NAS1581C4T12X
View detailed technical data, stock status, and sourcing information for: NAS1581C4T12X
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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.
1.138 inches minimum and 1.168 inches maximum fastener length, right-hand thread direction, flat countersunk head style, 0.403 inches nominal thread 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
- 0.403 inches nominal
- Fastener Length
- 1.138 inches minimum and 1.168 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.3504 inches minimum and 0.3988 inches maximum
- Grip Diameter
- 0.2646 inches minimum and 0.2651 inches maximum
- Internal Drive Style
- offset cruciform (torque set)
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.74 inches minimum and 0.76 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 3145 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Part Name Assigned By Controlling Agency
- bolt,shear,100 deg flush reduced head,offset cruciform,offset cruciform-ribbed & dt slot,95 ksi fsu
- Material
- steel corrosion resisting overall
- Material Document And Classification
- cres 286 conform to ams5731,ams5732,ams5737 or ams5853 national std/spec single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- passivate iaw ams2700 method 1,type 2 or 8,class 1 national std/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 |
|---|---|
| NAS1581C4T12X | Close Tolerance Screw |
FAQs
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What is the FSCG of the NSN 5305-01-603-8747?
Does the NSN 5305-01-603-8747 have a Schedule B code assigned?
Does NSN 5305-01-603-8747 require demilitarization?
Does NSN 5305-01-603-8747 contain precious materials?
Does NSN 5305-01-603-8747 contain hazardous materials?
When the NSN 5305-01-603-8747 was assigned to the Federal Catalog?
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