DIN127-A2L-A4

View detailed technical data, stock status, and sourcing information for: DIN127-A2L-A4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-173-9283

Item Name Code

14218

Assigment Date

03/12/1984 (42 years ago)

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

7.6 millimeters nominal outside diameter, 4.4 millimeters nominal hole diameter, steel overall material, 0.9 millimeters nominal material thickness, mrap - cougar end item identification

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 4.4 millimeters nominal
Outside Diameter: 7.6 millimeters nominal
Material Thickness: 0.9 millimeters nominal
End Item Identification: mrap - cougar
Material: steel overall
Style Designator: split helical-right hand

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
10504037	Lock Washer
DIN127-A2L-A4	Lock Washer

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-01-173-9283?

The FSCG of the NSN 5310-01-173-9283 is 5310

Does the NSN 5310-01-173-9283 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-01-173-9283 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5310-01-173-9283 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-173-9283 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5310-01-173-9283 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Mon, Mar 12, 1984