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Datasheet. J644P21A specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
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
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.740in. and 0.820in. ⁓53/64"
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.
1.490in. and 1.510in. ⁓1-33/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
double hexagon extended washer
A measurement from the bottom to the top of the head,in distinction from depth.
0.293in. and 0.313in. ⁓21/64"
0.312in.
0.428in. and 0.448in.
0.060in. and 0.070in.
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"
A measurement of the longest dimension of the grip,in distinction from width.
0.690in. and 0.750in.
Those features,not otherwise specified,which may be required for proper functioning of the item.
finished head
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
32.0 microinches grip
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
32.0 microinches threads
The chemical compound or mechanical mixture properties of which the item is fabricated.
nickel
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
718, fscm 74900 mfr ref single material response
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.
1EA
Unjf
Nickel
28
0.690 inches minimum and 0.750 inches maximum
Double hexagon extended washer
0.740 inches minimum and 0.820 inches maximum
Right-hand
3a
Schedule B number: 7508900000
nmfc 139820
Other articles of nickel (excluding cloth, grill & netting of nickel wire)
FSC 5306 ⁓ Bolts
NSN 5306-00-084-3318 BOLT,MACHINE
unjf thread series 28 thread quantity per inch 0.690" grip length double hexagon extended washer head style 0.740" thread length right-hand 3a thread class
- NIIN
- 000843318
- NIIN Date
- 05/26/74
- Schedule B
- 7508900000
- Name Code
- 01847
- FIIG
- A003B0
- Item Weight
- 0.100lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $8.20 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
Major End Users Countries and entities
- - Department of The Navy
- - Department of The Air Force
- - Poland
- - Spain
- - Singapore
- - Saudi Arabia
- - Australia
- - Canada
- - France
- - Germany
- - Republic of Korea
- - Portugal
- - Italy
- - Greece
- - Turkey
Availability for J644P21A A member of our team will provide you with a price and availability quote
Request a Quote »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 bolts with similar characteristics
Nothing similar to this part number was found in our inventory
J644P21A / Bolt,machineWhat is the formal definition of this item?
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. see also screw, cap, hexagon head and screw, machine.
