HT408-4-9

View detailed technical data, stock status, and sourcing information for: HT408-4-9
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-957-5708

Item Name Code

06657

Assigment Date

01/01/1962 (64 years ago)

right-hand thread direction, flat countersunk undercut head style, 3a thread class, 0.469 inches minimum thread length, 1.031 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: 3a
Thread Direction: right-hand
Thread Length: 0.469 inches minimum
Fastener Length: 1.031 inches nominal
Head Style: flat countersunk undercut
Head Diameter: 0.502 inches minimum and 0.507 inches maximum
Head Height: 0.071 inches minimum and 0.073 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Countersink Angle: 100.0 degrees nominal
Screw Material: steel
Screw Surface Treatment: cadmium
Thread Series Designator: unf

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
3M48-4-9	Machine Screw
54263-4-9	Machine Screw
HT408-4-9	Machine Screw
HT4U-9	Machine Screw
HTS489-4-9	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-957-5708?

The FSCG of the NSN 5305-00-957-5708 is 5305

Does the NSN 5305-00-957-5708 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-957-5708 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 5305-00-957-5708 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-957-5708 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 5305-00-957-5708 was assigned to the Federal Catalog?

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