EWB0420-8H-18

View detailed technical data, stock status, and sourcing information for: EWB0420-8H-18
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-278-4519

Item Name Code

15903

Assigment Date

05/05/1988 (38 years ago)

A washer, round in shape, and having a centrally located hole. One bearing surface is flat and unbroken, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing sleeve; or spacer, sleeve. Excludes:insulator, washer and thrust type washers.

3a thread class, 0.838 inches nominal thread length, double hexagon w/hole head style, right-hand thread direction, 1.963 inches nominal fastener length

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.838 inches nominal
Fastener Length: 1.963 inches nominal
Head Style: double hexagon w/hole
Head Height: 0.504 inches nominal
Width Between Flats: 0.556 inches minimum and 0.565 inches maximum
Extended Washer Diameter: 0.818 inches minimum and 0.823 inches maximum
Extended Washer Thickness: 0.123 inches nominal
Hole Diameter: 0.050 inches minimum and 0.060 inches maximum
Grip Diameter: 0.4985 inches minimum and 0.4995 inches maximum
Nominal Thread Diameter: 0.500 inches
Grip Length: 1.125 inches nominal
Hole Quantity: 4
Hole Type: drilled
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 200000 pounds per square inch
Hole Configuration Style: double hexagon longitudinal hole
Material: iron alloy 660 overall
Material Document And Classification: ams 5737 assn std single material response overall
Thread Series Designator: unjf

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
EWB0420-8H-18	Shear Bolt
EWB0420-8H18	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-278-4519?

The FSCG of the NSN 5306-01-278-4519 is 5306

Does the NSN 5306-01-278-4519 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-278-4519 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 5306-01-278-4519 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-278-4519 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 5306-01-278-4519 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Thu, May 5, 1988