5305-01-331-7206, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-331-7206

Federal Supply Class:
5305

National Item Identification Number:
013317206

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:

03A225-4-11A	1W025	NORTHROP GRUMMAN SYSTEMS CORP
03A225-4-11A	76823	NORTHROP GRUMMAN SYSTEMS CORPORATION
AIC1700-4-11A	06725	SPS TECHNOLOGIES, LLC
DF33001VA-4T-11	0HDW7	HUCK INTERNATIONAL, INC.
123992-4-11A	0PTK6	SPS TECHNOLOGIES INC
123992-4-11A	80539	SPS TECHNOLOGIES, LLC
SC5027-4-11A	06950	HOWMET GLOBAL FASTENING SYSTEMS INC
SLB212-4-11A	16258	SPACE-LOK, INC.
PBF1484-4-11A	27624	SPS TECHNOLOGIES LLC
HR246-4-11A	73197	HI-SHEAR CORPORATION
DF33001VA-4T-11	97928	HUCK INTL INC
HR246-4-11A	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC

Techincal Specification:

COUNTERSINK ANGLE	129.0 DEGREES MINIMUM AND 129.0 DEGREES MINIMUM AND 131.0 DEGREES MAXIMUM131.0 DEGREES MAXIMUM
FASTENER LENGTH	1.076 INCHES MINIMUM AND 1.076 INCHES MINIMUM AND 1.106 INCHES MAXIMUM1.106 INCHES MAXIMUM
GRIP DIAMETER	0.2485 INCHES MINIMUM AND 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM0.2495 INCHES MAXIMUM
GRIP LENGTH	0.678 INCHES MINIMUM AND 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM0.698 INCHES MAXIMUM
HEAD DIAMETER	0.5026 INCHES MINIMUM AND 0.5026 INCHES MINIMUM AND 0.5111 INCHES MAXIMUM0.5111 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNKFLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	TITANIUM ALLOY UNS R56400 OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES0.250 INCHES
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	NAS 4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALLNAS 4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ALUMINUM OVERALLALUMINUM OVERALL
THREAD CLASS	3A3A
THREAD DIRECTION	RIGHT-HANDRIGHT-HAND
THREAD LENGTH	0.403 INCHES NOMINAL0.403 INCHES NOMINAL
THREAD QUANTITY PER INCH	2828
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF)

Click here to Register for Free 30-day Trial