Machine Screw

ABS20642-4F11

ABS20642-4F11
(NSN) National Stock Number
5305-00-007-3176
Federal Supply Classification
5305 Screws
Item Name Code
06657
Schedule B Code
7318152000
Summary

3a thread class, right-hand thread direction, 0.291 inches minimum and 0.341 inches maximum thread length, 0.989 inches minimum and 1.019 inches maximum fastener length, flat countersunk undercut head style, 0.648 inches minimum and 0.666 inches maximum head diameter

DAC HCC DMIL RNCC
5 - - 3
RNVC SADC MSDS RNAAC
2 - - SE
Identification

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

INC FIIG Concept Condition
06657 A500D0 - 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
0.291 inches minimum and 0.341 inches maximum
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Fastener Length
0.989 inches minimum and 1.019 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
flat countersunk undercut
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
Head Diameter
0.648 inches minimum and 0.666 inches maximum
Details The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
Head Height
0.097 inches nominal
Details A measurement from the bottom to the top of the head,in distinction from depth.
Internal Drive Style
torque set
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
Nominal Thread Diameter
0.250 inches
Details The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
Features Provided
o ring
Details Those features,not otherwise specified,which may be required for proper functioning of the item.
Thread Quantity Per Inch
28
Details The number of threads on the item per linear inch measured on a line parallel to the thread axis.
Minimum Tensile Strength
160000 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.
Countersink Angle
99.0 degrees minimum and 101.0 degrees maximum
Details The included angle of the countersink.
Screw Material
steel comp 8740
Details The chemical compound or mechanical mixture properties of which the screw is fabricated.
Screw Surface Treatment
cadmium and chromate
Details The metallic,nonmetallic,and/or chemical properties with which the screw is plated,dipped and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
Screw Surface Treatment Document And Classification
qq-p-416 ty 2 cl 2 fed spec single treatment response
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 of the screw.
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.
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N U - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
63220 - W -
RVC WCC TCC SHC
- 72E Z 9

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Manufacturer
PATTONAIR USA INC DBA INCORA DIV UNISEAL DIVISION
CAGE: 02310
FORT WORTH , TX , 76137-4213
UNITED STATES
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FAQs
Frequently asked questions for NSN 5305-00-007-3176
What is the NIIN of the NSN 5305-00-007-3176?
The National Item Identification Number (NIIN) of the NSN 5305-00-007-3176 is 00-007-3176
When the NSN 5305-00-007-3176 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Fri, Jun 30, 1972
Does the NSN 5305-00-007-3176 contain any precious metals?
Type/content is unknown
Does the NSN 5305-00-007-3176 contain any hazardous material?
No data in HMIRS

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