MS16997-20
View detailed technical data, stock status, and sourcing information for: MS16997-20
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An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.
right-hand thread direction, 0.500 inches maximum thread length, flat chamfer head style, 3a thread class, 0.469 inches minimum and 0.500 inches maximum fastener length
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Direction
- right-hand
- Thread Length
- 0.500 inches maximum
- Fastener Length
- 0.469 inches minimum and 0.500 inches maximum
- Head Style
- flat chamfer
- Head Diameter
- 0.218 inches minimum and 0.226 inches maximum
- Head Height
- 0.134 inches minimum and 0.138 inches maximum
- Width Between Flats
- 0.1094 inches minimum and 0.1111 inches maximum
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 160000 pounds per square inch
- Screw Material
- steel uns k03104
- Screw Material Document And Classification
- astm a574 assn std single material response
- Screw Surface Treatment
- cadmium and chromate
- Screw Surface Treatment Document And Classification
- qq-p-416 ty 2 cl 3 fed spec all treatment responses or mil-c-81562 ty 2 cl 6 mil spec all treatment responses
- Thread Series Designator
- unc
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-242-1251 | No Name Available | 02/01/1998 |
| 5305-00-652-0412 | No Name Available | 07/28/1969 |
| 5305-00-702-8282 | No Name Available | 10/01/1982 |
| 5305-00-835-3056 | No Name Available | 01/01/1984 |
| 5305-00-843-4932 | No Name Available | 07/25/1967 |
| 5305-00-965-7422 | No Name Available | 11/01/1986 |
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 |
|---|---|
| 0716663 | Machine Screw |
| 200090-8 | Machine Screw |
| 324-2610-000 | Machine Screw |
| 5305009789348 | Machine Screw |
| 61C58 | Machine Screw |
| 61X159 | Machine Screw |
| MS 16997-20 | Machine Screw |
| MS16997-20 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-978-9348?
Does the NSN 5305-00-978-9348 have a Schedule B code assigned?
Does NSN 5305-00-978-9348 require demilitarization?
Does NSN 5305-00-978-9348 contain precious materials?
Does NSN 5305-00-978-9348 contain hazardous materials?
When the NSN 5305-00-978-9348 was assigned to the Federal Catalog?
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Pricing
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