121BDMA
View detailed technical data, stock status, and sourcing information for: 121BDMA
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An item designed to transmit manual, rotary or linear motion to other devices. May include detachable or nondetachable stud (shaft), pointer, or skirt. It may have reference markings in the form of dots, arrows, hairlines, and/or symbols which may be used in conjunction with a calibrated panel, vernier indicator, and the like to indicate the position or motion of items. For items having spokes or simulated spokes radiating from near the center to near the outside rim of the item and relatively thin round disk-shaped items 3 inches (76.2 mm) in diameter or over, see handwheel. For items calibrated in units or series of divisions to denote relative positioning of devices see dial, control. Excludes:doorknob; and handle (as modified).
grip aid gripping surface condition, 2 setscrew hole quantity, 0.252 inches minimum and 0.254 inches maximum inside diameter, 0.427 inches maximum distance from hole center to knob/skirt base, 0.605 inches minimum overall depth
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
- Setscrew Hole Quantity
- 2
- Distance From Hole Center To Knob/Skirt Base
- 0.427 inches maximum
- Overall Depth
- 0.605 inches minimum
- Gripping Surface Condition
- grip aid
- Shaft Accommodation Style
- flatted one side
- Outside Diameter
- 1.240 inches minimum and 1.280 inches maximum
- Skirt Style
- stepped
- Attachment Method
- setscrews
- Inside Width
- 0.222 inches minimum and 0.227 inches maximum
- Overall Thickness
- 0.820 inches minimum and 0.880 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
- 1.185 inches maximum
- Skirt Design
- nondetachable
- Special Features
- shaft accommodation hole counterbore 0.750 in min dia,0.250 in. min depth
- Color
- black, lusterless
- Style Designator
- round
- 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 |
|---|---|
| 121BDMA | Knob |
| 125-2-2DG | Knob |
| 3D4B | Knob |
| 512-2-4M | Knob |
| MS91528-3D4B | Knob |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5355-00-070-2101?
Does the NSN 5355-00-070-2101 have a Schedule B code assigned?
Does NSN 5355-00-070-2101 require demilitarization?
Does NSN 5355-00-070-2101 contain precious materials?
Does NSN 5355-00-070-2101 contain hazardous materials?
When the NSN 5355-00-070-2101 was assigned to the Federal Catalog?
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