3180491-1

31804911 Shoulder Screw

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Datasheet. 3180491-1 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

3a

Thread Direction
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.

RIGHT-Hand

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

0.225in. and 0.235in. ⁓1/4"

Fastener Length
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.

0.860in. and 0.880in. ⁓57/64"

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

pan no. 2

Head Diameter
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.

0.260in. and 0.270in.

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

0.110in. and 0.120in. ⁓1/8"

Shoulder Diameter
The length of a straight line which passes through the center of the shoulder and terminates at the circumference.

0.1858in. first shoulder and 0.1863in. first shoulder

Shoulder Length
The length of the enlarged portion of the shank on the item,in distinction from width or diameter.

0.635in. first shoulder and 0.645in. first shoulder

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

slot

Nominal Thread Diameter
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.

0.112in. (UTS #4)

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

40

Shoulder Shape
The physical configuration of the unthreaded portion of a body adjacent to the head which is larger than the diameter of the shank.

round first shoulder

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

steel comp 630

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

ams 5643, 17-4Ph assn std single material response

Surface Treatment
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.

passivate

Surface Treatment Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.

QQ-P-35, type 1, 2, or 3 fed spec single treatment response

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unjc

Answers.

What class is the thread series?

Unjc

What material is the shoulder screw made of ?

Steel comp 630

What is the thread quantity per inch?

40

What is the head style?

Pan no. 2

What is the thread length?

0.225 inches minimum and 0.235 inches maximum

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for 3180491-1?

5305-01-398-5190

How is this classified for shipping?

Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of 3180491-1?

FSC 5305 ⁓ Screws

NSN 5305-01-398-5190 SCREW,SHOULDER

unjc thread series passivate surface treated 40 thread quantity per inch pan no. 2 head style 0.225" thread length right-hand 3a thread class

NIIN
013985190
NIIN Date
11/04/94
Schedule B
7318152000 
Name Code
22846
FIIG
A003B0
QUP
 
Historical Price
$413.03 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Major End Users Countries and entities

  • - Department of The Air Force 

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Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

3180491-1 / Screw,shoulderWhat is the formal definition of this item?

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. it has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. the head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. no. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. a locking feature may be incorporated in the design of the head or threads. for items which are both shouldered and have an externally relieved body, use screw, externally relieved body. for items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. excludes bolt, internal wrenching and screw, cap, socket head.