A51B28521-11

A51B2852111 Internally Relieved Body Bolt

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Datasheet. A51B28521-11 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.

0.355in. ⁓23/64"

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.

2.125in. ⁓2-1/8"

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

round w/wrench flats

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

0.750in.

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

0.125in. ⁓1/8"

Width Between Flats

0.500in. and 0.510in.

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

0.3740in. and 0.3745in.

Shoulder Length
The length of the enlarged portion/s/ located on the shank of the item.

1.770in.

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

0.070in. first hole and 0.080in. first hole

Concentric Hole Depth

1.600in.

Concentric Hole Diameter

0.200in. and 0.206in.

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

0.250in. ⁓1/4"

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

28

Distance From Head Largest Bearing Surface To Shank Hole Center
The distance from the shank hole centerline to the largest bearing surface of the head.

2.005in. first hole

Special Features
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.

chamfer under side of head 45 deg by 0.050 in.

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

titanium alloy

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.

G-3111, comp 6AL-6V-2Sn fscm 26512 mfr ref single material response

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

concentric hole unthreaded

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.

unjf

Answers.

What quantity is this sold in?

1EA

What class is the thread series?

Unjf

What is the style?

Concentric hole unthreaded

What material is the internally relieved body bolt made of ?

Titanium alloy

What is the thread quantity per inch?

28

What is the head style?

Round w/wrench flats

What is the thread length?

0.355 inches minimum

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for A51B28521-11?

5306-00-007-2827

How is this classified for shipping?

Schedule B number: 8109900000
nmfc 136500
Zirconium and articles thereof nesoi

What's the federal classification of A51B28521-11?

FSC 5306 ⁓ Bolts

NSN 5306-00-007-2827 BOLT,INTERNALLY RELIEVED BODY

unjf thread series concentric hole unthreaded chamfer under side of head 45 deg by 0.050 in. 28 thread quantity per inch round w/wrench flats head style 0.355" thread length right-hand 3a thread class

NIIN
000072827
NIIN Date
07/06/72
Schedule B
8109900000 
Name Code
06676
FIIG
A003B0
Item Weight
0.100lbs
Item Dimensions
--
QUP
Historical Price
$129.35 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

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)
Rating variable 
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)
136500 METAL NOI/METAL ALLOYS NOI 
UFC (universal freight code)
68455 

Similar by Design Other bolts with similar characteristics

Nothing similar to this part number was found in our inventory

A51B28521-11 / Bolt,internally relieved bodyWhat is the formal definition of this item?

An externally threaded fastener whose external threaded portion is of one nominal diameter. it has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. the concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. the head is designed to be held or driven by an external and/or internal driver. for items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see bolt, fluid passage.