511D9

View detailed technical data, stock status, and sourcing information for: 511D9
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-637-8037

Item Name Code

06657

Assigment Date

01/01/1963 (63 years ago)

0.250 inches nominal fastener length, right-hand thread direction, 3a thread class, 0.250 inches minimum thread length, flat chamfer head style

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.250 inches minimum
Fastener Length: 0.250 inches nominal
Head Style: flat chamfer
Head Diameter: 0.389 inches minimum and 0.414 inches maximum
Head Height: 0.180 inches nominal
Hole Diameter: 0.062 inches nominal
Internal Drive Style: slot
Nominal Thread Diameter: 0.250 inches
Hole Quantity: 2
Thread Quantity Per Inch: 28
Hardness Rating: 19.0 rockwell c minimum and 26.0 rockwell c maximum
Part Name Assigned By Controlling Agency: navy special project
Screw Material: steel
Screw Surface Treatment: cadmium
Head Hole Configuration Style: round longitudinal hole
Special Features: magnetically inspected to ams 2460
Thread Series Designator: unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-558-4551	No Name Available	01/01/1960

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
511D9	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-637-8037?

The FSCG of the NSN 5305-00-637-8037 is 5305

Does the NSN 5305-00-637-8037 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-637-8037 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 5305-00-637-8037 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-637-8037 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 5305-00-637-8037 was assigned to the Federal Catalog?

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