Close Tolerance Screw

LK3U7

(NSN) National Stock Number

5305-00-001-9753

Federal Supply Classification

5305 Screws

Item Name Code

29294

Schedule B Code

7318152000

Summary

3a thread class, right-hand thread direction, 0.320 inches minimum and 0.370 inches maximum thread length, 0.768 inches minimum and 0.798 inches maximum fastener length, pan head style, 0.357 inches minimum and 0.373 inches maximum head diameter

DAC	HCC	DMIL	RNCC
5	-	-	5

RNVC	SADC	MSDS	RNAAC
9	-	-	ZZ

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

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

0.320 inches minimum and 0.370 inches maximum

Details

A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

Fastener Length

0.768 inches minimum and 0.798 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

pan

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the head.

Head Diameter

0.357 inches minimum and 0.373 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

0.122 inches minimum and 0.133 inches maximum

Details

A measurement from the bottom to the top of the head,in distinction from depth.

Grip Diameter

0.1890 inches minimum and 0.1895 inches maximum

Details

The length of a straight line which passes through the center of the grip,and terminates at the circumference.

Internal Drive Style

cross recess type 1

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.

Nominal Thread Diameter

0.190 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

0.428 inches minimum and 0.448 inches maximum

Details

A measurement of the longest dimension of the grip,in distinction from width.

Thread Quantity Per Inch

Details

The number of threads on the item per linear inch measured on a line parallel to the thread axis.

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.

Surface Finish

32.0 microinches threads

Details

Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.

Material

iron alloy 660 overall

Details

The chemical compound or mechanical mixture properties of which the item is fabricated.

Material Document And Classification

ams 5737 assn std 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

passivate 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

qq-p-35 fed spec 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

81205-bacb30lk 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
BACB30LK3U7	17446	5	-	3	2	-	ZZ
BACB30LK3U7	17943	5	-	3	2	-	ZZ
BACB30LK3U7	06950	5	-	3	2	-	ZZ
BACB30LK3U7	1RC86	5	-	3	2	-	ZZ
BACB30LK3U7	06725	5	-	3	2	-	ZZ
BACB30LK3U7	27624	5	-	3	2	-	ZZ
BACB30LK3U7	06710	5	-	3	2	-	ZZ
BACB30LK3U7	56878	5	-	3	2	-	ZZ
BACB30LK3U7	81205	2	-	7	2	-	SE

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
48950	-	W	-

RVC	WCC	TCC	SHC
-	713	Z	9

Certified Supplier

Order with confidence. We are a valued certified supplier serving customers in the military and aerospace industries.

Fast Quote Times
Qualified sales team
100% Product Inspections
Counterfeit Parts Prevention

Manufacturer

VALLEY-TODECO, INC. DBA ARCONIC FASTENING SYSTEMS

CAGE: 06710

SYLMAR , CA , 91342-3830

UNITED STATES

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FAQs

Frequently asked questions for NSN 5305-00-001-9753

What is the NIIN of the NSN 5305-00-001-9753?

The National Item Identification Number (NIIN) of the NSN 5305-00-001-9753 is 00-001-9753

When the NSN 5305-00-001-9753 was assigned to the Federal Catalog?

It was assigned 52 years ago, on Mon, Oct 9, 1972

Does the NSN 5305-00-001-9753 contain any precious metals?

Type/content is unknown

Does the NSN 5305-00-001-9753 contain any hazardous material?

No data in HMIRS

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