18-8 Stainless Steel Nylon-Insert Locknut
Black-Oxide, M8 x 1.25 Thread
Thread Direction | Right Hand |
Hex Nut Profile | Standard |
Locking Type | Nylon Insert |
Finished Material | Black-Oxide 18-8 Stainless Steel |
Thread Size | M8 |
Thread Pitch | 1.25 mm |
Width | 13 mm |
Height | 8 mm |
Insert Maximum Temperature | 185° F |
Specifications Met | DIN 985 |
Drive Style | External Hex |
Nut Type | Hex, Locknut |
Performance | Vibration Resistant, Corrosion Resistant |
System of Measurement | Metric |
Thread Fit | Metric Class 6H |
Thread Spacing | Coarse |
Thread Type | Metric |
Country of Origin | China |
DFARS Compliance | Not Specialty Metals Compliant |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (02/04/2026, 253 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731816.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
Versatile yet economical, these are the most commonly used locknuts. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.
Black-Oxide 18-8 Stainless Steel—Typically chosen for their appearance, these nuts have a dark, matte coating to create a finished look. They resist rust in wet and outdoor environments, but won't hold up to the harsh chemicals that 316 stainless steel can.
The information in this 3-D model is provided for reference only.