AB124A

View detailed technical data, stock status, and sourcing information for: AB124A
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-272-4112

Item Name Code

01869

Assigment Date

07/22/1973 (53 years ago)

A washer, usually round, with a centrally-located hole. Its edges and two bearing surfaces are designed in such a way that applied pressure brings into play the spring tension and/or frictional locking principle that materially resists any tendency toward turning. It may be made of one or two pieces.

0.250 inches nominal external straight key width, 0.750 inches nominal hole diameter, 0.219 inches nominal distance from centerline to top of internal key, 1.125 inches nominal outside diameter, 0.135 inches nominal internal straight key width

Product Characteristics

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

Hole Diameter: 0.750 inches nominal
Outside Diameter: 1.125 inches nominal
External Straight Key Width: 0.250 inches nominal
Internal Straight Key Width: 0.135 inches nominal
Distance From Centerline To Top Of Internal Key: 0.219 inches nominal
Overall Distance Including Keys: 1.438 inches nominal
External Key Quantity: 4
Internal Key Quantity: 1
Material Thickness: 0.032 inches nominal
Material: steel overall
Style Designator: key

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
AB124A	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-00-272-4112?

The FSCG of the NSN 5310-00-272-4112 is 5310

Does the NSN 5310-00-272-4112 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-00-272-4112 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 5310-00-272-4112 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-272-4112 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 5310-00-272-4112 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Sun, Jul 22, 1973