121491-16-48
View detailed technical data, stock status, and sourcing information for: 121491-16-48
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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.
right-hand thread direction, hexagon head style, 0.885 inches minimum and 1.196 inches maximum thread length, 3a thread class, 4.208 inches minimum and 4.244 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
- 0.885 inches minimum and 1.196 inches maximum
- Fastener Length
- 4.208 inches minimum and 4.244 inches maximum
- Head Style
- hexagon
- Head Height
- 0.501 inches minimum and 0.516 inches maximum
- Width Between Flats
- 1.427 inches minimum and 1.440 inches maximum
- Locking Feature
- detent ring grip
- Grip Diameter
- 0.9982 inches minimum and 0.9991 inches maximum
- Shank Unthreaded Hole Diameter
- 0.141 inches minimum and 0.151 inches maximum first hole
- Nominal Thread Diameter
- 1.000 inches
- Grip Length
- 2.976 inches minimum and 2.992 inches maximum
- Thread Quantity Per Inch
- 12
- Minimum Tensile Strength
- 74000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 41.0 rockwell c maximum overall
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 4.051 inches minimum and 4.097 inches maximum first hole
- Surface Finish
- 63.0 microinches bearing surface of head
- Surface Finish
- 63.0 microinches grip
- Material
- steel comp e4340 overall
- Material Document And Classification
- mil-s-5000 mil spec single material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416 ty 2 cl 2 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 |
|---|---|
| 121491-16-48 | Close Tolerance Bolt |
FAQs
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What is the FSCG of the NSN 5306-01-167-2404?
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Does NSN 5306-01-167-2404 require demilitarization?
Does NSN 5306-01-167-2404 contain precious materials?
Does NSN 5306-01-167-2404 contain hazardous materials?
When the NSN 5306-01-167-2404 was assigned to the Federal Catalog?
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