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McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100
McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100

McMaster 90576A117 Medium-Strength Steel Nylon-Insert Locknut, Zinc Plated, M8 x 1.25 mm Thread Size, Pack of 100

UPC: | Harmonization / Schedule B : 7318.16.0000

Country of Origin: China | Shipping Weight: 1.124 lbs

$60.60 - $60.60
$60.60
$60.60 - $60.60
$60.60

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.

Medium-Strength Steel—These Grade 5, Grade C, or Class 8 nuts are your go-to for fastening most machinery and equipment. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Zinc-Plated Steel—A step up from plain steel, the zinc plating withstands occasional exposure to moisture.

Thread Direction Right Hand
Hex Nut Profile Standard
Locking Type Nylon Insert
Fastener Strength Rating Medium
Finished Material Zinc-Plated Steel
Thread Size M8
Thread Pitch 1.25 mm
Width 13 mm
Height 8 mm
Fastener Strength Grade/Class Class 8
Insert Maximum Temperature 185° F
Certificate Form Digital
Certificate Type Material Certificate with Traceable Lot Number
Drive Style External Hex
Nut Type Hex, Locknut
Performance Vibration Resistant
Specifications Met DIN 985, ISO 10511
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) (06/25/2025, 250 SVHC) Compliant
RoHS Compliance RoHS 3 (2015/863/EU) Compliant
Schedule B Number 731816.0000
U.S.–Mexico–Canada Agreement (USMCA) Qualifying No