0121A4MA
View detailed technical data, stock status, and sourcing information for: 0121A4MA
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An open coiled spring, wound in various forms and from different shapes and types of materials and finished at the ends, designed to provide resistance to compression forces. Excludes:springs designed for thermal actuation (springs in which the torsion forces are designed to be counteracted by changes in temperature) and spring, reinforcing, hose.
0.114 inches minimum counterbore depth, 0.252 inches minimum and 0.254 inches maximum inside diameter, 0.750 inches minimum counterbore diameter, 0.260 inches maximum distance from hole center to knob/skirt base, 2 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
- 0.252 inches minimum and 0.254 inches maximum
- Counterbore Diameter
- 0.750 inches minimum
- Counterbore Depth
- 0.114 inches minimum
- Setscrew Hole Quantity
- 2
- Distance From Hole Center To Knob/Skirt Base
- 0.260 inches maximum
- Overall Depth
- 0.515 inches minimum and 0.545 inches maximum
- Gripping Surface Condition
- grip aid
- Shaft Accommodation Style
- counterbored
- Outside Diameter
- 1.240 inches minimum and 1.280 inches maximum
- Attachment Method
- setscrews
- Overall Thickness
- 0.515 inches minimum and 0.545 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
- 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5355-00-926-5218 | No Name Available | 01/20/1972 |
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 |
|---|---|
| 0121A4MA | Knob |
| 125-1CB2G | Knob |
| 222731-301 | Knob |
| 3N2BC | Knob |
| 512-1-2M-C | Knob |
| KMS12N2LC | Knob |
| KMS12N2LCNR | Knob |
| KMS13N2LCNR | Knob |
| MS91528-3N2BC | Knob |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5355-00-728-9481?
Does the NSN 5355-00-728-9481 have a Schedule B code assigned?
Does NSN 5355-00-728-9481 require demilitarization?
Does NSN 5355-00-728-9481 contain precious materials?
Does NSN 5355-00-728-9481 contain hazardous materials?
When the NSN 5355-00-728-9481 was assigned to the Federal Catalog?
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Pricing
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