HT8137-5-7

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-324-8490

Item Name Code

29294

Assigment Date

11/28/1973 (52 years ago)

3a thread class, right-hand thread direction, flat countersunk undercut head style, 0.504 inches minimum and 0.571 inches maximum thread length, 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: 0.504 inches minimum and 0.571 inches maximum
Fastener Length: 0.952 inches minimum and 0.999 inches maximum
Head Style: flat countersunk undercut
Head Diameter: 0.628 inches minimum and 0.633 inches maximum
Head Height: 0.087 inches minimum and 0.089 inches maximum
Grip Diameter: 0.3115 inches minimum and 0.3120 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.312 inches
Grip Length: 0.428 inches minimum and 0.448 inches maximum
Thread Quantity Per Inch: 24
Countersink Angle: 100.0 degrees minimum
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: titanium alloy uns r54520 overall
Material Document And Classification: nas 621,6al-4v assn std single material 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
110179-5-7	Close Tolerance Screw
BM33024V5-7	Close Tolerance Screw
HT271-5-7	Close Tolerance Screw
HT8137-5-7	Close Tolerance Screw
ST3M430V5-7D	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-324-8490?

The FSCG of the NSN 5305-00-324-8490 is 5305

Does the NSN 5305-00-324-8490 have a Schedule B code assigned?

Yes, the Schedule B code is 8109900000

Does NSN 5305-00-324-8490 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 5305-00-324-8490 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-324-8490 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 5305-00-324-8490 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Wed, Nov 28, 1973