HT52N21

View detailed technical data, stock status, and sourcing information for: HT52N21
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-227-1424

Item Name Code

22846

Assigment Date

05/17/1973 (53 years ago)

flat countersunk head style, 0.506 inches minimum and 0.573 inches maximum thread length, 1.828 inches minimum and 1.875 inches maximum fastener length, right-hand thread direction, 3a thread class

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: 0.506 inches minimum and 0.573 inches maximum
Fastener Length: 1.828 inches minimum and 1.875 inches maximum
Head Style: flat countersunk
Head Diameter: 0.629 inches minimum and 0.634 inches maximum
Shoulder Diameter: 0.342 inches minimum and 0.343 inches maximum first shoulder
Shoulder Length: 1.180 inches minimum and 1.202 inches maximum first shoulder
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.312 inches
Thread Quantity Per Inch: 24
Hardness Rating: 24.0 rockwell c minimum and 44.0 rockwell c maximum overall
Countersink Angle: 100.0 degrees nominal
Shoulder Shape: round first shoulder
Part Name Assigned By Controlling Agency: navy special project
Material: iron alloy 660 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
3M218-5-21	Shoulder Screw
55979-5-21	Shoulder Screw
HT1030-5-21	Shoulder Screw
HT52N21	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-00-227-1424?

The FSCG of the NSN 5305-00-227-1424 is 5305

Does the NSN 5305-00-227-1424 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-227-1424 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 5305-00-227-1424 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-227-1424 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 5305-00-227-1424 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Thu, May 17, 1973