1U1B

View detailed technical data, stock status, and sourcing information for: 1U1B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-501-2399

Item Name Code

03263

Assigment Date

07/06/1974 (52 years ago)

2 setscrew hole quantity, 0.127 inches minimum and 0.129 inches maximum inside diameter, 0.188 inches minimum counterbore depth, 0.369 inches maximum distance from hole center to knob/skirt base, 0.485 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: 0.127 inches minimum and 0.129 inches maximum
Counterbore Diameter: 0.485 inches minimum
Counterbore Depth: 0.188 inches minimum
Setscrew Hole Quantity: 2
Distance From Hole Center To Knob/Skirt Base: 0.369 inches maximum
Overall Depth: 0.568 inches minimum
Width: 0.690 inches minimum and 0.730 inches maximum
Gripping Surface Condition: grip aid
Shaft Accommodation Style: counterbored
Length: 1.020 inches minimum and 1.070 inches maximum
Skirt Style: stepped
Reference Marking: indicator line
Attachment Method: setscrews
Overall Thickness: 0.752 inches minimum and 0.812 inches maximum
End Item Identification: mobile subscriber equipment (mse),launcher, grenade smoke, m250/m239
Material Transparency: opaque
Screw Drive Type: hexagon socket
Thread Quantity Per Inch: 40 screw hole
Nominal Thread Size: 0.112 inches screw hole
Skirt Outside Diameter: 1.000 inches maximum
Skirt Design: nondetachable
Pointer Design: nondetachable
Style Designator: pointer
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
1U1B	Knob
507-5WL-1M	Knob
70-5WL-1G	Knob
72B2MA/WL	Knob
KMS7K W/WHITE LINE 1L	Knob
MS91528-1U1B	Knob

FAQs

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

What is the FSCG of the NSN 5355-00-501-2399?

The FSCG of the NSN 5355-00-501-2399 is 5355

Does the NSN 5355-00-501-2399 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-501-2399 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 5355-00-501-2399 contain precious materials?

Precious metal content is unknown

Does NSN 5355-00-501-2399 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 5355-00-501-2399 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Sat, Jul 6, 1974