HT4024L8-12M
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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.
flat countersunk head style, 1.516 inches minimum and 1.546 inches maximum fastener length, 3a thread class, 0.756 inches minimum and 0.806 inches maximum thread length, right-hand thread direction
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
- 0.756 inches minimum and 0.806 inches maximum
- Fastener Length
- 1.516 inches minimum and 1.546 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.688 inches minimum and 0.755 inches maximum
- Grip Diameter
- 0.4990 inches minimum and 0.4995 inches maximum
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.500 inches
- Grip Length
- 0.740 inches minimum and 0.760 inches maximum
- Thread Quantity Per Inch
- 20
- Minimum Tensile Strength
- 125000 pounds per square inch
- Countersink Angle
- 100.0 degrees nominal
- Special Features
- dry film lubricant p.s. 18021 cl 1
- Material
- steel overall
- Surface Treatment
- passivate overall
- Thread Series Designator
- unjf
- Specification/Standard Data
- 76301-st3-455 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 |
|---|---|
| 11907-8L12M | Close Tolerance Screw |
| HT4024L8-12M | Close Tolerance Screw |
| ST3M455-8L12M | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-049-4053?
Does the NSN 5305-01-049-4053 have a Schedule B code assigned?
Does NSN 5305-01-049-4053 require demilitarization?
Does NSN 5305-01-049-4053 contain precious materials?
Does NSN 5305-01-049-4053 contain hazardous materials?
When the NSN 5305-01-049-4053 was assigned to the Federal Catalog?
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