81964

81964 Externally Relieved Body Bolt

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Datasheet. 81964 specification

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

3a

Thread Length
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.

0.750in. ⁓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.

2.438in. ⁓2-29/64"

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

hexagon extended washer

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

0.277in. and 0.323in. ⁓21/64"

Width Between Flats

0.551in. and 0.562in.

Extended Washer Diameter

0.805in. and 0.827in.

Extended Washer Thickness

0.051in. and 0.080in.

First Diameter From Head

0.369in. and 0.375in.

Second Diameter From Head

0.295in. and 0.305in.

Distance From Largest Bearing Surface Of Head To End Of First Diameter

0.185in.

Distance From Largest Bearing Surface Of Head To End Of Second Diameter

1.623in.

Answers.

What is the head style?

Hexagon extended washer

What is the thread length?

0.750 inches

What is the thread class?

3a

What is the NSN for 81964?

5306-00-146-2677

What's the federal classification of 81964?

FSC 5306 ⁓ Bolts

NSN 5306-00-146-2677 BOLT,EXTERNALLY RELIEVED BODY

hexagon extended washer head style 0.750" thread length 3a thread class

NIIN
001462677
NIIN Date
09/10/71
Schedule B
 
Name Code
06675
FIIG
A003B0
QUP
 
Historical Price
$35.25 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

Major End Users Countries and entities

  • - Germany 

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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
Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing 
Commodity (for shipments via water)
Bolts or nuts (iron or steel),(less than 35 feet) 
NMFC (national motor freight code)
093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3) 
UFC (universal freight code)
48950 

Similar by Design Other bolts with similar characteristics

Nothing similar to this part number was found in our inventory

81964 / Bolt,externally relieved bodyWhat is the formal definition of this item?

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). it is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. excludes bolt, internal wrenching and thumbscrew. see also screw, externally relieved body.