM A-194 4 , L4, 7 , 7M |
BS 1083 |
Nylock Nuts |
5/8″ to 4″ |
BSW |
Plain / Zinc plated / HDG / Teflon / PTFE / Zinc aluminum flake / Geomet |
ASTM A-194 4 , L4, 7 , 7M |
Size |
Finished Hex |
Heavy Hex |
Finished Jam |
Heavy Hex Jam |
Square |
Heavy Square |
|---|---|---|---|---|---|---|
1/2″ |
3.750 |
6.540 |
2.620 |
4.000 |
5.780 |
7.870 |
5/8″ |
7.330 |
11.900 |
4.930 |
6.960 |
10.800 |
14.300 |
3/4″ |
11.900 |
19.300 |
7.700 |
11.000 |
15.400 |
23.500 |
7/8″ |
19.000 |
29.700 |
12.000 |
16.700 |
24.500 |
36.200 |
1″ |
28.300 |
42.500 |
17.600 |
23.500 |
36.300 |
51.500 |
1-1/8″ |
40.300 |
59.200 |
24.700 |
32.400 |
52.500 |
72.400 |
1-1/4″ |
54.300 |
78.600 |
36.100 |
45.800 |
70.600 |
95.500 |
1-3/8″ |
73.000 |
102.000 |
47.900 |
59.300 |
94.500 |
125.000 |
1-1/2″ |
94.300 |
131.000 |
60.900 |
74.800 |
122.000 |
161.000 |
1-5/8″ |
162.000 |
91.600 |
||||
1-3/4″ |
151.000 |
204.000 |
100.000 |
114.000 |
||
1-7/8″ |
241.000 |
134.000 |
||||
2″ |
224.000 |
299.000 |
140.000 |
165.000 |
||
2-1/4″ |
419.000 |
227.000 |
||||
2-1/2″ |
564.000 |
332.000 |
||||
2-3/4″ |
738.000 |
429.000 |
||||
3″ |
950.000 |
545.000 |
||||
3-1/4″ |
1194.000 |
651.000 |
||||
3-1/2″ |
1526.000 |
851.000 |
||||
3-3/4″ |
1812.000 |
1005.000 |
||||
4″ |
2180.000 |
1200.000 |
Nylock Nuts Dimension
**All measurements in millimeters**
Nylon Insert Stop Nuts, Regular Pattern , Class 8 |
DIN 985 |
|||||
|---|---|---|---|---|---|---|
F |
G |
H |
I |
|||
Nominal Size |
Width Across Flats |
WidCtohr nAecrrsoss |
Thickness |
Wrenching Height |
||
Max |
Min |
Min |
Max |
Min |
Min |
|
M3 |
5.50 |
5.32 |
6.01 |
4 |
3.7 |
2.4 |
M4 |
7.00 |
6.78 |
7.66 |
5 |
4.7 |
2.9 |
M5 |
8.00 |
7.78 |
8.79 |
5 |
4.7 |
3.2 |
M6 |
10.00 |
9.78 |
11.05 |
6 |
5.7 |
4 |
M7 |
11.00 |
10.73 |
12.12 |
7.5 |
7.14 |
4.7 |
M8 |
13.00 |
12.73 |
14.38 |
8 |
7.64 |
5.5 |
M10 |
17.00 |
16.73 |
18.90 |
10 |
9.64 |
6.5 |
M12 |
19.00 |
18.67 |
21.10 |
12 |
11.57 |
8 |
M14 |
22.00 |
21.67 |
24.49 |
14 |
13.3 |
9.5 |
M16 |
24.00 |
23.67 |
26.75 |
16 |
15.3 |
10.5 |
M18 |
27.00 |
26.16 |
29.56 |
18 |
17.66 |
13 |
M20 |
30.00 |
29.16 |
32.95 |
20 |
18.7 |
14 |
Nylock Nuts |
Price |
DIN 985 18-8 Stainless Steel plain Metric hex nyloc insert lock nuts |
Price: US $0.02-5 / Piece 10000 Pieces (Min. Order) |
Stainless Steel Nyloc/Nylon Insert Locking Nuts |
Price: US $0.001-0.05 / Pieces 1000 Pieces (Min. Order) |
carbon steel galvanized din982 din985 nyloc nut |
Price: US $0.01-0.5 / Piece 1000 Pieces (Min. Order) |
Wheel Locking Self-locking Nuts, Nyloc Nylock Nuts, Din 982 985 Insert Nylon Lock Nut Stainless Steel Nuts |
Price: US $0.11-100 / Piece 1 Piece (Min. Order) |
M6 M8 M10 M12 M16 Nyloc Nylon Insert Nuts Stainless Steel High Grade , DIN982 |
Price: US $0.01-0.5 / Piece 10000 Pieces (Min. Order) |
| Bolt Base Stainless Steel Nyloc Colored Brass Domed Nut |
Price: US $0.01-0.1 / Unit 10000 Units (Min. Order) |
Stainless Steel High Grade DIN982 Nyloc Nylon Insert Nuts |
Price: US $0.01-0.5 / Piece 10000 Pieces (Min. Order) |
Carbon Steel HDG Nyloc Nut/Stainless Steel DIN985 Hex Nylon Lock Nuts for Industry Nylon Lock Hex Nut DIN985 |
Price: US $15.0 / Pieces 10000 Pieces (Min. Order) |
Made in Taiwan DIN 986 A2 Stainless Steel M8 Dome Nykic Nuts |
Price: US $0.01-0.1 / Unit 10000 Units (Min. Order) |
| DIN985 M8 Stainless Steel Nylon Insert Hex Lock Nuts A2 Hexagon Nyloc Self Locking Nut |
Price: US $0.01-0.1 / Unit 10000 Units (Min. Order) |
DIN985 Nylon Insert Lock Nuts M2-Stainless Steel |
Price: US $0.02-0.5 / Piece 1000 Pieces (Min. Order) |
Din934 Screw Ss Nyloc Lock Hex A2-70 M3 Eye M6 Lifting Astm A194 Zinc Din 985 M12 Weld Din929 316 Stainless Steel Nut |
Price: US $0.001-10 / Piece 1000000 Pieces (Min. Order) |
nylon 304 stainless steel lock nut DIN985 |
Price: US $0.05-0.5 / Piece 1 Piece (Min. Order) |
high quality stainless steel nyloc nut |
Price: US $600-1400 / Ton 0.5 Tons (Min. Order) |
