4-40, 6-32, 8-32, 10-24, 1/4"-20, 5/16"-18, 3/8"-16, 1/2"-13 UNC
Nyloc Nuts DIN 985 Self Locking Hex Nuts Nylon Insert Lock Nuts A2 Stainless Steel 

High-quality materials, environmentally friendly,  safe and reliable, durable and long life. Excellent craftsmanship, Smooth without burrs, quick and simple use.
Standard: UNC
● DIN 985 (ISO 10511) (GB/T 6172) (UNI 7474) (NF E 25-412 )
 Drive Style: External Hex
 Nuts Material: A2 Stainless Steel  ( SUS304 ) ( 304 Stainless Steel )
Thread Size: 
4-40 UNC
6-32 UNC
8-32 UNC
10-24 UNC
1/4"-20 UNC
5/16"-18 UNC
3/8"-16 UNC
1/2"-13 UNC
DataCaciques