NSN 5305-00-548-5077
High Torque Screw
Between 0.862 inches and 0.909 inches fastener length, flat countersunk head style, between 0.390 inches and 0.395 inches head diameter, grip diameter: between 0.2485 inches and 0.2495 inches .
Manufacturer part number 51B581-4-9 for national stock number 5305005485077.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-00-548-5077.
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MPN or Model
51B581-4-9
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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) -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
Between 0.290 inches and 0.357 inches -
Fastener Length
Between 0.862 inches and 0.909 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.390 inches and 0.395 inches -
Grip Diameter
Between 0.2485 inches and 0.2495 inches -
Shank Unthreaded Hole Diameter
0.076 inches first hole -
Internal Drive Style
Offset cruciform (torque set) -
Thread Diameter
0.250 inches -
Grip Length
Between 0.552 inches and 0.572 inches -
Thready Qty Per Inch (tpi)
28 -
Min. Tensile Strength (psi)
180000 pounds per square inch -
Hardness Rating
39.0 rockwell c and 43.0 rockwell c -
Countersink Angle
100.0 degrees -
Distance From Head Largest Bearing Surface To Shank Hole Center
0.736 inches first hole and 0.803 inches first hole -
Surface Finish
32.0 microinches grip -
Material
Steel comp 4340 or steel comp 4140 or steel comp 8740 -
Surface Treatment
Cadmium and chromate -
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response -
Thread Series Designator
Unjf -
Specification Data
76823-51b581 manufacturers standard
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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 5305-00-548-5077 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
51B581-4-9 | Northrop Grumman Systems Corporation |
51B581-4-9H | Northrop Grumman Technical Services, |
51B581-4-9H | Northrop Grumman Systems Corporation |
51B581-4-9H | Arconic Global Fasteners & Rings, |
51B581-4-9H | Sps Technologies, Llc |
51B581-4-9H | Sps Technologies, Llc |
51B581-4-9H | Northrop Grumman Corp |
51B581-4-9H | Hi-shear Corporation |
51B581-4-9H | Sps Technologies, Llc |
51B581-4-9H | Lisi Aerospace Canada Corp |