Serving our customers with quality and safety first.
3a
RIGHT-Hand
0.444in. and 0.494in. ⁓1/2"
1.454in. and 1.484in. ⁓1-31/64"
flat countersunk
0.464in. and 0.507in.
0.280in. first shoulder and 0.281in. first shoulder
0.879in. first shoulder and 0.899in. first shoulder
HIGH-Torque
0.250in. ⁓1/4"
28
160000 pounds per square inch
36.0 rockwell c and 40.0 rockwell c
100.0 degrees
round first shoulder
steel comp 4140 or steel comp E4340 or steel comp 6150 or steel comp 8740 or steel comp 4130 or steel comp 8735
MIL-S-5626 mil spec 1st material response or MIL-S-5000 mil spec 2nd material response or MIL-S-8503 mil spec 3rd material response or MIL-S-6049 mil spec 4th material response or MIL-S-6758 mil spec 5th material response or MIL-S-6098 mil spec 6th material response
cadmium and chromate
QQ-P-416, ty 2, cl 2 fed spec all treatment responses
unjf
80205-NAS1604 professional/industrial association standard
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes bolt, internal wrenching and screw, cap, socket head.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
Precious metal content is unknown
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction 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.