31101

31101 Cap Socket Head Screw

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Datasheet. 31101 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.

0.230in. and 0.312in. ⁓5/16"

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.

0.280in. and 0.312in. ⁓5/16"

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

binding

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

0.223in. and 0.235in.

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

0.056in. and 0.063in. ⁓5/64"

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

strip threads

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

Part Name Assigned By Controlling Agency
The name assigned to the item by the government agency or commercial organization controlling the design of the item.

navy special project

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

steel comp 301 or steel comp 302 or steel comp 304

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

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

Answers.

What quantity is this sold in?

1EA

What class is the thread series?

Unc

What material is the cap socket head screw made of ?

Steel comp 301 or steel comp 302 or steel comp 304

What is the thread quantity per inch?

40

What is the head style?

Binding

What is the thread length?

0.230 inches minimum and 0.312 inches maximum

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for 31101?

5305-01-045-9551

How is this classified for shipping?

Schedule B number: 7318152000
nmfc 096640
Bolts and bolts and their nuts or washers exported in the same shipment

What's the federal classification of 31101?

FSC 5305 ⁓ Screws

NSN 5305-01-045-9551 SCREW,CAP,SOCKET HEAD

unc thread series passivate surface treated navy special project 40 thread quantity per inch binding head style 0.230" thread length right-hand 2a thread class

NIIN
010459551
NIIN Date
08/10/77
Schedule B
7318152000 
Name Code
16282
FIIG
A003B0
Item Weight
0.000lbs
Item Dimensions
QUP
Historical Price
$28.20 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

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

1. LL57M40S5 Cage 03038

Major End Users Countries and entities

  • - Department of The Navy 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
70.0 
LCL (less than a car load rating)
Unknown
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps) 
Commodity (for shipments via water)
Metal hardware 
NMFC (national motor freight code)
096640 SCREWS, IRON OR STEEL 
UFC (universal freight code)
50600 

Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

31101 / Screw,cap,socket headWhat is the formal definition of this item?

An externally threaded fastener whose threaded portion is of one nominal diameter. the head has an internal socket or multiple spline for use with an inserted driver. a locking feature may be incorporated in the design of the head or threads. excludes items with bevel (conical) heads. see bolt, internal wrenching. excludes screw, shoulder; and screw, machine.