TT377-A1B1

View detailed technical data, stock status, and sourcing information for: TT377-A1B1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-01-244-4573

Item Name Code

03263

Assigment Date

11/14/1986 (39 years ago)

A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.

0.260 inches nominal inside diameter, 0.250 inches nominal distance from hole center to knob/skirt base, 2 setscrew hole quantity, 0.500 inches maximum overall depth, smooth gripping surface condition

Product Characteristics

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

Inside Diameter: 0.260 inches nominal
Setscrew Hole Quantity: 2
Distance From Hole Center To Knob/Skirt Base: 0.250 inches nominal
Overall Depth: 0.500 inches maximum
Gripping Surface Condition: smooth
Shaft Accommodation Style: round
Outside Diameter: 0.620 inches nominal
Attachment Method: setscrews
Overall Thickness: 0.560 inches nominal
Material Transparency: clear
Screw Drive Type: hexagon socket
Thread Quantity Per Inch: 40 screw hole
Nominal Thread Size: 0.112 inches screw hole
Color: black
Material: plastic
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
4020-0041	Knob
TT377-A1B1	Knob
TT377-A3B1	Knob

FAQs

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

What is the FSCG of the NSN 5355-01-244-4573?

The FSCG of the NSN 5355-01-244-4573 is 5355

Does the NSN 5355-01-244-4573 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-01-244-4573 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 5355-01-244-4573 contain precious materials?

Item does not contain precious metal.

Does NSN 5355-01-244-4573 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 5355-01-244-4573 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Nov 14, 1986