MS16998-44
View detailed technical data, stock status, and sourcing information for: MS16998-44
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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.
flat chamfer head style, 0.425 inches nominal thread length, right-hand thread direction, 3a thread class, 0.785 inches minimum and 0.815 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
- 0.425 inches nominal
- Fastener Length
- 0.785 inches minimum and 0.815 inches maximum
- Head Style
- flat chamfer
- Head Diameter
- 0.365 inches minimum and 0.375 inches maximum
- Head Height
- 0.244 inches minimum and 0.250 inches maximum
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.187 inches minimum and 0.190 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 45.0 rockwell c maximum overall
- Minimum Yield Strength
- 130000 pounds per square inch
- Material
- steel overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 ty 2 cl 3 fed spec single treatment response overall
- Thread Series Designator
- unf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-020-5906 | No Name Available | 01/01/1992 |
| 5305-00-207-1736 | No Name Available | 02/01/1984 |
| 5305-00-282-4397 | No Name Available | 12/01/1982 |
| 5305-00-551-0141 | No Name Available | 12/17/1998 |
| 5305-00-724-2377 | No Name Available | 09/01/1984 |
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 |
|---|---|
| 3M991-4-6 | Socket Head Cap Screw |
| 5305009836661 | Socket Head Cap Screw |
| 5305PL0946181 | Socket Head Cap Screw |
| 870572-00 | Socket Head Cap Screw |
| AJA01-C06 | Socket Head Cap Screw |
| MS16998-44 | Socket Head Cap Screw |
| XX002-0279 | Socket Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-983-6661?
Does the NSN 5305-00-983-6661 have a Schedule B code assigned?
Does NSN 5305-00-983-6661 require demilitarization?
Does NSN 5305-00-983-6661 contain precious materials?
Does NSN 5305-00-983-6661 contain hazardous materials?
When the NSN 5305-00-983-6661 was assigned to the Federal Catalog?
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Pricing
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