NMC557-4A

View detailed technical data, stock status, and sourcing information for: NMC557-4A
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5325 Fastening Devices

National Stock Number

5325-00-038-9997

Item Name Code

33729

Assigment Date

11/10/1972 (53 years ago)

An item of any peripheral shape having flanges or groove(s) on its outer perimeter to provide a self-retaining characteristic when inserted in a hole, clamp, or the like. Designed for the purpose of protecting and/or insulating wires, cables and other items passing through it. Excludes:bushing, nonmetallic; bumper; and insulator bushing.

0.025 inches minimum and 0.030 inches maximum flange thickness, 0.140 inches minimum and 0.160 inches maximum overall height, round grommet style, 0.090 inches minimum and 0.100 inches maximum groove width, 0.240 inches minimum and 0.260 inches maximum hole diameter

Product Characteristics

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

Hole Diameter: 0.240 inches minimum and 0.260 inches maximum
Groove Width: 0.090 inches minimum and 0.100 inches maximum
Flange Thickness: 0.025 inches minimum and 0.030 inches maximum
Overall Height: 0.140 inches minimum and 0.160 inches maximum
Grommet Style: round
Large Flange Outside Diameter: 0.344 inches minimum and 0.364 inches maximum
Groove Outside Diameter: 0.293 inches minimum and 0.313 inches maximum
Grommet Construction Type: split
Material: plastic polytetrafluoroethylene 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
NMC557-4A	Nonmetallic Grommet

FAQs

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

What is the FSCG of the NSN 5325-00-038-9997?

The FSCG of the NSN 5325-00-038-9997 is 5325

Does the NSN 5325-00-038-9997 have a Schedule B code assigned?

Yes, the Schedule B code is 9606100000

Does NSN 5325-00-038-9997 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 5325-00-038-9997 contain precious materials?

Precious metal content is unknown

Does NSN 5325-00-038-9997 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 5325-00-038-9997 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Fri, Nov 10, 1972