S2-56X5-16

View detailed technical data, stock status, and sourcing information for: S2-56X5-16
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-903-3637

Item Name Code

06657

Assigment Date

01/01/1960 (66 years ago)

undercut pan no. 2 head style, 0.312 inches nominal fastener length, 2a thread class, right-hand thread direction, 0.312 inches maximum thread 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: 0.312 inches maximum
Fastener Length: 0.312 inches nominal
Head Style: undercut pan no. 2
Head Diameter: 0.168 inches nominal
Head Height: 0.055 inches nominal
Internal Drive Style: slot
Nominal Thread Diameter: 0.086 inches
Features Provided: o ring
Thread Quantity Per Inch: 56
Screw Material: steel corrosion resisting
Screw Surface Treatment: passivate
Thread Series Designator: unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-832-5201	No Name Available	06/06/1969

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
S2-56X5-16	Machine Screw
SMC540388-3	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-903-3637?

The FSCG of the NSN 5305-00-903-3637 is 5305

Does the NSN 5305-00-903-3637 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-903-3637 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 5305-00-903-3637 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-903-3637 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 5305-00-903-3637 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960