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Datasheet. BACB30FA4R8P specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
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.
4.000in. ⁓4-1/64"
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.464in. and 0.510in.
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.
patch locking feature
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
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.
100 degree head, dovetail recess, self locking element is polyamide per MIL-F-18240; 160 to 180ksi per MIL-M-6875
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
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
QQ-P-416, TY2, CL2 fed spec 1st 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.
unjc
Answers.
Unjc
28
3a
FSC 5306 ⁓ Bolts
NSN 5306-01-510-4659 BOLT,CLOSE TOLERANCE
unjc thread series cadmium surface treated 100 degree head, dovetail recess, self locking element is polyamide per mil-f-18240; 160 to 180ksi per mil-m-6875 28 thread quantity per inch 3a thread class
- NIIN
- 015104659
- NIIN Date
- 07/21/03
- Schedule B
- Name Code
- 27851
- 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
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BACB30FA4R8P / Bolt,close toleranceWhat is the formal definition of this item?
An externally threaded fastener whose unthreaded portion is of a specified 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. 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. a locking feature may be incorporated in the design of the head or threads. for items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. for items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.
