NSN 5305-01-265-8955
High Torque Screw
Internal drive ribbed.
Manufacturer part number 123256-5R2512 for national stock number 5305012658955.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-265-8955.
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MPN or Model
123256-5R2512
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Schedule B
7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment) -
NMF (National Motor Freight)
093486 - Bolts, Nuts Or Screws, NOI (sub 3) -
Unit Weight (Est.)
0.1 lb -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
Between 0.228 inches and 0.378 inches -
Fastener Length
Between 1.228 inches and 1.248 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.577 inches and 0.635 inches -
Locking Feature
Detent ball grip -
Grip Diameter
Between 0.3108 inches and 0.317 inches -
Shank Unthreaded Hole Diameter
0.076 inches first hole and 0.086 inches first hole -
Internal Drive Style
Offset cruciform (torque set) -
Thread Diameter
0.312 inches -
Grip Length
Between 0.750 inches and 0.766 inches -
Thready Qty Per Inch (tpi)
24 -
Hardness Rating
36.0 rockwell c and 41.0 rockwell c -
Countersink Angle
Between 99.0 degrees and 101.0 degrees -
Distance From Head Largest Bearing Surface To Shank Hole Center
1.123 inches first hole and 1.138 inches first hole -
Surface Finish
32.0 microinches threads -
Material
Steel comp e4340 fastener or steel comp 4140 fastener or steel comp 8740 fastener or steel comp 4130 fastener or steel comp 6150 fastener -
Material Specification
Ams5643 assn standard 1st material response locking feature or ams5644 assn standard 2nd material response locking feature or qq-s-763 federal specification 3rd material response locking feature -
Surface Treatment
Passivate locking feature -
Surface Treatment Specification
Qq-p-416 ty2 cl2 federal specification single treatment response fastener -
Thread Series Designator
Unjf
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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.
Pricing and Availability
Get a quote for 5305-01-265-8955 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
123256-5R2512 | Sps Technologies, Llc |
AS303-25-12 | Avibank Mfg., Inc. |
LE111-0044-2512 | Boeing Company, The |