HT181-4-19

View detailed technical data, stock status, and sourcing information for: HT181-4-19
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-520-3838

Item Name Code

29294

Assigment Date

05/10/2004 (22 years ago)

right-hand thread direction, 1.640 inches minimum and 1.687 inches maximum fastener length, 0.469 inches nominal thread length, 3a thread class, flat countersunk 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: 0.469 inches nominal
Fastener Length: 1.640 inches minimum and 1.687 inches maximum
Head Style: flat countersunk
Head Diameter: 0.464 inches minimum and 0.506 inches maximum
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Point Length: 0.060 inches nominal
Point Style: flat
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.2500 inches
Grip Length: 1.177 inches minimum and 1.197 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 6400 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 32.0 microinches bearing surface of head
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: steel overall
Material Document And Classification: nas98 assn std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: nas672 fed std single treatment response overall
Thread Series Designator: unjf

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
HT181-4-19	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-520-3838?

The FSCG of the NSN 5305-01-520-3838 is 5305

Does the NSN 5305-01-520-3838 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-520-3838 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 5305-01-520-3838 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-520-3838 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 5305-01-520-3838 was assigned to the Federal Catalog?

It was assigned 22 years ago, on Mon, May 10, 2004