4340318

View detailed technical data, stock status, and sourcing information for: 4340318
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-275-9278

Item Name Code

15933

Assigment Date

01/01/1963 (63 years ago)

0.125 inches nominal material thickness, 0.500 inches nominal hole diameter, 45.0 degrees nominal recess angle, 0.684 inches minimum and 0.685 inches maximum outside diameter, 0.562 inches nominal recess 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: 0.500 inches nominal
Outside Diameter: 0.684 inches minimum and 0.685 inches maximum
Recess Diameter: 0.562 inches nominal
Material Thickness: 0.125 inches nominal
Recess Angle: 45.0 degrees nominal
Special Features: od at base has chamfer 0.016 in. by 45.0 deg
Material: nickel alloy uns n10001 overall
Material Document And Classification: mil-n-894 mil spec single material response overall
Style Designator: recessed

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2805-00-569-0599	No Name Available	10/10/1966

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
4340318	Recessed Washer
4340318-7	Recessed Washer
DE40318	Recessed Washer
DE40318L	Recessed Washer
SN3706PCDE40318	Recessed Washer
SN4006PCDE40318	Recessed Washer
SN4066PCDE40318	Recessed Washer
SN4107PCDE40318	Recessed Washer
SN4307PCDE40318	Recessed Washer
SN4507PCDE40318	Recessed Washer
SN4607PCDE40318	Recessed Washer
SN4907PCDE40318	Recessed Washer
SN5007PCDE40318	Recessed Washer
SN5907PCDE40318	Recessed Washer
SN6007PCDE40318	Recessed Washer
SN6108PCDE40318	Recessed Washer
SN6807PCDE40318	Recessed Washer

FAQs

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

What is the FSCG of the NSN 5310-00-275-9278?

The FSCG of the NSN 5310-00-275-9278 is 5310

Does the NSN 5310-00-275-9278 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5310-00-275-9278 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 5310-00-275-9278 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-275-9278 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 5310-00-275-9278 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963