| REID PRODUCTS INC. | 59563 |
| BOEING COMPANY, THE | 76301 |
| SPS TECHNOLOGIES INC | 0PTK6 |
| HUCK INTERNATIONAL, INC. | 17446 |
| SPS TECHNOLOGIES, LLC | 56878 |
| ARCONIC GLOBAL FASTENERS & RINGS, INC. | 5R793 |
| HI-SHEAR CORPORATION | 73197 |
| SPS TECHNOLOGIES, LLC | 80539 |
| ALCOA GLOBAL FASTENERS, INC. | 92215 |
| HUCK INTL INC | 97928 |
| SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | K5673 |
| LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | L4528 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM |
| FASTENER LENGTH | 2.454 INCHES MINIMUM AND 2.484 INCHES MAXIMUM |
| HEAD STYLE | OVAL COUNTERSUNK |
| HEAD DIAMETER | 0.3898 INCHES MINIMUM AND 0.3948 INCHES MAXIMUM |
| GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | HIGH-TORQUE |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| GRIP LENGTH | 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| COUNTERSINK ANGLE | 101.0 DEGREES NOMINAL |
| MATERIAL | STEEL COMP XM-13 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ALUMINUM OVERALL AND CHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488 TY 2 CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD SERIES DESIGNATOR | 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 ( . 1 IN.) ( . 25 mm) or less of a specific diameter for items (1. IN.) (25 mm) or less in diameter. Items over (1. IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths ( . 15 IN.) ( . 38 mm) or less. The nominal major diameter of the threads shall be at least one thousandth ( . 1 IN.) ( . 25 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. |
