FRS S421

View detailed technical data, stock status, and sourcing information for: FRS S421
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Federal Supply Group

Hand Tools

Federal Supply Classification

5120 Nonpowered Nonedged Hand Tools

National Stock Number

5120-01-335-0823

Item Name Code

03518

Assigment Date

03/05/1991 (35 years ago)

1.675 inches maximum drive end outside diameter, 2.93 inches minimum overall length, 1.675 inches maximum wrenching end outside diameter, 1.312 inches nominal single end wrenching surface size, 0.656 inches minimum wrenching end opening depth

Product Characteristics

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

Overall Length: 2.93 inches minimum
Wrenching End Outside Diameter: 1.675 inches maximum
Drive End Outside Diameter: 1.675 inches maximum
Wrenching End Opening Depth: 0.656 inches minimum
Wrenching Surface Size: 1.312 inches nominal single end
Drive Surface Size: 0.500 inches nominal single end
Features Provided: manual tool
Wrenching Surface Shape: 12 point single end internal
Drive End Shape: square single end internal
Material: steel overall
Surface Treatment: chromium overall
Style Designator: internal-internal
Specification/Standard Data: 05047-asme b107.110 cat 1 professional/industrial association standard
Nondefinitive Spec/Std Data: 1 type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5120-01-230-0191	No Name Available	12/01/1994
5120-01-428-4705	No Name Available	11/01/2012
5120-01-589-8697	No Name Available	11/01/2012
5120-01-604-3735	No Name Available	02/01/2024

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
1FX20	Socket Wrench Socket
FRS S421	Socket Wrench Socket
J5342	Socket Wrench Socket
S421	Socket Wrench Socket
STP 5342G	Socket Wrench Socket

FAQs

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

What is the FSCG of the NSN 5120-01-335-0823?

The FSCG of the NSN 5120-01-335-0823 is 5120

Does the NSN 5120-01-335-0823 have a Schedule B code assigned?

Yes, the Schedule B code is 8204200000

Does NSN 5120-01-335-0823 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 5120-01-335-0823 contain precious materials?

Item does not contain precious metal.

Does NSN 5120-01-335-0823 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 5120-01-335-0823 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Tue, Mar 5, 1991