Product Details | SHOULDER SCREW

5305-01-268-5953 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.

Part Alternates: HT4020618X, HT4020-6-18X, 5305-01-268-5953, 01-268-5953, 5305012685953, 012685953

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 04 DEC 1987 01-268-5953

Drawings & Photos | NSN 5305-01-268-5953


Cross Reference | NSN 5305-01-268-5953

Part Number Cage Code Manufacturer
HT4020-6-18X 73197 HI-SHEAR CORPORATION
HT4020-6-18X 80539 SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
HT4020-6-18X 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
HT4020-6-18X L4528 LISI AEROSPACE CANADA CORP

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Technical Data | NSN 5305-01-268-5953

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.375 INCHES
THREAD QUANTITY PER INCH 24
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.641 INCHES NOMINAL
FASTENER LENGTH 1.750 INCHES MINIMUM AND 1.797 INCHES MAXIMUM
MATERIAL STEEL COMP XM-13 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEAD STYLE C51 FLAT COUNTERSUNK UNDERCUT
HEAD DIAMETER 0.692 INCHES MINIMUM AND 0.763 INCHES MAXIMUM
HEAD HEIGHT 0.109 INCHES MINIMUM AND 0.111 INCHES MAXIMUM
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE D9 HIGH-TORQUE
SHOULDER SHAPE ROUND FIRST SHOULDER
SHOULDER DIAMETER 0.389 INCHES MINIMUM AND 0.390 INCHES MAXIMUM FIRST SHOULDER
SHOULDER LENGTH 1.014 INCHES MINIMUM AND 1.016 INCHES MAXIMUM FIRST SHOULDER

Restrictions/Controls & Freight Information | NSN 5305-01-268-5953

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information