XI78

View detailed technical data, stock status, and sourcing information for: XI78
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Federal Supply Group

Hand Tools

Federal Supply Classification

5120 Nonpowered Nonedged Hand Tools

National Stock Number

5120-01-180-5155

Item Name Code

03555

Assigment Date

05/30/1984 (42 years ago)

A metal ring designed to provide a seating surface for a valve, poppet, engine it is made of special high-grade alloy metal that can withstand high operating temperatures. For fluid valves, see seat, valve.

0.078 inches nominal small end head thickness, 0.094 inches nominal large end head thickness, 2.469 inches nominal overall length, 0.234 inches nominal large end outside diameter, 0.219 inches nominal small end outside diameter

Product Characteristics

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

Overall Length: 2.469 inches nominal
Large End Outside Diameter: 0.234 inches nominal
Small End Outside Diameter: 0.219 inches nominal
Large End Head Thickness: 0.094 inches nominal
Small End Head Thickness: 0.078 inches nominal
Wrenching Surface Size: 0.109 inches nominal first end
Wrenching Surface Size: 0.125 inches nominal second end
Wrenching Surface Shape: 6 point both ends internal
Wrenching End Offset Angle: 10.0 degrees nominal
Material: steel overall
Surface Treatment: chromium overall
Style Designator: shallow angular offset double head

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5120-01-197-6696	No Name Available	08/01/1993

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
XI78	Box Wrench

FAQs

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

What is the FSCG of the NSN 5120-01-180-5155?

The FSCG of the NSN 5120-01-180-5155 is 5120

Does the NSN 5120-01-180-5155 have a Schedule B code assigned?

Yes, the Schedule B code is 8204110030

Does NSN 5120-01-180-5155 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 5120-01-180-5155 contain precious materials?

Precious metal content is unknown

Does NSN 5120-01-180-5155 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 5120-01-180-5155 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Wed, May 30, 1984