Nut, Self-Locking, Extended Washer, Double Hexagon, Alloy Steel, Thread Class 3B

Name: Nut, Self-Locking, Extended Washer, Double Hexagon, Alloy Steel, Thread Class 3B
SKU: 3M187-18

Part # 3M187-18

The 3M187-18 Nut is a high-performance aviation fastening solution featuring a 1.125" double hexagon design and 12 threads/inch. Made from durable steel alloys and treated for corrosion resistance, it withstands up to 450°F, ensuring reliable connections in demanding environments.

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Overview

Nut is a self-locking, double hexagon component designed for secure fastening in specific applications. The part number 3M187-18 identifies this nut, which features a thread class of 3B and a nominal thread size of 1.125 inches. The nut has an overall height of 1.327 inches maximum and a width across flats ranging between 1.365 inches minimum and 1.387 inches maximum. With a temperature rating of 450.0 Fahrenheit maximum and a locking feature that utilizes a prevailing torque all metal design, this nut ensures reliable performance under demanding conditions.

Features & Benefits

Provides a self-locking feature for secure fastening
Designed with a double hexagon style for enhanced grip
Accommodates right-hand thread direction for standard applications
Utilizes a prevailing torque all metal design for reliable locking

Technical Information

NIIN

010858377

NSN

5310-01-085-8377

FSCG

5310

FSCG Category

Nuts and Washers

UNSPSC Code

31161727

UNSPSC Category

Hexagonal nuts

Lead Time (Days)

220

Product Class Description

Hexagonal nuts

Country of Origin

United States

Harmonized Tariff Schedule Code

7318152010

Manufacturer CAGE Code

56878

Storage Required

Unit Of Measure

Pieces Per Pound

DFAR Applicable

Yes

Revision Level Applicable

Yes

Product Class

31161727

Material Composition

ALLOY STEEL

Design Holder CAGE Code

76301

Design Holder

MCDONNELL AIRCRAFT C

Potential Alternates

5310010858377

Shipping Details

Dry Ice

ECCN

EAR99

Proprietary Part

Hazmat

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Boeing Distribution Services

This product is no longer available.

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