NAS1581F3T12X
View detailed technical data, stock status, and sourcing information for: NAS1581F3T12X
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An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
right-hand thread direction, 1.098 inches minimum and 1.128 inches maximum fastener length, 0.363 inches nominal 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
- 0.363 inches nominal
- Fastener Length
- 1.098 inches minimum and 1.128 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.2578 inches minimum and 0.3047 inches maximum
- Shoulder Diameter
- 0.2041 inches minimum and 0.2051 inches maximum first shoulder
- Shoulder Length
- 0.697 inches minimum and 0.717 inches maximum first shoulder
- Internal Drive Style
- offset cruciform (torque set)
- Nominal Thread Diameter
- 0.190 inches
- Thread Quantity Per Inch
- 32
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Shoulder Shape
- round first shoulder
- Material
- steel comp 4140 or steel comp e4340 or steel comp 8740 overall
- Material Document And Classification
- mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-6049 mil spec 3rd 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
- Specification/Standard Data
- 80205-nas1581 professional/industrial association standard
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 |
|---|---|
| NAS1581F3T12X | Shoulder Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-398-1270?
Does the NSN 5305-01-398-1270 have a Schedule B code assigned?
Does NSN 5305-01-398-1270 require demilitarization?
Does NSN 5305-01-398-1270 contain precious materials?
Does NSN 5305-01-398-1270 contain hazardous materials?
When the NSN 5305-01-398-1270 was assigned to the Federal Catalog?
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