Low-Strength Steel Serrated Flange Locknut

$4.65

Zinc-Plated, 4-40 Thread, 1/4″ Wide

Pack of 25

Description

Drive Style

External Hex

Hex Nut Profile

Standard

Locking Type

Serrations

Fastener Strength Rating

Low

Material

Zinc-Plated Steel

Thread Size

4-40

Width

1/4

Height

5/32

Flange

Diameter

25/64

Thickness

0.02″

Nut Type

Flange, Hex, Locknut

Performance

Vibration Resistant

System of Measurement

Inch

Thread Direction

Right Hand

Thread Fit

Unified Standard Class 2B

Thread Spacing

Coarse

Thread Type

UNC

Country of Origin

Canada, China, Germany, India, Italy, Japan, Mexico, Taiwan, Thailand, United States, Vietnam

DFARS Compliance

Specialty Metals COTS-Exempt

ECCN

EAR99

REACH Compliance

REACH (EC 1907/2006) (01/23/2024, 240 SVHC) Compliant

RoHS Compliance

RoHS 3 (2015/863/EU) Compliant

Schedule B Number

731816.0000

USMCA Qualifying

No

Serrations bite into material for mild vibration resistance while the flange eliminates the need for a separate washer. These nuts are ideal for securing screws in oversized or irregularly shaped holes since the flange covers a larger area than standard nuts. You can reuse them over and over without sacrificing strength, however, the serrations may mar the surface of your material. Also known as collar nuts.

LowStrength SteelAbout half the strength of medium-strength steel nuts, these are suitable for light duty fastening applications, such as securing access panels. Use them with screws that have a similar strength rating to avoid stripping threads during installation.

ZincPlated SteelA step up from plain steel, the zinc plating withstands occasional exposure to moisture.