MIL-N-21337
10 APRIL 1968
MILITARY
SPECIFICATION
N U T S , PLAIN,
ROUND,
RETAINING,
BALL
AND
ROLLER
BEARINGS
This specification has been approved by the Department of Defense and is man-
datory for use by the Department of the Army, the Navy, and the Air Force.
2.1 The following specification, stand-
1. SCOPE
ards, and publications, of the issue in effect
on date of invitation for bids, form a part
1.1 Scope. This specification covers pro-
of this specification:
curement requirement for slotted retain-
ing round plain nuts for use in assemblies
SPECIFICATIONS
with ball and roller bearings.
FEDERAL
1.2 Classification. The nuts shall be of the
--Plating, Cadmium
following types and classes as specified (see
QQ-P-416
6.2):
(Electrodeposited).
-- Zinc Plating (Elec-
QQ-Z-325
Types:
trodeposited).
Type I -- Regular series
-- Tape; Paper, Gum-
UU-T-116
Class 1 -- Carbon steel
med, Water-resist-
(plain)
ant.
Class 2 -- Carbon steel
---- Boxes; Folding, Pa-
PPP-B-566
(zinc-plated)
perboard.
Class 3 -- Carbon steel
- Boxes; Wood, Wire-
PPP-B-585
(cadmium plated)
bound.
Class 4 -- Corrosion resisting
-- Boxes; Fiberboard,
steel (passivated)
PPP-B-591
Wood-Cleated (for
Type II -- Light series
Domestic Ship
ment).
Class 1 -- Alloy steel
(phosphate coated)
---- Boxes; Wood, Cleat-
PPP-B-601
ed-plywood.
2. APPLICABLE DOCUMENTS
FSC
3110