HT239PB4-15

View detailed technical data, stock status, and sourcing information for: HT239PB4-15
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-450-8023

Item Name Code

29294

Assigment Date

01/02/1970 (56 years ago)

1.238 inches minimum and 1.254 inches maximum fastener length, flat countersunk head style, 0.290 inches minimum and 0.357 inches maximum thread length, 3a thread class, right-hand thread direction

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: 0.290 inches minimum and 0.357 inches maximum
Fastener Length: 1.238 inches minimum and 1.254 inches maximum
Head Style: flat countersunk
Head Diameter: 0.390 inches minimum and 0.395 inches maximum
Grip Diameter: 0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.928 inches minimum and 0.948 inches maximum
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 180000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
Countersink Angle: 100.0 degrees nominal
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Material: steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
Material Document And Classification: mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 2 fed spec single treatment response overall
Thread Series Designator: unjf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-01-043-8058	No Name Available	10/30/2002

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
106606T4-15	Close Tolerance Screw
106750-4-15	Close Tolerance Screw
A147-4-15	Close Tolerance Screw
BM19025-4-15	Close Tolerance Screw
GB510L4-15	Close Tolerance Screw
HT184-4-15	Close Tolerance Screw
HT239PB4-15	Close Tolerance Screw
HT8043-4-15	Close Tolerance Screw
STSBA002-4-15	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-450-8023?

The FSCG of the NSN 5305-00-450-8023 is 5305

Does the NSN 5305-00-450-8023 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-450-8023 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 5305-00-450-8023 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-450-8023 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 5305-00-450-8023 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Fri, Jan 2, 1970