1378574

View detailed technical data, stock status, and sourcing information for: 1378574
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-917-4180

Item Name Code

04521

Assigment Date

07/22/1966 (60 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

20.910 inches minimum and 21.000 inches maximum center hole diameter, 0.269 inches minimum and 0.281 inches maximum cross-sectional height, o-ring cross-sectional shape style, 68.0 shore durometer a nominal overall hardness rating, nonmagnetic special features

Product Characteristics

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

Cross-Sectional Shape Style: o-ring
Cross-Sectional Height: 0.269 inches minimum and 0.281 inches maximum
Center Hole Diameter: 20.910 inches minimum and 21.000 inches maximum
Hardness Rating: 68.0 shore durometer a nominal overall
Special Features: nonmagnetic
Material: rubber butadiene-acrylonitrile class nbr overall
Material Document And Classification: mil-p-5516,cl b mil spec single material response overall
Test Data Document: "81349-mil-n-21945 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Fsc Application Data: mechanism section mk 1 mod 1,underwater mine
Reference Number Differentiating Characteristics: as differentiated by pac test and feat

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
1378574	Preformed Packing

FAQs

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

What is the FSCG of the NSN 5330-00-917-4180?

The FSCG of the NSN 5330-00-917-4180 is 5330

Does the NSN 5330-00-917-4180 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5330-00-917-4180 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 5330-00-917-4180 contain precious materials?

Item does not contain precious metal.

Does NSN 5330-00-917-4180 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 5330-00-917-4180 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Jul 22, 1966