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National Stock Number:
5305-01-323-5553
Federal Supply Class:
5305
National Item Identification Number:
013235553
Description:
SCREW,CLOSE TOLERANCE
Detail:
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.
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Manufacturer Information:
| 122966CD4-3 | 80539 | SPS TECHNOLOGIES, LLC | | AM2804C3D | 1FY45 | AERO MECHANICAL FASTENING SYSTEMS INC | | HR217C4-3D | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG | | GB511DU4C3D | 1FY45 | AERO MECHANICAL FASTENING SYSTEMS INC | | GB511DU4C3D | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | GB511DU4C3D | 58845 | ABOUNDING SECURITY INC DIV OF MAA CORP | | SC2174C4-3D | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | PBF1355C4-3D | 27624 | SPS TECHNOLOGIES LLC | | MATP111CD4-3 | 58845 | ABOUNDING SECURITY INC DIV OF MAA CORP | | HR217C4-3D | 73197 | HI-SHEAR CORPORATION | | HR217C4-3D | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.403 INCHES NOMINAL | | FASTENER LENGTH | 0.576 INCHES MINIMUM AND | | 0.606 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | PAN NO. 2 | | HEAD DIAMETER | 0.477 INCHES MINIMUM AND | | 0.492 INCHES MAXIMUM | | HEAD HEIGHT | 0.140 INCHES MINIMUM AND | | 0.150 INCHES MAXIMUM | | INTERNAL DRIVE STYLE | TORQUE-SET RIBBED | | GRIP LENGTH | 0.178 INCHES MINIMUM AND | | 0.198 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.465 INCHES MINIMUM AND | | 0.485 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND | | 0.086 INCHES MAXIMUM FIRST HOLE | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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