5310-01-261-5494

Find complete technical information, availability, and procurement data for: 5310-01-261-5494
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-261-5494

Item Name Code

15887

Assigment Date

08/15/1987 (39 years ago)

A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see cell, optical element. Excludes:ring, externally threaded.

1.870 inches minimum and 1.880 inches maximum nut diameter, right-hand thread direction, 2b thread class, 0.040 inches minimum and 0.070 inches maximum drive point depth, round nut style

Product Characteristics

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

Thread Class: 2b
Thread Direction: right-hand
Drive Point Depth: 0.040 inches minimum and 0.070 inches maximum
Nut Style: round
Nut Diameter: 1.870 inches minimum and 1.880 inches maximum
Nut Thickness: 0.245 inches minimum and 0.255 inches maximum
Drive Point Quantity: 4
Drive Point Diameter: 0.063 inches minimum and 0.069 inches maximum
Thread Series: uns
Thread Quantity Per Inch: 40
Nominal Thread Size: 1.653 inches
Material: plastic polyetherimide (pei) and glass fiber overall
Material Document And Classification: ultem 2200-7301 mfr ref single material response overall

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
447144016803	Round Plain Nut
5005838	Round Plain Nut
5005838.01	Round Plain Nut
5310PL0787732	Round Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-01-261-5494?

The FSCG of the NSN 5310-01-261-5494 is 5310

Does NSN 5310-01-261-5494 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 5310-01-261-5494 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-261-5494 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 5310-01-261-5494 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Sat, Aug 15, 1987