221A4MA

View detailed technical data, stock status, and sourcing information for: 221A4MA
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-619-4669

Item Name Code

03263

Assigment Date

01/01/1963 (63 years ago)

0.114 inches minimum counterbore depth, 2 setscrew hole quantity, 0.750 inches minimum counterbore diameter, 0.252 inches minimum and 0.254 inches maximum inside diameter, 0.260 inches maximum distance from hole center to knob/skirt base

Product Characteristics

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

Inside Diameter: 0.252 inches minimum and 0.254 inches maximum
Counterbore Diameter: 0.750 inches minimum
Counterbore Depth: 0.114 inches minimum
Setscrew Hole Quantity: 2
Distance From Hole Center To Knob/Skirt Base: 0.260 inches maximum
Overall Depth: 0.520 inches minimum
Gripping Surface Condition: grip aid
Shaft Accommodation Style: counterbored
Outside Diameter: 2.240 inches minimum and 2.280 inches maximum
Attachment Method: setscrews
Overall Thickness: 0.845 inches minimum and 0.905 inches maximum
Material Transparency: opaque
Screw Drive Type: hexagon socket
Thread Quantity Per Inch: 32 screw hole
Nominal Thread Size: 0.164 inches screw hole
Color: black, lusterless
Style Designator: round
Thread Series Designator: unc screw hole

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5355-00-559-2400	No Name Available	02/01/1991
5355-00-680-8525	No Name Available	12/25/1965

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
221A4MA	Knob
222728-501	Knob
225-1-2G	Knob
4147600-42	Knob
522-1-2M	Knob
5N2B	Knob
KMS22N2L	Knob
KMS22N2LNR	Knob
KR225-1-2G	Knob
MS91528-5N2B	Knob
SMB185778-2	Knob

FAQs

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

What is the FSCG of the NSN 5355-00-619-4669?

The FSCG of the NSN 5355-00-619-4669 is 5355

Does the NSN 5355-00-619-4669 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-619-4669 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 5355-00-619-4669 contain precious materials?

Precious metal content is unknown

Does NSN 5355-00-619-4669 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 5355-00-619-4669 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963