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Datasheet. BACB30NN3R6 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.
0.345in. ⁓23/64"
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.
0.637in. ⁓41/64"
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.
0.345in. and 0.383in.
The length of a straight line which passes through the center of the grip,and terminates at the circumference.
1.895in.
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
cross recess type 1
The national stock number or the identification information of the end equipment for which the item is a part.
aircraft, B757
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.190in. (UTS #10)
A measurement of the longest dimension of the grip,in distinction from width.
0.375in.
Those features,not otherwise specified,which may be required for proper functioning of the item.
cetyl alcohol lubricant
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
The included angle of the countersink.
99.0 degrees and 101.0 degrees
A characteristic of light that can be specified in terms of luminance,dominant wavelength,and purity.
red threads
The chemical compound or mechanical mixture properties of which the item is fabricated.
titanium alloy
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.
phosphate
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
Answers.
Unjf
Titanium alloy
32
0.375 inches
Flat countersunk
0.345 inches
Right-hand
3a
Schedule B number: 8109900000
Zirconium and articles thereof nesoi
FSC 5305 ⁓ Screws
NSN 5305-01-521-4398 SCREW,CLOSE TOLERANCE
Used on aircraft, b757. unjf thread series phosphate surface treated 32 thread quantity per inch 0.375" grip length flat countersunk head style 0.345" thread length right-hand 3a thread class
- NIIN
- 015214398
- NIIN Date
- 06/22/04
- Schedule B
- 8109900000
- 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
Other Part Numbers Parts with same form, fit, and function by other manufacturers
Major End Users Countries and entities
- - New Zealand
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BACB30NN3R6 / 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.
