LS4998TB90

View detailed technical data, stock status, and sourcing information for: LS4998TB90
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Federal Supply Group

Books, Maps, and Other Publications

Federal Supply Classification

7690 Miscellaneous Printed Matter

National Stock Number

7690-01-581-5711

Item Name Code

25860

Assigment Date

01/21/2010 (16 years ago)

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

0.050 inches nominal length, singular usage form, 0.003 inches nominal thickness, 0.050 inches nominal width, square basic shape style

Product Characteristics

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

Width: 0.050 inches nominal
Thickness: 0.003 inches nominal
Length: 0.050 inches nominal
Basic Shape Style: square
Usage Form: singular
Part Name Assigned By Controlling Agency: marker, identificat elec
Special Features: finish-non-specular protective coating; part class desg. tb; item ident 90 of p/n; black, fed std 595 color 27038
Material: plastic polyester

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
LS4998TB90	Identification Marker

FAQs

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

What is the FSCG of the NSN 7690-01-581-5711?

The FSCG of the NSN 7690-01-581-5711 is 7690

Does the NSN 7690-01-581-5711 have a Schedule B code assigned?

Yes, the Schedule B code is 4911990000

Does NSN 7690-01-581-5711 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 7690-01-581-5711 contain precious materials?

Item does not contain precious metal.

Does NSN 7690-01-581-5711 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 7690-01-581-5711 was assigned to the Federal Catalog?

It was assigned 16 years ago, on Thu, Jan 21, 2010