5305-01-458-4851, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-458-4851

Federal Supply Class:
5305

National Item Identification Number:
014584851

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.

Manufacturer Information:

03A415-5-20L	1W025	NORTHROP GRUMMAN SYSTEMS CORP
125300-5-20L	80539	SPS TECHNOLOGIES, LLC
HR257-5-20L	73197	HI-SHEAR CORPORATION
HR257-5-20L	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC
PBF1570-5-20L	27624	SPS TECHNOLOGIES LLC

Techincal Specification:

COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	1.817 INCHES MINIMUM AND 1.847 INCHES MAXIMUM
GRIP DIAMETER	0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
GRIP LENGTH	1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM
HEAD DIAMETER	0.573 INCHES MINIMUM AND 0.630 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	SMD 584 NATIONAL SPEC 15TH MATERIAL RESPONSE OVERALL
MATERIAL	COBALT COMP MP-35-N OVERALL
MINIMUM TENSILE STRENGTH	132000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.312 INCHES
SPECIAL FEATURES	DRY FILM LUBE-THREADS ONLY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.532 INCHES MINIMUM AND 0.582 INCHES MAXIMUM
THREAD QUANTITY PER INCH	24
THREAD SERIES DESIGNATOR	UNJF

Click here to Register for Free 30-day Trial