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Datasheet. NAS1581F4T9X specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.
RIGHT-Hand
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.403in. ⁓13/32"
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.
0.9655in. ⁓31/32"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
flat countersunk
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.3504in. and 0.3988in.
The length of a straight line which passes through the center of the grip,and terminates at the circumference.
0.2641in. and 0.2651in.
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
offset cruciform (torque set)
The national stock number or the identification information of the end equipment for which the item is a part.
F16
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.25in. ⁓1/4"
A measurement of the longest dimension of the grip,in distinction from width.
0.5625in.
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
The included angle of the countersink.
99.0 degrees and 101.0 degrees
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
bolt, shear, 100 degrees flush reduced head, offset cruciform, 95 ksi fsu.
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
max two incomplete threads. heat treat to 160-180Ksi ftu. replacement oversized repair bolt. grip is 0.156 versized. diameter is 0.2646 min to 0.2651 max.
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 4140 or steel comp 4340 or steel comp 8740
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
cadmium
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjf
Answers.
Unjf
Steel comp 4140 or steel comp 4340 or steel comp 8740
28
0.5625 inches
Flat countersunk
0.403 inches
Right-hand
3a
Schedule B number: 7318152000
nmfc 096640
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-628-7407 SCREW,CLOSE TOLERANCE
Used on F16. unjf thread series cadmium surface treated max two incomplete threads. heat treat to 160-180ksi ftu. replacement oversized repair bolt. grip is 0.156 versized. diameter is 0.2646 min to 0.2651 max. bolt, shear, 100 degrees flush reduced head, offset cruciform, 95 ksi fsu. 28 thread quantity per inch 0.5625" grip length flat countersunk head style 0.403" thread length right-hand 3a thread class
- NIIN
- 016287407
- NIIN Date
- 06/09/14
- Schedule B
- 7318152000
- Name Code
- 29294
- FIIG
- A003B0
- Item Weight
- 0.000lbs
- Item Dimensions
- DEMIL / ITAR
- Uncontrolled item (Code )
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- --
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Major End Users Countries and entities
- - Department of The Air Force
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Request a Quote »Shipping Information
- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- 70.0
- LCL (less than a car load rating)
- Unknown
- Special Cargo
- No special type of cargo code applicable
- Air Freight (Minimum cargo door size required)
- Shipment is not a consolidation and does not exceed 84 inches in any dimension.
- Customs Requirement Classification
- Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater
- Commodity (for shipments via water)
- Metal hardware
- NMFC (national motor freight code)
- 096640 SCREWS, IRON OR STEEL
- UFC (universal freight code)
- 50600
Similar by Design Other screws with similar characteristics
Nothing similar to this part number was found in our inventory
NAS1581F4T9X / Screw,close toleranceWhat is the formal definition of this item?
A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. the head is designed to be held or driven with an inserted driver. it is not designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads.
