Close Tolerance Bolt

STSBG001A05U020

STSBG001A05U020
(NSN) National Stock Number
5306-00-159-2661
Federal Supply Classification
5306 Bolts
Item Name Code
27851
Schedule B Code
7318152000
Summary

3a thread class, right-hand thread direction, 0.343 inches minimum and 0.390 inches maximum thread length, 1.593 inches minimum and 1.640 inches maximum fastener length, double hexagon head style, 0.187 inches nominal head height

DAC HCC DMIL RNCC
2 - - 7
RNVC SADC MSDS RNAAC
2 - - SE
Identification

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.

INC FIIG Concept Condition
27851 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
0.343 inches minimum and 0.390 inches maximum
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Fastener Length
1.593 inches minimum and 1.640 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
double hexagon
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
Head Height
0.187 inches nominal
Details A measurement from the bottom to the top of the head,in distinction from depth.
Width Between Flats
0.492 inches minimum and 0.502 inches maximum
Details None.
Grip Diameter
0.3110 inches minimum and 0.3120 inches maximum
Details The length of a straight line which passes through the center of the grip,and terminates at the circumference.
Nominal Thread Diameter
0.312 inches
Details The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
Grip Length
1.250 inches nominal
Details A measurement of the longest dimension of the grip,in distinction from width.
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.
Minimum Tensile Strength
156000 pounds per square inch
Details The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.
Surface Finish
32.0 microinches bearing surface of head
Details Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
Surface Finish
32.0 microinches grip
Details Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
Material
steel overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material Document And Classification
h-11,stsbs001,lockheed aircraft corp mfr ref single 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.
Surface Treatment
nickel overall and cadmium overall and chromate overall
Details 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.
Thread Series Designator
unjf
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.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
11701A05U020 59563 2 - 5 2 - ZZ
STSBG001A05U020 06725 5 - 5 2 - ZZ
STSBG001A05U020 27624 5 - 5 2 - ZZ
68485-5A020 80539 4 - 3 2 - TU
STSBG001A05U020 57928 5 - 5 2 - ZZ
68485-5A020 56878 4 - 5 9 - TU
STSBG001A05U020 56878 5 - 5 2 - ZZ
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
- 574 Z 9

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Manufacturer
LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY
CAGE: 98897
MARIETTA , GA , 30063-0001
UNITED STATES
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FAQs
Frequently asked questions for NSN 5306-00-159-2661
What is the NIIN of the NSN 5306-00-159-2661?
The National Item Identification Number (NIIN) of the NSN 5306-00-159-2661 is 00-159-2661
When the NSN 5306-00-159-2661 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Sun, Oct 24, 1971
Does the NSN 5306-00-159-2661 contain any precious metals?
Does not contain precious metal
Does the NSN 5306-00-159-2661 contain any hazardous material?
No data in HMIRS

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