5340-01-257-7581

Find complete technical information, availability, and procurement data for: 5340-01-257-7581
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-257-7581

Item Name Code

40280

Assigment Date

06/23/1987 (39 years ago)

An item designed to fit over a packing gland by mating with a surface of a second part which together will retain into a narrow groove or confined space the packing, preformed or o-ring, or an item designed to fit over a rod or shaft, to mate with a stuffing box to confine packing material. It may function as a static or dynamic seal retainer with the packing located on, around, or in the centerline direction of the rod or shaft axis. It may have holes or joints for mounting, be threaded or unthreaded. See also packing nut and packing nut, stuffing tube.

0.246 inches minimum and 0.254 inches maximum width across flats, left internal and right internal threads style designator, 1.183 inches minimum and 1.193 inches maximum length, 80250-nas1831 professional/industrial association standard specification/standard data, hexagon cross-sectional shape

Product Characteristics

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

Length: 1.183 inches minimum and 1.193 inches maximum
Cross-Sectional Shape: hexagon
Width Across Flats: 0.246 inches minimum and 0.254 inches maximum
Style Designator: left internal and right internal threads
Specification/Standard Data: 80250-nas1831 professional/industrial association standard

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
NAS1831A4B19	Spacing Threaded Standoff

FAQs

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

What is the FSCG of the NSN 5340-01-257-7581?

The FSCG of the NSN 5340-01-257-7581 is 5340

Does NSN 5340-01-257-7581 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 5340-01-257-7581 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-257-7581 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 5340-01-257-7581 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Tue, Jun 23, 1987