21260-29
View detailed technical data, stock status, and sourcing information for: 21260-29
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An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes:setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.
bevel-conical head style, 1.188 inches nominal fastener length, 0.562 inches nominal thread length, right-hand thread direction, 3a thread class
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
- 0.562 inches nominal
- Fastener Length
- 1.188 inches nominal
- Head Style
- bevel-conical
- Head Diameter
- 0.521 inches minimum and 0.531 inches maximum
- Head Height
- 0.312 inches nominal
- Hole Diameter
- 0.055 inches nominal
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.312 inches
- Width Across Flats
- 0.219 inches minimum and 0.221 inches maximum
- Hole Quantity
- 4
- Hole Type
- drilled
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
- Hole Configuration Style
- round longitudinal hole
- Material
- steel 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
- unf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5306-00-297-4266 | No Name Available | 01/01/1961 |
| 5306-00-638-3154 | No Name Available | 11/01/1991 |
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 |
|---|---|
| 02-0067-5-19 | Internal Wrenching Bolt |
| 21260-29 | Internal Wrenching Bolt |
| 21808 FIND 24 | Internal Wrenching Bolt |
| MS20005H10 | Internal Wrenching Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-00-639-1792?
Does the NSN 5306-00-639-1792 have a Schedule B code assigned?
Does NSN 5306-00-639-1792 require demilitarization?
Does NSN 5306-00-639-1792 contain precious materials?
Does NSN 5306-00-639-1792 contain hazardous materials?
When the NSN 5306-00-639-1792 was assigned to the Federal Catalog?
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