5305-00-121-7972
Find complete technical information, availability, and procurement data for: 5305-00-121-7972
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An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.
right-hand thread direction, flat chamfer head style, 0.875 inches minimum thread length, 1.235 inches minimum and 1.281 inches maximum fastener length, 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
- 0.875 inches minimum
- Fastener Length
- 1.235 inches minimum and 1.281 inches maximum
- Head Style
- flat chamfer
- Head Diameter
- 0.303 inches minimum and 0.312 inches maximum
- Head Height
- 0.185 inches minimum and 0.190 inches maximum
- Locking Feature
- strip threads
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.190 inches
- Width Across Flats
- 0.156 inches minimum and 0.159 inches maximum
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 80000 pounds per square inch
- Hardness Rating
- 80.0 rockwell b minimum overall
- Minimum Yield Strength
- 30000 pounds per square inch
- Surface Finish
- 63.0 microinches threads
- Material
- steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 overall
- Material Document And Classification
- qq-p-35 fed spec single material response overall
- Surface Treatment
- passivate overall
- Thread Series Designator
- unf
- Nondefinitive Spec/Std Data
- 6 type
- Departure From Cited Designator
- as modified by self-locking feature
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-907-8490 | No Name Available | 07/23/1972 |
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 |
|---|---|
| LK21295-63 | Socket Head Cap Screw |
| MS21295-63 | Socket Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-121-7972?
Does the NSN 5305-00-121-7972 have a Schedule B code assigned?
Does NSN 5305-00-121-7972 require demilitarization?
Does NSN 5305-00-121-7972 contain precious materials?
Does NSN 5305-00-121-7972 contain hazardous materials?
When the NSN 5305-00-121-7972 was assigned to the Federal Catalog?
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