Close Tolerance Screw

CA2730-4-9

CA2730-4-9
(NSN) National Stock Number
5305-00-061-9133
Federal Supply Classification
5305 Screws
Item Name Code
29294
Schedule B Code
-
Summary

3a thread class, 0.270 inches minimum and 0.290 inches maximum thread length, 1.020 inches nominal fastener length, flat chamfer head style, 0.374 inches minimum and 0.375 inches maximum head diameter, 0.253 inches minimum and 0.273 inches maximum head height

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

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.

INC FIIG Concept Condition
29294 A003B0 - 1
Specifications
Thread Class
3a
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Thread Length
0.270 inches minimum and 0.290 inches maximum
Details A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
Fastener Length
1.020 inches nominal
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 chamfer
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
Head Diameter
0.374 inches minimum and 0.375 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
0.253 inches minimum and 0.273 inches maximum
Details A measurement from the bottom to the top of the head,in distinction from depth.
Grip Diameter
0.2487 inches minimum and 0.2492 inches maximum
Details The length of a straight line which passes through the center of the grip,and terminates at the circumference.
Shank Unthreaded Hole Diameter
0.076 inches minimum first hole and 0.086 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.
Grip Length
0.562 inches minimum and 0.582 inches maximum
Details A measurement of the longest dimension of the grip,in distinction from width.
Width Across Flats
0.1875 inches minimum and 0.1900 inches maximum
Details The shortest straight line between flats,perpendicular to the height.
Distance From Head Largest Bearing Surface To Shank Hole Center
0.911 inches nominal first hole
Details The distance from the shank hole centerline to the largest bearing surface of the head.
Special Features
retaining element in shank
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.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
AS104-04-09 84256 E - 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
- 573 Z 9

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Manufacturer
HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS
CAGE: 29372
TORRANCE , CA , 90505-5103
UNITED STATES
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FAQs
Frequently asked questions for NSN 5305-00-061-9133
What is the NIIN of the NSN 5305-00-061-9133?
The National Item Identification Number (NIIN) of the NSN 5305-00-061-9133 is 00-061-9133
When the NSN 5305-00-061-9133 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Thu, Jun 15, 1967
Does the NSN 5305-00-061-9133 contain any precious metals?
Does not contain precious metal
Does the NSN 5305-00-061-9133 contain any hazardous material?
No data in HMIRS

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