Product Description

MS24665-227 is a Military Standard corrosion resistant steel cotter pin used to lock castellated nuts and bolts in aerospace and mechanical assemblies. It functions as a positive locking device inserted through a drilled fastener or shaft and bent over to prevent nut rotation and loosening. Intended applications include aircraft airframe and hardware locations where a 5/64 inch diameter by 1/2 inch long cotter pin is specified to secure critical joints.

0 1. Overview

This cotter pin is part of the MS24665 series of split pins and is manufactured from corrosion resistant steel in the 302 or 304 composition range. Dimensional data specify a nominal diameter of 5/64 inch, with actual diameter between 0.072 and 0.076 inches, and an under-loop length between 0.438 and 0.625 inches. The material hardness is controlled between 60.0 and 70.0 Rockwell superficial 15-N overall. The pin is supplied with a passivated surface treatment in accordance with ASTM A380 and material requirements in accordance with ASTM A493. It is classified as a standard style cotter pin with a point configuration described as hammer lock or extended prong square cut. References associate this item with National Stock Number 5315-00-855-6804, a country of origin of the United States, and Schedule B export classification 7318.24.0000. The pin is intended for single-use service; once installed and bent, it is replaced rather than straightened and reused.

0 2. Key Features

  • Military Standard MS24665 series cotter pin
  • Corrosion resistant steel construction
  • Nominal size 5/64 inch diameter by 1/2 inch length
  • Passivated surface treatment per ASTM A380
  • Material in accordance with ASTM A493 302 or 304 stainless steel
  • Hardness range 60.0 to 70.0 Rockwell superficial 15-N
  • Point type hammer lock or extended prong square cut
  • Associated with NSN 5315-00-855-6804
  • Intended for single-use installation
0 3. Specifications

Part Number: MS24665-227
Standard: MS24665 (Pin, Cotter, Split)
Type: Cotter pin, split pin
Material: Corrosion resistant steel, composition 302 or 304
Material Specification: ASTM A493
Diameter (Nominal): 5/64 inch
Diameter Range: 0.072 to 0.076 inches
Under-Loop Length Range: 0.438 to 0.625 inches
Overall Length (Nominal Reference): 1/2 inch
Point Type: Hammer lock or extended prong square cut
Style Designator: Standard
Surface Treatment: Passivated
Surface Treatment Specification: ASTM A380
Hardness: 60.0 to 70.0 Rockwell superficial 15-N overall
Country of Origin: United States
NSN: 5315-00-855-6804
Schedule B: 7318.24.0000

FAQs

01. What are the dimensions of the MS24665-227 cotter pin?

The MS24665-227 cotter pin has a nominal size of 5/64 inch diameter by 1/2 inch length, with an actual diameter range of 0.072 to 0.076 inches and an under-loop length between 0.438 and 0.625 inches.

02. What material is used for the MS24665-227 cotter pin?

The MS24665-227 cotter pin is made from corrosion resistant steel in either 302 or 304 composition in accordance with ASTM A493.

03. What surface treatment is applied to MS24665-227?

MS24665-227 receives a passivated surface treatment in accordance with ASTM A380.

04. What hardness range is specified for the MS24665-227 cotter pin?

The MS24665-227 cotter pin has a specified hardness range of 60.0 to 70.0 Rockwell superficial 15-N overall.

05. Which National Stock Number is associated with MS24665-227?

MS24665-227 is associated with National Stock Number 5315-00-855-6804.

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