5340-01-380-1558

Find complete technical information, availability, and procurement data for: 5340-01-380-1558
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-380-1558

Item Name Code

40280

Assigment Date

09/15/1993 (32 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

2b left internal (includes thru thread) thread class, right-hand left internal (includes thru thread) thread direction, right-hand right external thread direction, 0.250 inches nominal right external thread length, 2a right external thread class

Product Characteristics

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

Thread Class: 2a right external
Thread Class: 2b left internal (includes thru thread)
Thread Direction: right-hand right external
Thread Direction: right-hand left internal (includes thru thread)
Thread Length: 0.250 inches nominal right external
Thread Length: 0.160 inches nominal left internal (includes thru thread)
Length: 0.188 inches nominal
Cross-Sectional Shape: hexagon
Width Across Flats: 0.188 inches nominal
Thread Quantity Per Inch: 40 right external
Thread Quantity Per Inch: 56 left internal (includes thru thread)
Nominal Thread Size: 0.086 inches left internal (includes thru thread)
Nominal Thread Size: 0.112 inches right external
Right Projection Diameter: 0.312 inches nominal
Right Projection Length: 0.112 inches nominal
Material: steel comp 303 overall
Material Document And Classification: astm a582 cond a, cd assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Style Designator: left internal and right external thread
Thread Series Designator: unc left internal (includes thru thread)
Thread Series Designator: unc right external

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
995-1973-001	Spacing Threaded Standoff

FAQs

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

What is the FSCG of the NSN 5340-01-380-1558?

The FSCG of the NSN 5340-01-380-1558 is 5340

Does NSN 5340-01-380-1558 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 5340-01-380-1558 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-380-1558 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5340-01-380-1558 was assigned to the Federal Catalog?

It was assigned 32 years ago, on Wed, Sep 15, 1993