P320A421

View detailed technical data, stock status, and sourcing information for: P320A421
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-668-1334

Item Name Code

03263

Assigment Date

01/01/1963 (63 years ago)

0.750 inches nominal width, 0.251 inches minimum and 0.254 inches maximum inside diameter, 0.500 inches nominal overall depth, 0.188 inches nominal distance from hole center to knob/skirt base, 1 setscrew hole quantity

Product Characteristics

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

Inside Diameter: 0.251 inches minimum and 0.254 inches maximum
Setscrew Hole Quantity: 1
Distance From Hole Center To Knob/Skirt Base: 0.188 inches nominal
Overall Depth: 0.500 inches nominal
Width: 0.750 inches nominal
Gripping Surface Condition: grip aid
Shaft Accommodation Style: round
Length: 1.250 inches nominal
Reference Marking: single line
Attachment Method: setscrews
Overall Thickness: 0.625 inches nominal
Screw Drive Type: slot
Thread Quantity Per Inch: 32 screw hole
Nominal Thread Size: 0.164 inches screw hole
Pointer Design: nondetachable
Style Designator: bar with single pointer
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Below is a list of NSNs that have been officially superseded by this NSN: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
5355-00-085-0858	No Name Available	12/08/1967
5355-00-162-9095	No Name Available	12/07/1970
5355-00-284-4578	No Name Available	02/27/1970
5355-00-667-8957	No Name Available	02/01/1985
5355-00-667-9069	Knob	07/01/2025

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
4200079-001	Knob
4285G1	Knob
604285	Knob
HRPP	Knob
KNB17	Knob
P320A421	Knob
SG2651	Knob
W211483-2	Knob

FAQs

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

What is the FSCG of the NSN 5355-00-668-1334?

The FSCG of the NSN 5355-00-668-1334 is 5355

Does the NSN 5355-00-668-1334 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-668-1334 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 5355-00-668-1334 contain precious materials?

Item does not contain precious metal.

Does NSN 5355-00-668-1334 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 5355-00-668-1334 was assigned to the Federal Catalog?

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