NSN 5305-01-337-0359
High Torque Screw
Red dye or paint on thread end before lubrication.
Manufacturer part number BACB30MS4R18 for national stock number 5305013370359.
Datasheet
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Product description
Close Tolerance Screw NSN 5305-01-337-0359.
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MPN or Model
BACB30MS4R18
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Schedule B
8109.90.0000 (Zirconium and articles thereof nesoi) -
NMF (National Motor Freight)
096640 - Screws, Iron Or Steel -
Thread Class
3a -
Thread Direction
Right-hand -
Thread Length
0.425 inches -
Fastener Length
Between 1.535 inches and 1.565 inches -
Head Style
Flat countersunk -
Head Diameter
Between 0.465 inches and 0.510 inches -
Grip Diameter
Between 0.2485 inches and 0.2495 inches -
Internal Drive Style
High-torque -
Thread Diameter
0.250 inches -
Grip Length
Between 1.115 inches and 1.135 inches -
Features Provided
Cetyl alcohol lubricant -
Thready Qty Per Inch (tpi)
28 -
Countersink Angle
Between 99.0 degrees and 101.0 degrees -
Surface Finish
63.0 microinches bearing surface of head -
Material
Titanium alloy uns r56400 -
Material Specification
Ams 4928 assn standard single material response or ams 4967 assn standard single material response -
Surface Treatment
Phosphate -
Surface Treatment Specification
Bac 5861, cage81205 mfr ref single treatment response -
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.
![Mechanic Bill explains High Torque Screw](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 5305-01-337-0359 close tolerance screwManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
---|---|
BACB30MS4R18 | Huck International, Inc. |
BACB30MS4R18 | The Boeing Company |
BACB30MS4R18 | Arconic Global Fasteners & Rings, |
BACB30MS4R18 | Mount St. Joseph University |
BACB30MS4R18 | Sps Technologies, Llc |
BACB30MS4R18 | Hi-shear Corporation |
BACB30MS4R18 | Lisi Aerospace Canada Corp |
BACB30MS4R18 | Sps Technologies Inc |
BACB30MS4R18 | Huck Intl Inc |
BACB30MS4R18 | Sps Technologies, Llc |
BACB30MS4R18 | Alcoa Global Fasteners, Inc. |
Stock Check
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