2A1A

View detailed technical data, stock status, and sourcing information for: 2A1A
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5920 Fuses, Arrestors, Absorbers and Protectors

National Stock Number

5920-00-521-8331

Item Name Code

00311

Assigment Date

01/01/1963 (63 years ago)

0.650 inches nominal overall length, above ground side circuit protector block location, carbon material, 0.500 inches nominal overall diameter, one slotted head screw; 7/16 x 20 in. thd special features

Product Characteristics

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

Overall Length: 0.650 inches nominal
Overall Diameter: 0.500 inches nominal
Circuit Protector Block Location: above ground side
Special Features: one slotted head screw; 7/16 x 20 in. thd
Material: carbon
Shape: cylindrical

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5920-00-510-7666	No Name Available	02/01/1983
5920-00-545-8188	No Name Available	02/11/1966

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
107C	Telephone Protector Block
2A1A	Telephone Protector Block
B1016055	Telephone Protector Block
MB1001	Telephone Protector Block
MB1324	Telephone Protector Block
NE2A1A	Telephone Protector Block
SCB95811	Telephone Protector Block

FAQs

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

What is the FSCG of the NSN 5920-00-521-8331?

The FSCG of the NSN 5920-00-521-8331 is 5920

Does the NSN 5920-00-521-8331 have a Schedule B code assigned?

Yes, the Schedule B code is 8535400000

Does NSN 5920-00-521-8331 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 5920-00-521-8331 contain precious materials?

Precious metal content is unknown

Does NSN 5920-00-521-8331 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 5920-00-521-8331 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963