Hexagon Self-Locking Nut

79-NE-040 1/4-20

(NSN) National Stock Number

5310-00-241-6604

Federal Supply Classification

5310 Nuts and Washers

Item Name Code

05277

Schedule B Code

7318160000

Summary

3b thread class, right-hand thread direction, prevailing torque with nonmetallic insert locking feature, hexagon nut style, 0.240 inches minimum and 0.360 inches maximum nut height, a4 bradley fighting vehicle; a3 bradley fighting vehicle; logistics support vessel end item identification

DAC	HCC	DMIL	RNCC
5	-	-	5

RNVC	SADC	MSDS	RNAAC
1	-	-	ZZ

Identification

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes:nut (1), self-locking, cap.

INC	FIIG	Concept	Condition
05277	A021A0	1	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.

Locking Feature

prevailing torque with nonmetallic insert

Details

An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.

Nut Style

hexagon

Details

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

Nut Height

0.240 inches minimum and 0.360 inches maximum

Details

None.

End Item Identification

a4 bradley fighting vehicle; a3 bradley fighting vehicle; logistics support vessel

Details

The national stock number or the identification information of the end equipment for which the item is a part.

Width Across Flats

0.428 inches minimum and 0.439 inches maximum

Details

The shortest straight line between flats,perpendicular to the height.

Temp Rating

250.0 deg fahrenheit nominal

Details

A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.

Thread Series

unc

Details

A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.

Thread Quantity Per Inch

Details

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

Nominal Thread Size

0.250 inches

Details

A designation that is used for the purpose of general identification of the thread.

Countersink Angle

88.0 degrees nominal nut

Details

The included angle of the countersink.

Bearing Surface Type

chamfered

Details

Indicates the type of bearing surface.

Bearing Surface Finish

125.0 microinches

Details

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

Material

plastic polyhexamethylene amide locking insert

Details

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

Material

steel comp 301 or steel comp 302 or steel comp 303 or steel comp 303f or steel comp 303s or steel comp 304 or steel comp 304l or steel comp 305 or steel comp 308 or steel comp 309 or steel comp 310 or steel comp 310s or steel comp 314 or steel comp 316 or steel comp 316l or steel comp 317 or steel comp 321 or steel comp 323 or steel comp 324 or steel comp 347 or steel comp 348 or steel comp 385 or steel comp 302b or steel comp 384 nut

Details

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

Material Document And Classification

66 fed std all material responses nut

Details

The specification, standard, or manufacturer's reference and the classification designation, such as class, condition, temper, and the like, that identifies the material.

Material Document And Classification

mil-m-20693,comp a,ty 1 mil spec single material response locking insert

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 nut

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 nut

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.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
218006589	D9182	6	-	C	1	-	ZZ
52-46-77	D9182	6	-	C	1	-	ZZ
60-07-9323	D9182	6	-	C	1	-	ZZ
63A142310P1	D9182	6	-	C	1	-	ZZ
MS17830-04C	D9182	6	-	C	1	-	ZZ
MS17830-4C	A3121	5	-	5	2	-	ZR
MS17830-4C	A3460	5	-	5	2	-	ZR
0740688	S3002	3	-	5	2	-	YB
H549162501	36090	1	-	5	1	-	HD
1287424-8	83115	5	-	5	9	-	ZF
2640-682-05 ITEM 54	96169	5	-	5	1	-	ZZ
H577-3302-230	96169	5	-	C	1	-	ZZ
F188	00365	5	-	5	1	-	ZZ
122-5277668 ITEM 51	53711	5	-	C	1	-	ZZ
501-7066642-8	53711	1	-	5	1	-	ZZ
5486661 ITEM 81	53711	6	-	C	1	-	ZZ
593-7067139-230	53711	5	-	C	1	-	ZZ
6961941 FIND 8	53711	6	-	C	1	-	ZZ
79-NE-040 1/4-20	72962	5	-	5	9	-	ZZ
2100-2240	06032	5	-	5	9	-	KZ
A7058.001.156	34494	5	-	5	9	-	ZZ
5486661 ITEM 81	43689	6	-	C	1	-	ZZ
709-5343924 ITEM 172	43689	5	-	C	1	-	ZZ
845-4558709 ITEM 54	80064	5	-	5	1	-	ZZ
M24129-3-4C	81349	4	-	E	8	-	PA
MS17830-4C	96906	4	-	2	2	-	KZ