MIL-B-857TYB

MILB857TYB Cap Hexagon Head Screw

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Datasheet. MIL-B-857TYB 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.

1.596in. and 1.750in. ⁓1-3/4"

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.

1.690in. and 1.790in. ⁓1-51/64"

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

hexagon

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

0.302in. and 0.364in. ⁓3/8"

Width Between Flats

0.850in. and 0.875in.

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

0.500in. ⁓1/2"

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

13

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

nickel alloy R-405 or nickel alloy 400

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.

QQ-N-281 cl a or cl b fed spec all material responses

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 class is the thread series?

Unc

What material is the cap hexagon head screw made of ?

Nickel alloy r-405 or nickel alloy 400

What is the thread quantity per inch?

13

What is the head style?

Hexagon

What is the thread length?

1.596 inches minimum and 1.750 inches maximum

What is the thread direction?

Right-hand

What is the thread class?

2a

What is the NSN for MIL-B-857TYB?

5305-01-251-2915

How is this classified for shipping?

Schedule B number: 7508900000
nmfc 139820
Other articles of nickel (excluding cloth, grill & netting of nickel wire)

What's the federal classification of MIL-B-857TYB?

FSC 5305 ⁓ Screws

NSN 5305-01-251-2915 SCREW,CAP,HEXAGON HEAD

unc thread series 13 thread quantity per inch hexagon head style 1.596" thread length right-hand 2a thread class

NIIN
012512915
NIIN Date
03/16/87
Schedule B
7508900000 
Name Code
18257
FIIG
A003B0
Item Weight
0.100lbs
Item Dimensions
--
QUP
 
Historical Price
$90.65 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

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

1. 501-7055651 ITEM 19 Cage 53711
2. 218001937 Cage 96169
3. 516-5343926 PIECE 18 Cage 53711
4. 60-01-3657A Cage 96169

Major End Users Countries and entities

  • - Department of The Navy 
  • - United Kingdom 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
85.0 
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
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Metal hardware 
NMFC (national motor freight code)
139820 NICKEL BOLTS/NAILS/NUTS/RIVETS ETC 
UFC (universal freight code)
70220 

Similar by Design Other screws with similar characteristics

Nothing similar to this part number was found in our inventory

MIL-B-857TYB / Screw,cap,hexagon headWhat is the formal definition of this item?

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.