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Worldwide distributor of NSN parts and consumables located in the USA.

Close Tolerance Screw

Model / MPN: 121672-5-10 | NSN: 5305-01-626-8200
ITAR Registered seal

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 major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the shank diameter, but not below the major diameter for applicable class of fit, as shown in the screw thread standards, federal standard 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.

Product Details
NATO Stock Number
5305-01-626-8200
Sold in multiples of
1 EA
DEMIL
Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.337 inches and 0.368 inches
Fastener Length
1.113 inches
Head Style
Oval countersunk
Head Diameter
0.577 inches
Locking Feature
Retainer ring
Grip Diameter
Between 0.3108 inches and 0.3117 inches
Shank Unthreaded Hole Diameter
0.076 inches and 0.086 inches
Internal Drive Style
High-torque
End Application
F-15sa
Thread Diameter
0.3125 inches
Grip Length
0.625 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
7510 pounds per square inch
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
1.008 inches
Surface Finish
63.0 microinches bearing surface of head
Surface Finish
63.0 microinches grip
Part Name Assigned By Controlling Agency
Bolt, self-retaining, impedence type, flush head, 450 degrees f, 95 ksi fsu
Material
Steel comp 630 ring
Material
Steel comp 4140
Material Specification
Ams5643 federal specification single material response ring
Surface Treatment
Cadmium
Surface Treatment
Passivate ring
Surface Treatment Specification
Qq-p-35 federal standard single treatment response ring
Surface Treatment Specification
Qq-p-416, type ii, class 2 federal standard single treatment response
Thread Series Designator
Unjf

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121672-5-10 Cross Reference
  • ST3M736-5-10