3176207-B-261

3176207B261 Cap Socket Head Screw
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Datasheet. 3176207-B-261 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.

0.969in. and 1.000in. ⁓1/64"

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.

0.969in. and 1.000in. ⁓1/64"

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

flat chamfer

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

0.735in. and 0.750in.

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

0.492in. and 0.500in. ⁓1/2"

Hole Diameter
The length of a straight line which passes through the center of a hole,and terminates at the circumference.

0.061in. and 0.067in. ⁓5/64"

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

hexagon

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"

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

0.375in. and 0.379in. ⁓25/64"

Hole Quantity
The number of holes provided.

6

Hole Type
Indicates the type of hole(s) provided in the item.

drilled

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

13

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.

24100 pounds per square inch

Hardness Rating
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.

38.0 rockwell c and 45.0 rockwell c

Hole Configuration Style
The style designation that most nearly corresponds to the appearance of the hole configuration.

round internal hexagon

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

steel uns K03104

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.

astm A574 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.

chromate zinc

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.

astm B633, type 2, class 3 assn std single treatment response

Supplementary Features
Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.

meets ansi B18.3, tables 1 and 1a except drilled head

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.

unrc

Specification/standard Data
The document designator of the specification or standard which established the item of supply.

81348-FF-S-86 government specification

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.

6 type and 1/2-13Unrc size

Departure From Cited Document
The technical differentiating characteristic/s/ of an item of supply which depart/s/ from the text of a specification or a standard in that it represents a selection of characteristics stated in the specification or standard as being optional,or a variation from one or more of the stated characteristics,or an additional characteristic not stated in the specification or standard.

FF-S-66, paragraph 3.5.2, drilled head

Answers.

What class is the thread series?

Unrc

What material is the cap socket head screw made of ?

Steel uns k03104

What is the thread quantity per inch?

13

What is the inside hole diameter?

0.061 inches minimum and 0.067 inches maximum

What is the head style?

Flat chamfer

What is the thread length?

0.969 inches minimum and 1.000 inches maximum

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for 3176207-B-261?

5305-01-228-4691

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 3176207-B-261?

FSC 5305 ⁓ Screws

NSN 5305-01-228-4691 SCREW,CAP,SOCKET HEAD

unrc thread series chromate zinc surface treated 13 thread quantity per inch 0.061" hole diameter flat chamfer head style 0.969" thread length right-hand 3a thread class

NIIN
012284691
NIIN Date
03/18/86
Schedule B
7318152000 
Name Code
16282
FIIG
A003B0
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. FF-S-86 Cage 81348
2. 20097H3-8C-16Z Cage 56878

Major End Users Countries and entities

  • - Brazil 
  • - Spain 

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Nothing similar to this part number was found in our inventory

3176207-B-261 / 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.