5305-01-008-5403, SCREW,SHOULDER

National Stock Number:
5305-01-008-5403

Federal Supply Class:
5305

National Item Identification Number:
010085403

Description:
SCREW,SHOULDER

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 IN.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below No. 10 (0.190 IN.) (5 mm) nominal diameter. No. 10 (0.190 IN.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use SCREW, EXTERNALLY RELIEVED BODY. For items with a No. 10 (0.190 IN.) (5 mm) or larger thread diameter without an inserted driver head, use BOLT, SHOULDER. Excludes BOLT, INTERNAL WRENCHING and SCREW, CAP, SOCKET HEAD.

Manufacturer Information:

AS185-1	84256	AVIBANK MFG., INC.
CA27032-3090	29372	HOWMET GLOBAL FASTENING SYSTEMS INC.
GB511DB3090	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	1.250 INCHES
THREAD QUANTITY PER INCH	12
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.779 INCHES NOMINAL
FASTENER LENGTH	4.660 INCHES MINIMUM AND
	4.676 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	GM1010 COMP 4330FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CHROMIUM OVERALL
	CHROMIUM GRIP
	CADMIUM THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-C-320 CLASS 2E FED SPEC SINGLE TREATMENT RESPONSE HEAD
	QQ-C-320 CL 2E FED SPEC SINGLE TREATMENT RESPONSE GRIP
	MIL-C-8837 TY2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE THREADS
HARDNESS RATING	46.0 ROCKWELL C MINIMUM AND
	50.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	220000 POUNDS PER SQUARE INCH
HEAD STYLE	ROUND W/WRENCH FLATS
HEAD DIAMETER	1.855 INCHES MINIMUM AND
	1.875 INCHES MAXIMUM
HEAD HEIGHT	0.490 INCHES NOMINAL
WIDTH BETWEEN FLATS	1.610 INCHES MINIMUM AND
	1.625 INCHES MAXIMUM
INTERNAL DRIVE STYLE	SLOT
SHOULDER SHAPE	ROUND FIRST SHOULDER
SHOULDER DIAMETER	1.499 INCHES NOMINAL FIRST SHOULDER
SHOULDER LENGTH	3.710 INCHES MINIMUM AND
	3.736 INCHES MAXIMUM FIRST SHOULDER
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	4.440 INCHES NOMINAL FIRST HOLE
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES MINIMUM AND
	0.151 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES	RETAINING ELEMENT IN SHANK

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