NAS1581C4R12
View detailed technical data, stock status, and sourcing information for: NAS1581C4R12
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A terminal designed to be affixed, usually at one end, to a post, stud, chassis, or the like for mounting. It has provisions for attachment of wire(s) or similar electrical conductor(s) in order to establish an electrical connection and could require the use of tool(s) for attachment of wire. For post like terminals, see terminal stud. Excludes:clip, electrical; terminal, quick disconnect and terminal feedthru.
1.138 inches minimum and 1.168 inches maximum fastener length, right-hand thread direction, 0.378 inches minimum and 0.428 inches maximum thread length, 3a thread class, flat countersunk head style
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
- 0.378 inches minimum and 0.428 inches maximum
- Fastener Length
- 1.138 inches minimum and 1.168 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.350 inches minimum and 0.398 inches maximum
- Grip Diameter
- 0.2485 inches minimum and 0.2495 inches maximum
- Internal Drive Style
- offset cruciform (torque set)
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.740 inches minimum and 0.760 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Surface Finish
- 32.0 microinches grip
- Surface Finish
- 32.0 microinches threads
- Special Features
- internal drive ribbed
- Material
- iron alloy 660 overall
- Material Document And Classification
- ams5731 assn std single material response or ams5732 assn std single material response or ams5737 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
- Specification/Standard Data
- 80205-nas1581 professional/industrial association standard
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-01-284-2487 | No Name Available | 03/01/1998 |
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 |
|---|---|
| NAS1581C4R12 | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-219-3460?
Does the NSN 5305-01-219-3460 have a Schedule B code assigned?
Does NSN 5305-01-219-3460 require demilitarization?
Does NSN 5305-01-219-3460 contain precious materials?
Does NSN 5305-01-219-3460 contain hazardous materials?
When the NSN 5305-01-219-3460 was assigned to the Federal Catalog?
Professional Distribution
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Pricing
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