MS21385-01

View detailed technical data, stock status, and sourcing information for: MS21385-01
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-01-052-3417

Item Name Code

03263

Assigment Date

12/13/1977 (48 years ago)

A tubular shaped metallic item designed to provide a replaceable wearing surface for a centrifugal pump shaft. See also bearing, sleeve; bushing, sleeve; and spacer, sleeve.

0.160 inches nominal counterbore depth, 0.380 inches nominal counterbore diameter, 0.310 inches nominal distance from hole center to knob/skirt base, 2 setscrew hole quantity, 0.128 inches nominal inside diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Inside Diameter: 0.128 inches nominal
Counterbore Diameter: 0.380 inches nominal
Counterbore Depth: 0.160 inches nominal
Setscrew Hole Quantity: 2
Distance From Hole Center To Knob/Skirt Base: 0.310 inches nominal
Overall Depth: 0.620 inches nominal
Gripping Surface Condition: smooth
Shaft Accommodation Style: counterbored
Outside Diameter: 0.750 inches nominal
Reference Marking: arrow
Attachment Method: setscrews
Overall Thickness: 0.880 inches nominal
Screw Drive Type: hexagon socket
Thread Quantity Per Inch: 40 screw hole
Nominal Thread Size: 0.112 inches screw hole
Special Features: illuminated knob; white arrow
Style Designator: crown
Thread Series Designator: unc screw hole

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
MS21385-01	Knob

FAQs

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

What is the FSCG of the NSN 5355-01-052-3417?

The FSCG of the NSN 5355-01-052-3417 is 5355

Does the NSN 5355-01-052-3417 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-01-052-3417 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 5355-01-052-3417 contain precious materials?

Item does not contain precious metal.

Does NSN 5355-01-052-3417 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 5355-01-052-3417 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Tue, Dec 13, 1977