National Item Identification Number
01-187-9556
011879556
5305-01-187-9556
5305011879556
National Stock Number
Item Name
SCREW,SHOULDER
Federal Supply Class
5305
Description
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.
Commercial and Government Entity Code (Supplier Data)
05055
DIVERSIFIED AEROSPACE SERVICES LLC
DBA LLOYD AIRCRAFT COMPANY
5914 WOODMEADOW DRIVE
ARLINGTON
TX
76016
817-498-5813
19451
PERINE MACHINE TOOL CORP
18858 72ND AVE S
KENT
WA
98032
425-251-5483
Reference Numbers (Part Numbers)
1/4-20-2A X 3/4 CAD PL ST SHLD
1/4-20-2A X 3/4 CAD PL ST SHLD
Required Categories
THREAD SERIES DESIGNATOR
NOMINAL THREAD DIAMETER
THREAD QUANTITY PER INCH
THR
Required Description
UNC
0.250 INCHES
20
2A
RIGHT-HAND
0.438 INCHES NOMINAL
0.750 INCHES NOMINA