NSN 5305-01-261-1899
High Torque Screw
0.0156 in. Oversize shank for repair work only.
Manufacturer part number 51B334-12X for national stock number 5305012611899.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-261-1899.
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MPN or Model
51B334-12X
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Schedule B
7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment) -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
Between 0.306 inches and 0.326 inches -
Fastener Length
Between 1.056 inches and 1.076 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.499 inches and 0.507 inches -
Grip Diameter
Between 0.264 inches and 0.265 inches -
Internal Drive Style
Offset cruciform (torque set) -
Thread Diameter
0.250 inches -
Grip Length
Between 0.740 inches and 0.760 inches -
Thready Qty Per Inch (tpi)
28 -
Countersink Angle
100.0 degrees -
Material
Steel comp 4340 or steel comp 4140 or steel comp 8740 -
Material Specification
Mil-s-5000 military specification 1st material response or mil-s-5626 military specification 2nd material response or mil-s-6049 military specification 3rd material response -
Surface Treatment
Chromium -
Surface Treatment Specification
Qq-p-416, type 2, class 2 federal specification single treatment response -
Thread Series Designator
Unjc
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A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
![Mechanic Bill explains High Torque Screw](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 5305-01-261-1899 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
51B334-12X | Northrop Grumman Technical Services, |
51B334-12X | Sps Technologies, Llc |
51B334-12X | Arconic Global Fasteners & Rings, |
51B334-12X | Sps Technologies, Llc |
51B334-12X | Hi-shear Corporation |
51B334-12X | Sps Technologies, Llc |
51B334-12X | Alcoa Global Fasteners, Inc. |
51B334-12X | Lisi Aerospace Canada Corp |
51B334-12X | Northrop Grumman Systems Corporation |
Stock Check
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