1321/0505D

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-678-1289

Item Name Code

18257

Assigment Date

01/23/2019 (7 years ago)

A washer of various shapes having a centrally located hole. It is primarily used as a seat for a bolt or screw to distribute pressure and has a sealing element. It may be used in connection with metallic washers to which it can be bonded.

hexagon head style, 20.0 millimeters nominal thread length, right-hand thread direction, 20.0 millimeters nominal fastener length, patch locking feature locking feature

Product Characteristics

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

Thread Direction: right-hand
Thread Length: 20.0 millimeters nominal
Fastener Length: 20.0 millimeters nominal
Head Style: hexagon
Locking Feature: patch locking feature
End Item Identification: 3930-01-659-8135
Nominal Thread Diameter: 12.0 millimeters
Part Name Assigned By Controlling Agency: set screw - hex headed
Material: steel property class 8.8 overall
Precious Material: silver
Surface Treatment: zinc and silver overall
Surface Treatment Document And Classification: code d,type 1 zinc flake silver mfr ref single treatment response overall
Thread Series Designator: m

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
1321/0505D	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-678-1289?

The FSCG of the NSN 5305-01-678-1289 is 5305

Does the NSN 5305-01-678-1289 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-678-1289 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 5305-01-678-1289 contain precious materials?

Item contains silver.

Does NSN 5305-01-678-1289 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 5305-01-678-1289 was assigned to the Federal Catalog?

It was assigned 7 years ago, on Wed, Jan 23, 2019