PB51238-1

View detailed technical data, stock status, and sourcing information for: PB51238-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-443-5980

Item Name Code

06657

Assigment Date

01/01/1960 (66 years ago)

3a thread class, flat chamfer head style, 0.438 inches nominal fastener length, right-hand thread direction, 0.219 inches minimum thread 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: 0.219 inches minimum
Fastener Length: 0.438 inches nominal
Head Style: flat chamfer
Head Diameter: 0.151 inches minimum and 0.155 inches maximum
Head Height: 0.058 inches minimum and 0.061 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.099 inches
Thread Quantity Per Inch: 56
Minimum Tensile Strength: 60000 pounds per square inch
Hardness Rating: 65.0 rockwell c maximum and 85.5 rockwell b maximum
Screw Material: copper alloy 360
Screw Material Document And Classification: ams 4610 1/2 hard assn std single material response
Screw Surface Treatment: nickel
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
PB51238-1	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-443-5980?

The FSCG of the NSN 5305-00-443-5980 is 5305

Does the NSN 5305-00-443-5980 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-00-443-5980 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 5305-00-443-5980 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-443-5980 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 5305-00-443-5980 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960