091B4MA

View detailed technical data, stock status, and sourcing information for: 091B4MA
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-879-1945

Item Name Code

03263

Assigment Date

01/01/1962 (64 years ago)

2 setscrew hole quantity, 0.252 inches minimum and 0.254 inches maximum inside diameter, 0.484 inches maximum distance from hole center to knob/skirt base, 0.320 inches minimum counterbore depth, 0.640 inches minimum counterbore 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: 0.252 inches minimum and 0.254 inches maximum
Counterbore Diameter: 0.640 inches minimum
Counterbore Depth: 0.320 inches minimum
Setscrew Hole Quantity: 2
Distance From Hole Center To Knob/Skirt Base: 0.484 inches maximum
Overall Depth: 0.860 inches minimum and 0.910 inches maximum
Gripping Surface Condition: grip aid
Shaft Accommodation Style: counterbored
Outside Diameter: 0.890 inches minimum and 0.930 inches maximum
Skirt Style: stepped
Attachment Method: setscrews
Overall Thickness: 0.860 inches minimum and 0.910 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
Skirt Outside Diameter: 0.845 inches maximum
Skirt Design: nondetachable
Special Features: concentric
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Below is a list of NSNs that have been officially superseded by this NSN: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
5355-00-939-9281	No Name Available	11/29/1968
5355-01-030-2310	No Name Available	05/01/1985

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
091B4MA	Knob
509-2-2M-C	Knob
90-2CB2G	Knob
9L2RSC	Knob
MS91528-2D2BC	Knob

FAQs

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

What is the FSCG of the NSN 5355-00-879-1945?

The FSCG of the NSN 5355-00-879-1945 is 5355

Does the NSN 5355-00-879-1945 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-879-1945 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 5355-00-879-1945 contain precious materials?

Item does not contain precious metal.

Does NSN 5355-00-879-1945 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 5355-00-879-1945 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962