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Datasheet. NA0038-100056 specification
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.
14.5 mm
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.
70.5 mm
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.
20.0 mm
The length of a straight line which passes through the center of the grip,and terminates at the circumference.
9.9 mm and 10.0 mm
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
offset cruciform (torque set)
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
10.0 mm
A measurement of the longest dimension of the grip,in distinction from width.
55.8 mm and 56.2 mm
A measurement of distance between corresponding points on two adjacent threads measured parallel to the thread axis,expressed in millimeters.
1.2
A numeric-alpha designator indicating established pitch and crest diameter tolerance positions and grades of an external thread.
4H6H
The included angle of the countersink.
95.0 degrees and 105.0 degrees
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 4340 or steel comp 8740
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
mj
Answers.
Mj
Steel comp 4340 or steel comp 8740
55.8 millimeters minimum and 56.2 millimeters maximum
Flat countersunk
14.5 millimeters
Right-hand
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-581-1205 SCREW,CLOSE TOLERANCE
mj thread series 55.8mm grip length flat countersunk head style 14.5mm thread length right-hand
- NIIN
- 015811205
- NIIN Date
- 01/06/10
- 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
- - United Kingdom
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NA0038-100056 / 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.
