BOEING COMPANY, THE | 43999 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.671 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
FASTENER LENGTH | 0.735 INCHES MINIMUM AND 0.782 INCHES MAXIMUM |
HEAD STYLE | ROUND |
HEAD DIAMETER | 0.264 INCHES MINIMUM AND 0.276 INCHES MAXIMUM |
HEAD HEIGHT | 0.074 INCHES MINIMUM AND 0.086 INCHES MAXIMUM |
INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
NOMINAL THREAD DIAMETER | 0.138 INCHES |
THREAD QUANTITY PER INCH | 32 |
SCREW MATERIAL | STEEL COMP 384 |
SCREW MATERIAL DOCUMENT AND CLASSIFICATION | CARPENTER NO. 10 FSCM 71321 MFR REF SINGLE MATERIAL RESPONSE |
SCREW SURFACE TREATMENT | PASSIVATE |
SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
THREAD SERIES DESIGNATOR | UNC |
An externally threaded fastener whose threaded portion is of one nominal diameter, No ( . 6 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 1 ( .19 in./5 mm). No. 1 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD. |