321861-20

32186120 Machine Screw

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Datasheet. 321861-20 specification

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

2a

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.

0.156in. ⁓5/32"

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.

0.849in. and 0.880in. ⁓57/64"

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

pan

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

0.2050in. and 0.2190in.

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

0.070in. and 0.080in. ⁓3/32"

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

cross recess type 1

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

Minimum Tensile Strength
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.

80000 pounds per square inch

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

steel corrosion resisting

Screw 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 screw material.

QQ-S-763, 300 series fed spec single material response or 66, 300 series fed std single material response or comp 16-18 or 18-8 assn std single material response

Screw Surface Treatment
The metallic,nonmetallic,and/or chemical properties with which the screw is plated,dipped and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.

passivate

Screw 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 of the screw.

QQ-P-35 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.

unc

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

3 type

Answers.

What class is the thread series?

Unc

What type of screw surface treatment?

Passivate

What is the thread quantity per inch?

40

What is the head style?

Pan

What is the thread length?

0.156 inches

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for 321861-20?

5305-01-491-4192

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 321861-20?

FSC 5305 ⁓ Screws

NSN 5305-01-491-4192 SCREW,MACHINE

unc thread series passivate screw surface treated 40 thread quantity per inch pan head style 0.156" thread length right-hand 2a thread class

NIIN
014914192
NIIN Date
10/22/01
Schedule B
7318152000 
Name Code
06657
FIIG
A500D0
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

Other Part Numbers Parts with same form, fit, and function by other manufacturers

Major End Users Countries and entities

  • - Germany 

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Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

321861-20 / Screw,machineWhat 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, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). no. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. see also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.