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Datasheet. NAS1271-10 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.
0.485in. ⁓1/2"
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.
1.095in. and 1.125in. ⁓1-1/8"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
double hexagon extended washer
A measurement from the bottom to the top of the head,in distinction from depth.
0.290in. and 0.310in. ⁓5/16"
0.306in. and 0.315in.
0.360in.
0.059in. and 0.079in.
The national stock number or the identification information of the end equipment for which the item is a part.
reconnaissance aircraft, nimrod 2000
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.250in. ⁓1/4"
A measurement of the longest dimension of the grip,in distinction from width.
0.615in. and 0.635in.
Those features,not otherwise specified,which may be required for proper functioning of the item.
finished head
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
16.0 microinches threads
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
63.0 microinches bearing surface of head
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
63.0 microinches grip
The chemical compound or mechanical mixture properties of which the item is fabricated.
titanium alloy uns R56400
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
AS-4967 assn std single material response
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
The document designator of the specification or standard which established the item of supply.
80205-NAS1271 professional/industrial association standard
Answers.
Unjf
Titanium alloy uns r56400
28
0.615 inches minimum and 0.635 inches maximum
Double hexagon extended washer
0.485 inches
Right-hand
3a
Schedule B number: 8108908000
Other wrought titanium
FSC 5306 ⁓ Bolts
NSN 5306-01-569-1614 BOLT,MACHINE
Used on reconnaissance aircraft, nimrod 2000. unjf thread series 28 thread quantity per inch 0.615" grip length double hexagon extended washer head style 0.485" thread length right-hand 3a thread class
- NIIN
- 015691614
- NIIN Date
- 11/20/08
- Schedule B
- 8108908000
- Name Code
- 01847
- 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
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NAS1271-10 / Bolt,machineWhat is the formal definition of this item?
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. see also screw, cap, hexagon head and screw, machine.
