6540-01-717-8340

Find complete technical information, availability, and procurement data for: 6540-01-717-8340
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Federal Supply Group

Medical, Dental, and Veterinary Equipment and Supplies

Federal Supply Classification

6540 Supplies, Equipment and Ophthalmic Instruments

National Stock Number

6540-01-717-8340

Item Name Code

28379

Assigment Date

01/31/2024 (2 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.

4tx lens tracer part name assigned by controlling agency, 4tx lens tracer. traces both lenses for accurate dbl. 2000 point resolution encoder as well as 3d tracing designed for tracing a wide range of lens frame styles and curves. special features

Product Characteristics

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

Part Name Assigned By Controlling Agency: 4tx lens tracer
Special Features: 4tx lens tracer. traces both lenses for accurate dbl. 2000 point resolution encoder as well as 3d tracing designed for tracing a wide range of lens frame styles and curves.

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
01-051-339	Ophthalmic Lens Blocking Body
1662947	Ophthalmic Lens Blocking Body
6540NCM249586	Ophthalmic Lens Blocking Body

FAQs

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

What is the FSCG of the NSN 6540-01-717-8340?

The FSCG of the NSN 6540-01-717-8340 is 6540

Does the NSN 6540-01-717-8340 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6540-01-717-8340 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 6540-01-717-8340 contain precious materials?

Item does not contain precious metal.

Does NSN 6540-01-717-8340 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 6540-01-717-8340 was assigned to the Federal Catalog?

It was assigned 2 years ago, on Wed, Jan 31, 2024