FF-R-556

View detailed technical data, stock status, and sourcing information for: FF-R-556
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-087-0766

Item Name Code

13393

Assigment Date

12/11/1979 (46 years ago)

"an item designed to electrically connect and mechanically position the base of an item having plug-in-type contacts, and to facilitate replacement of the item accommodated. It includes sockets which accommodate the contacts of capacitors, coils, crystals, electron tubes, relays, semiconductor devices and vibrators. Excludes:sockets or receptacles designed to accommodate plug-in component circuit boards (printed circuit boards) and electronic modules or sub-assemblies. Also excludes:heat-dissipating (not heat-sinks) sockets for mounting "power transistors"."

round center hole shape style, 0.124 inches minimum and 0.129 inches maximum hole diameter, round peripheral shape style, rectangular cross-sectional shape style, 0.026 inches minimum and 0.032 inches maximum thickness

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: rectangular
Hole Diameter: 0.124 inches minimum and 0.129 inches maximum
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.026 inches minimum and 0.032 inches maximum
Overall Diameter: 0.354 inches minimum and 0.365 inches maximum
Material: copper alloy 11 overall
Material Document And Classification: qq-b-613,temper 1/2 hard fed spec single material response overall
Surface Treatment: oxide film overall
Surface Treatment Document And Classification: mil-f-495 mil spec single treatment response overall
Nondefinitive Spec/Std Data: 1 type and 1 class

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
FF-R-556	Flat Washer
MS51936-9	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-01-087-0766?

The FSCG of the NSN 5310-01-087-0766 is 5310

Does the NSN 5310-01-087-0766 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-01-087-0766 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 5310-01-087-0766 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-087-0766 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 5310-01-087-0766 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Tue, Dec 11, 1979