S1-4-20X7-8

View detailed technical data, stock status, and sourcing information for: S1-4-20X7-8
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-864-6545

Item Name Code

06657

Assigment Date

01/01/1962 (64 years ago)

2a thread class, 0.875 inches minimum thread length, fillister head style, right-hand thread direction, 0.875 inches nominal fastener length

Product Characteristics

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

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.875 inches minimum
Fastener Length: 0.875 inches nominal
Head Style: fillister
Head Diameter: 0.517 inches nominal
Head Height: 0.148 inches nominal
Internal Drive Style: slot
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 20
Screw Material: steel
Screw Surface Treatment: passivate
Thread Series Designator: unc

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
10975126	Machine Screw
HT14S0S14	Machine Screw
S1-4-20X7-8	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-864-6545?

The FSCG of the NSN 5305-00-864-6545 is 5305

Does the NSN 5305-00-864-6545 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-864-6545 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 5305-00-864-6545 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-864-6545 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 5305-00-864-6545 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962