1EAK7

View detailed technical data, stock status, and sourcing information for: 1EAK7
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-657-1770

Item Name Code

14218

Assigment Date

08/02/2016 (10 years ago)

A major transverse structural member which divides, supports and gives shape to the fuselage, hull, tank, and the like. It can form a complete barrier and may also be designed for pressure tight applications.

12 external key quantity, 0.256 inches nominal hole diameter, 6150-01-633-6567;load bank,electrical end item identification, 0.022 inches minimum and 0.025 inches maximum material thickness, 0.478 inches nominal outside diameter

Product Characteristics

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

Hole Diameter: 0.256 inches nominal
Outside Diameter: 0.478 inches nominal
External Key Quantity: 12
Material Thickness: 0.022 inches minimum and 0.025 inches maximum
End Item Identification: 6150-01-633-6567;load bank,electrical
Part Name Assigned By Controlling Agency: lock washer
Special Features: fits bolt sizes: 0.250 inch nominal;rockwell hardness: c40 to c50;meets/exceeds: asme b18.21.1
Color: silver overall
Material: steel comp 410 overall
Style Designator: countersink external teeth

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
1EAK7	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-01-657-1770?

The FSCG of the NSN 5310-01-657-1770 is 5310

Does the NSN 5310-01-657-1770 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-01-657-1770 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 5310-01-657-1770 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-657-1770 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 5310-01-657-1770 was assigned to the Federal Catalog?

It was assigned 10 years ago, on Tue, Aug 2, 2016