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National Stock Number:
5305-01-033-2664
Federal Supply Class:
5305
National Item Identification Number:
010332664
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:
| S63108-3 | 12511 | SIMMONDS PRECISION PRODUCTS INC |
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Techincal Specification:
| FASTENER LENGTH | 0.400 INCHES NOMINAL | | GRIP LENGTH | 0.180 INCHES NOMINAL | | GRIP DIAMETER | 0.0860 INCHES MINIMUM AND 0.0870 INCHES MAXIMUM | | HEAD DIAMETER | 0.155 INCHES MINIMUM AND 0.169 INCHES MAXIMUM | | HEAD HEIGHT | 0.045 INCHES MINIMUM AND 0.053 INCHES MAXIMUM | | HEAD STYLE | PAN NO. 2 | | INTERNAL DRIVE STYLE | SLOT | | LOCKING FEATURE | PATCH OR PELLET THREADS | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE FASTENER | | MATERIAL | PLASTIC LOCKING FEATURE | | MATERIAL | STEEL COMP 304 FASTENER | | NOMINAL THREAD DIAMETER | 0.086 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NS177 FSCM 12511 MFR REF SINGLE TREATMENT RESPONSE FASTENER | | SURFACE TREATMENT | PASSIVATE FASTENER | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 56 | | THREAD SERIES DESIGNATOR | UNC |
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