Hexagon Head Cap Screw

0912789-5

(NSN) National Stock Number

5305-00-021-5912

Federal Supply Classification

5305 Screws

Item Name Code

18257

Schedule B Code

7318152000

Summary

2a thread class, right-hand thread direction, 0.750 inches minimum thread length, 0.750 inches nominal fastener length, hexagon head style, 0.188 inches nominal head height

DAC	HCC	DMIL	RNCC
5	-	-	5

RNVC	SADC	MSDS	RNAAC
9	-	-	75

Identification

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

INC	FIIG	Concept	Condition
18257	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

0.750 inches minimum

Details

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

Fastener Length

0.750 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

hexagon

Details

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

Head Height

0.188 inches nominal

Details

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

Width Between Flats

0.428 inches minimum and 0.438 inches maximum

Details

None.

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.

Thread Quantity Per Inch

Details

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

Minimum Tensile Strength

74000 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

23.0 rockwell b minimum overall and 80.0 rockwell b maximum overall

Details

A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.

Surface Finish

125.0 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

63.0 microinches threads

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

sae gr 2 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.

Thread Series Designator

unf

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.

Nondefinitive Spec/Std Data

2 type and 1 style and 2 grade

Details

The number,letter,or symbol that indicates the type,style,grade,class,and the like,of an item in a nonidentifying specification or standard.

Departure From Cited Designator

as modified by head height

Details

The variation when the item is in conformity with a type designator covered by a specification or standard,except in regard to one or more technical differentiating characteristics.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
0912789	92392	5	-	5	9	-	75
912789	92392	5	-	5	9	-	ZZ
FFS85	81348	3	-	4	1	-	75
215912	24617	X	-	5	9	-	XX
202791	02978	X	-	3	2	-	XX
7435-98Z2	52793	X	-	3	2	-	XX
215912	7X677	5	-	C	1	-	ZZ
1X41	83120	X	-	5	9	-	XX
25S54	06840	6	-	5	9	-	9Z
92134	27996	X	-	3	2	-	XX
S2X1	65282	X	-	5	9	-	XX
M21428	61038	X	-	5	9	-	XX
1AX16	76040	X	-	3	2	-	XX
DX599D	56442	5	-	5	9	-	KZ
381	26536	X	-	5	9	-	XX
3998	23382	X	-	3	2	-	XX
13K10	08645	X	-	3	2	-	XX
92134	08645	X	-	3	2	-	XX
11X121	58275	X	-	3	9	-	XX

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
-	-	-	-

RVC	WCC	TCC	SHC
-	-	-	-

Certified Supplier

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

ISO9001 / AS9100 Quality Standards
HAZMAT Certified
On Time Delivery
Qualified sales team
Counterfeit Parts Prevention
100% Product Inspections

Manufacturer

ALLIS-CHALMERS CORP

CAGE: 92392

BATAVIA , IL , 60510

UNITED STATES

View Products

FAQs

Frequently asked questions for NSN 5305-00-021-5912

What is the NIIN of the NSN 5305-00-021-5912?

The National Item Identification Number (NIIN) of the NSN 5305-00-021-5912 is 00-021-5912

When the NSN 5305-00-021-5912 was assigned to the Federal Catalog?

It was assigned 61 years ago, on Tue, Jan 1, 1963

Does the NSN 5305-00-021-5912 contain any precious metals?

Type/content is unknown

Does the NSN 5305-00-021-5912 contain any hazardous material?

No data in HMIRS

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