73991H-7D19
View detailed technical data, stock status, and sourcing information for: 73991H-7D19
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A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
3a thread class, 0.466 inches nominal thread length, right-hand thread direction, flat countersunk head style, 1.638 inches minimum and 1.685 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
- 0.466 inches nominal
- Fastener Length
- 1.638 inches minimum and 1.685 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.880 inches minimum and 0.890 inches maximum
- Grip Diameter
- 0.4360 inches minimum and 0.4370 inches maximum
- Shank Unthreaded Hole Diameter
- 0.106 inches minimum and 0.111 inches maximum first hole
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.438 inches
- Grip Length
- 1.178 inches minimum and 1.198 inches maximum
- Thread Quantity Per Inch
- 20
- Countersink Angle
- 100.0 degrees nominal
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 1.510 inches minimum and 1.567 inches maximum first hole
- Material
- steel overall
- Surface Treatment
- cadmium overall
- Surface Treatment Document And Classification
- mac ps13145,fscm 76301 mfr ref single treatment response overall
- Thread Series Designator
- unjf
- Specification/Standard Data
- 76301-st3-562 professional/industrial association standard
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 |
|---|---|
| 73991H-7D19 | Close Tolerance Screw |
| BM19031-7-19D | Close Tolerance Screw |
| HT309-7D19 | Close Tolerance Screw |
| HT8177-7D19 | Close Tolerance Screw |
| ST3M562-7D19 | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-013-9598?
Does the NSN 5305-01-013-9598 have a Schedule B code assigned?
Does NSN 5305-01-013-9598 require demilitarization?
Does NSN 5305-01-013-9598 contain precious materials?
Does NSN 5305-01-013-9598 contain hazardous materials?
When the NSN 5305-01-013-9598 was assigned to the Federal Catalog?
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