HT123-4-5

View detailed technical data, stock status, and sourcing information for: HT123-4-5
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-197-1309

Item Name Code

29294

Assigment Date

12/18/1984 (41 years ago)

0.443 inches minimum and 0.510 inches maximum thread length, right-hand thread direction, 3a thread class, 0.765 inches minimum and 0.812 inches maximum fastener length, 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: 0.443 inches minimum and 0.510 inches maximum
Fastener Length: 0.765 inches minimum and 0.812 inches maximum
Head Style: flat countersunk
Head Diameter: 0.502 inches minimum and 0.507 inches maximum
Grip Diameter: 0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.302 inches minimum and 0.322 inches maximum
Thread Quantity Per Inch: 28
Hardness Rating: 24.0 rockwell c minimum and 44.0 rockwell c maximum overall
Countersink Angle: 100.0 degrees nominal
Material: iron alloy 660 overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec 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
3M123-4-5	Close Tolerance Screw
54291-4-5	Close Tolerance Screw
E128-4-5	Close Tolerance Screw
HT1029A-4-5	Close Tolerance Screw
HT1029A4-5	Close Tolerance Screw
HT123-4-5	Close Tolerance Screw
HT4N-5	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-197-1309?

The FSCG of the NSN 5305-01-197-1309 is 5305

Does the NSN 5305-01-197-1309 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-197-1309 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 5305-01-197-1309 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-197-1309 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 5305-01-197-1309 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Tue, Dec 18, 1984