AMSC N/A FSC 5315
INCH-POUND
OO-K-220C
24 November 2015
SUPERSEDING
OO-K-220B
21 April 1989
FEDERAL SPECI
FICATION
KEY, MACHINE
The Gener
al Services Administration has authorized the use of this federal
specification by all federal agencies.
1. SCOPE AND C
LASSIFICATION
1.1 Scope. This specification covers the requirements for machine keys, except woodruff keys (see
6.1).
1.2 Classification. Machine keys covered by this specification shall be classified by either of the
following (see 6.2).
1.2.1 Classification I. Machine keys covered by this specification shall be of the following types,
styles and grades as specified (see 6.2).
Type I – Gib Head (figure 1).
Type II – Square in cross-section (figure 1).
style 1 – Both ends square
style 2 – Both ends round
style 3 – One end square, other end round
Type III – Rectangular in cross-section, both ends square (figure 1).
Grades
A – Corrosion – Resistant steel
B – Alloy steel
C – Carbon steel
1.2.2 Classification II. MS part number shall be in accordance with associated MS sheet or NASM
standard (see 3.4).
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3 and 4 of this
specification. This section does not include documents cited in other sections of this specification or
recommended for additional information or as examples. While every effort has been made to ensure the
completeness of this list, document users are cautioned that they must meet all specified requirements of
documents cited in sections 3 and 4 of this specification, whether or not they are listed.
Comments, suggestions, or questions on this document should be addressed to DLA Troop Support
- Industrial Hardware Division (ATTN: Code FHTE), 700 Robbins Avenue, Philadelphia, PA 19111-
5096 or email
trpsptspecspa@dla.mil. Since contact information can change, you may want to verify
the currency of this address information using the ASSIST Online database at https://assist.dla.mil .
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