Serving our customers with quality and safety first.
3a
RIGHT-Hand
0.425in. ⁓7/16"
1.3625in. ⁓1-3/8"
fillister countersunk
0.478in. and 0.488in.
0.0769in. and 0.0799in. ⁓3/32"
0.173in. and 0.183in.
0.2490in. and 0.2495in.
torx
B-2
0.2500in. ⁓1/4"
0.9375in.
28
160000 pounds per square inch
100.0 degrees
the screw is special due to the capped material (09A196-2) that is installed on top of the head; the height:head prot 0.0769 min 0.0799 max and width: gage dia 0.4243 min 0.4245 max of the cap material is very critical to the coatings of the aircraft; the fit of the cap material
gray top of head
titanium alloy uns R56400 fastener
cap detail shall be permantly affixed to the bolt
unjf
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.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Item does not contain precious metal.
Represents items with no adp components
The item does not have a nuclear hardened feature but does have other critical feature(s) such as tolerance, fit restrictions or application.
HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.
PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.
ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.
ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.
CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.