X7-8

View detailed technical data, stock status, and sourcing information for: X7-8

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X7-8
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-00-167-0660
Item Name Code
14218
Assigment Date
01/01/1963 (63 years ago)

A washer, usually round, with a centrally-located hole. Its edges and two bearing surfaces are designed in such a way that applied pressure brings into play the spring tension and/or frictional locking principle that materially resists any tendency toward turning. It may be made of one or two pieces.

0.168 inches minimum and 0.178 inches maximum hole diameter, 0.296 inches nominal outside diameter, 0.040 inches minimum and 0.046 inches maximum material thickness, dyed deep yellow special features, copper alloy overall material

Product Characteristics

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

Hole Diameter
0.168 inches minimum and 0.178 inches maximum
Outside Diameter
0.296 inches nominal
Material Thickness
0.040 inches minimum and 0.046 inches maximum
Special Features
dyed deep yellow
Material
copper alloy overall
Surface Treatment
cadmium and chromate overall
Style Designator
split helical-right hand
Departure From Cited Designator
as modified by material spec

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5310-00-984-1042 No Name Available 01/01/1960

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
20500-22 Lock Washer
AN935B8 Lock Washer
B20500-22 Lock Washer
MP360 Lock Washer
X7-8 Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-167-0660?
The FSCG of the NSN 5310-00-167-0660 is 5310
Does the NSN 5310-00-167-0660 have a Schedule B code assigned?
Yes, the Schedule B code is 7415210000
Does NSN 5310-00-167-0660 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 5310-00-167-0660 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-167-0660 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 5310-00-167-0660 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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