HT409A4-8

View detailed technical data, stock status, and sourcing information for: HT409A4-8
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-433-9163

Item Name Code

22846

Assigment Date

05/17/1974 (52 years ago)

3a thread class, flat countersunk head style, 0.442 inches minimum and 0.509 inches maximum thread length, right-hand thread direction, 0.952 inches minimum and 0.999 inches maximum 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: 0.442 inches minimum and 0.509 inches maximum
Fastener Length: 0.952 inches minimum and 0.999 inches maximum
Head Style: flat countersunk
Head Diameter: 0.502 inches minimum and 0.507 inches maximum
Shoulder Diameter: 0.264 inches minimum and 0.265 inches maximum first shoulder
Shoulder Length: 0.389 inches minimum and 0.411 inches maximum first shoulder
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.250 inches
Thread Quantity Per Inch: 28
Countersink Angle: 100.0 degrees nominal
Shoulder Shape: round first shoulder
Special Features: furnished with 1 o-ring
Material: steel overall
Material Document And Classification: 3-52,fscm 76301 mfr ref single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: 3-52,fscm 76301 mfr ref single treatment response overall
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
3M50-4-8	Shoulder Screw
54267-4-8	Shoulder Screw
HT409A4-8	Shoulder Screw
HT41UA8	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-00-433-9163?

The FSCG of the NSN 5305-00-433-9163 is 5305

Does the NSN 5305-00-433-9163 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-433-9163 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 5305-00-433-9163 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-433-9163 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 5305-00-433-9163 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Fri, May 17, 1974