ST3M747-4D18
View detailed technical data, stock status, and sourcing information for: ST3M747-4D18
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An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
right-hand thread direction, spline drive shear head head style, 3a thread class, 0.300 inches minimum and 0.438 inches maximum thread length, 1.506 inches minimum and 1.553 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
- 0.300 inches minimum and 0.438 inches maximum
- Fastener Length
- 1.506 inches minimum and 1.553 inches maximum
- Head Style
- spline drive shear head
- Head Height
- 0.164 inches nominal
- Grip Diameter
- 0.2490 inches minimum and 0.2495 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum and 0.081 inches maximum first hole
- Head Minor Diameter
- 0.448 inches minimum and 0.455 inches maximum
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.115 inches minimum and 1.135 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 125000 pounds per square inch
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 1.385 inches minimum and 1.442 inches maximum first hole
- Material
- steel comp xm-13 overall
- Material Document And Classification
- ams5629 assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Thread Series Designator
- unjf
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 |
|---|---|
| 122896-4D18 | Close Tolerance Bolt |
| AIC688-4D18 | Close Tolerance Bolt |
| MB155-4D18 | Close Tolerance Bolt |
| PBF 1266-4D18 | Close Tolerance Bolt |
| S397-4D18 | Close Tolerance Bolt |
| ST3M747-4D18 | Close Tolerance Bolt |
| VCG0002-4D18 | Close Tolerance Bolt |
| VS3191-4D18 | Close Tolerance Bolt |
FAQs
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What is the FSCG of the NSN 5306-01-272-8324?
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Does NSN 5306-01-272-8324 require demilitarization?
Does NSN 5306-01-272-8324 contain precious materials?
Does NSN 5306-01-272-8324 contain hazardous materials?
When the NSN 5306-01-272-8324 was assigned to the Federal Catalog?
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