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Datasheet. BACB30NM4K3 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.
0.425in. ⁓7/16"
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.
0.5975in. and 0.6275in. ⁓41/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
hexagon
A measurement from the bottom to the top of the head,in distinction from depth.
0.125in. and 0.140in. ⁓9/64"
0.430in. and 0.439in.
The length of a straight line which passes through the center of the grip,and terminates at the circumference.
0.2481in. and 0.2495in.
The national stock number or the identification information of the end equipment for which the item is a part.
boeing 757 aircraft
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.2500in. ⁓1/4"
A measurement of the longest dimension of the grip,in distinction from width.
0.1875in.
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.
160000 pounds per square inch
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
32.0 microinches grip
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
32.0 microinches head
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
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
bolt, hex head
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.
6AL-4V titanium
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.
AMS4967 assn std single material response or AMS4928 assn std single material response
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.
aluminum
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
BMS10-85, type 1, class a mfr ref single treatment 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
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.
item is faa certified
Answers.
Unjf
Titanium alloy uns r56400
28
0.1875 inches
Hexagon
0.425 inches
Right-hand
3a
Schedule B number: 8108908000
Other wrought titanium
FSC 5306 ⁓ Bolts
NSN 5306-01-522-9854 BOLT,SHEAR
Used on boeing 757 aircraft. unjf thread series aluminum surface treated 6al-4v titanium bolt, hex head 28 thread quantity per inch 0.1875" grip length hexagon head style 0.425" thread length right-hand 3a thread class
- NIIN
- 015229854
- NIIN Date
- 08/16/04
- Schedule B
- 8108908000
- Name Code
- 15903
- 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
Other Part Numbers Parts with same form, fit, and function by other manufacturers
Major End Users Countries and entities
- - Department of The Navy
- - Department of The Air Force
- - Australia
- - New Zealand
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BACB30NM4K3 / Bolt,shearWhat is the formal definition of this item?
A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. the head is designed to accommodate an external wrench or driver. the head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. the unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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. a locking feature may be incorporated in the design of the head or threads. see bolt, machine and bolt, clevis.
