Externally Relieved Body Bolt

209-076-345-3

209-076-345-3
(NSN) National Stock Number
5306-01-256-6828
Federal Supply Classification
5306 Bolts
Item Name Code
06675
Schedule B Code
7318152000
Summary

3a thread class, right-hand thread direction, 0.165 inches minimum and 0.205 inches maximum thread length, 1.810 inches minimum and 1.840 inches maximum fastener length, undercut hexagon head style, 0.188 inches nominal head height

DAC HCC DMIL RNCC
A - - 3
RNVC SADC MSDS RNAAC
2 - - KZ
Identification

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes:undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

INC FIIG Concept Condition
06675 A003B0 - 1
Specifications
Thread Class
3a
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Thread Direction
right-hand
Details 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.
Thread Length
0.165 inches minimum and 0.205 inches maximum
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Fastener Length
1.810 inches minimum and 1.840 inches maximum
Details 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.
Head Style
undercut hexagon
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
Head Height
0.188 inches nominal
Details A measurement from the bottom to the top of the head,in distinction from depth.
Width Between Flats
0.750 inches nominal
Details None.
Shank Unthreaded Hole Diameter
0.106 inches minimum first hole and 0.116 inches maximum first hole
Details The length of a straight line which passes through the center of the shank unthreaded hole,and terminates at the inside circumference.
First Diameter From Head
0.438 inches nominal
Details None.
Second Diameter From Head
0.397 inches minimum and 0.399 inches maximum
Details None.
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.935 inches minimum and 0.945 inches maximum
Details None.
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
0.438 inches nominal
Details None.
Nominal Thread Diameter
0.375 inches
Details The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
Thread Quantity Per Inch
24
Details The number of threads on the item per linear inch measured on a line parallel to the thread axis.
Distance From Head Largest Bearing Surface To Shank Hole Center
1.635 inches minimum first hole and 1.645 inches maximum first hole
Details The distance from the shank hole centerline to the largest bearing surface of the head.
Externally Relieved Body Diameter Quantity
2
Details The number of externally relieved diameters on the body,adjacent to the head.
Special Features
organic finish on shank,s2 ty 1 per bps 4310
Details 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 on one or more other functions.
Material
steel comp 4140 overall or steel comp 4340 overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
mil-s-5626 cond c4 mil spec 1st material response overall or mil-s-5000 cond c4 mil spec 2nd material response overall
Details The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.
Thread Series Designator
unf
Details A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N A - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
48950 - W -
RVC WCC TCC SHC
- 573 Z 9

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Manufacturer
BELL TEXTRON INC
CAGE: 97499
FORT WORTH , TX , 76118
UNITED STATES
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FAQs
Frequently asked questions for NSN 5306-01-256-6828
What is the NIIN of the NSN 5306-01-256-6828?
The National Item Identification Number (NIIN) of the NSN 5306-01-256-6828 is 01-256-6828
When the NSN 5306-01-256-6828 was assigned to the Federal Catalog?
It was assigned 37 years ago, on Mon, Jun 8, 1987
Does the NSN 5306-01-256-6828 contain any precious metals?
Does not contain precious metal
Does the NSN 5306-01-256-6828 contain any hazardous material?
No data in HMIRS

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