GGG-D-777b
October 31, 1966
SUPERSEDING
Fed. Spec. GGG-D-777a
August 14, 1958
FEDERAL SPECIFICATION
DRIVER, PROJECTILE UNIT, POWDER ACTUATED (HIGH VELOCITY) (ABOVE
WATER ONLY); PIN, DRIVE, POWDER ACTUATED; AND CARTRIDGE, POWDER
ACTUATED TOOL
This specification was approved by the Commissioner, Federal Service, General
Services Administration, for the use of Federal agencies.
1. SCOPE AND CLASSIFICATION
1.1 Scope. This specification covers powder actuated projectile unit
driver, drive pins, and power loads, for use above water only.
1.1.1 Federal specification coverage. Federal specifications do not cover
all varieties of the commodity indicated by the titles of the specifications,
but include only those generally used by the Federal Government.
1.2 Classification. Drivers, drive pins, and power loads shall be of the
following classification.
1.2.1 Drivers. The drivers shall be of the following classes and styles
as specified (see 6.2):
Class 1--1/4-inch barrel, full duty.
Class 2--3/8-inch barrel, full duty.
Class 3--1/4 and 3/8-inch interchangeable barrels.
Style A--Full duty, both barrels
Style B--Full duty, except 3/8-inch barrel not required to drive
fasteners with shank diameter of 1/4-inch into steel above 3/8-inch
thickness.
Class 4--Drivers with safety attachments to arrest free flight of
drive pins.
Style A--Round barrel 1/4-inch drive pins.
Style B--Square barrel 1/4 and 3/8-inch drive pins.
1.2.2 Drive pins. Drive pins shall be of the following sizes and styles
as specified (see 6.2):
Size 1/4-inch drive pins shall be of the following styles:
Style A--Drive pin for steel.
Style B--Drive pin for concrete.
Style C--Drive stud, external threaded for steel.
Style D--Drive stud, external threaded for concrete.
Style E--Drive stud, flush internal threaded for concrete.
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