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Datasheet. NAS1131E18 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.
0.1380in. ⁓9/64"
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.
1.401in. ⁓1-13/32"
A measurement from the bottom to the top of the head,in distinction from depth.
0.055in. ⁓1/16"
The national stock number or the identification information of the end equipment for which the item is a part.
C135F hercules aircraft
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
screw, machine pan head close tol, short thd, offset cruciform
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.
160000 psi uts min. at room temperature heat treatment
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel corrosion resisting
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.
passivate
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjc
Answers.
Unjc
Steel corrosion resisting
32
0.1380 inches
Right-hand
3a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-540-8208 SCREW,CLOSE TOLERANCE
Used on c135f hercules aircraft. unjc thread series passivate surface treated 160000 psi uts min. at room temperature heat treatment screw, machine pan head close tol, short thd, offset cruciform 32 thread quantity per inch 0.1380" thread length right-hand 3a thread class
- NIIN
- 015408208
- NIIN Date
- 06/05/06
- Schedule B
- 7318152000
- Name Code
- 29294
- FIIG
- A003B0
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- No precious metals
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Major End Users Countries and entities
- - France
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NAS1131E18 / 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.
