Shear Bolt

VS2521-7F88

VS2521-7F88
(NSN) National Stock Number
5306-00-025-4238
Federal Supply Classification
5306 Bolts
Item Name Code
15903
Schedule B Code
7318152000
Summary

3a thread class, right-hand thread direction, 0.906 inches minimum and 0.973 inches maximum thread length, 6.416 inches minimum and 6.463 inches maximum fastener length, double hexagon head style, 0.257 inches nominal head height

DAC HCC DMIL RNCC
5 - - C
RNVC SADC MSDS RNAAC
1 ZZ - ZZ
Identification

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.

INC FIIG Concept Condition
15903 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
0.906 inches minimum and 0.973 inches maximum
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Fastener Length
6.416 inches minimum and 6.463 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
0.257 inches nominal
Details A measurement from the bottom to the top of the head,in distinction from depth.
Width Between Flats
0.678 inches minimum and 0.689 inches maximum
Details None.
Grip Diameter
0.4358 inches minimum and 0.4367 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
0.438 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
5.490 inches minimum and 5.510 inches maximum
Details A measurement of the longest dimension of the grip,in distinction from width.
Thread Quantity Per Inch
20
Details The number of threads on the item per linear inch measured on a line parallel to the thread axis.
Minimum Tensile Strength
220000 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.
Hardness Rating
46.0 rockwell c minimum and 50.0 rockwell c maximum overall
Details A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
Part Name Assigned By Controlling Agency
navy special project
Details The name assigned to the item by the government agency or commercial organization controlling the design of the item.
Material
steel comp h11 overall
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Surface Treatment
cadmium 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.
Surface Treatment Document And Classification
nas 672 assn std single treatment response overall
Details The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
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.
Specification/Standard Data
26512-gb511b manufacturers standard
Details The document designator of the specification or standard which established the item of supply.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
BM17020-7-88A 17446 5 - C 1 - ZZ
AIC516B7-88 06725 1 - 3 2 - ZZ
EWSB22D7-A88 80539 1 - 3 2 - ZZ
C081-7-88 92215 5 - 5 2 - ZZ
VS2521-7F88 92215 4 - 5 9 - ZZ
BM17020-7-88A 97928 1 - 5 9 - ZZ
GB511B7-88 26512 4 - 5 2 - ZZ
EWSB22-7A88 56878 4 - 3 2 - ZZ
EWSB22D7-A88 56878 1 - 5 9 - ZZ
EWSB22-7A88 50392 4 - 5 9 - ZZ
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N A 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
HOWMET GLOBAL FASTENING SYSTEMS INC
CAGE: 06950
CITY OF INDUSTRY , CA , 91744-4409
UNITED STATES
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FAQs
Frequently asked questions for NSN 5306-00-025-4238
What is the NIIN of the NSN 5306-00-025-4238?
The National Item Identification Number (NIIN) of the NSN 5306-00-025-4238 is 00-025-4238
When the NSN 5306-00-025-4238 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Sat, Oct 21, 1972
Does the NSN 5306-00-025-4238 contain any precious metals?
Does not contain precious metal
Does the NSN 5306-00-025-4238 contain any hazardous material?
No data in HMIRS
What is the ESD classification of NSN 5306-00-025-4238?
No known electrostatic discharge

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