NPFC - GGG-P-61
PARALLELS; STEEL AND CAST-IRON PRECISION-GROUND
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| Organization: | NPFC |
| Publication Date: | 6 July 1966 |
| Status: | active |
| Page Count: | 7 |
scope:
This specification covers precision-ground, hardened steel, and cast-iron parallels for use in supporting work in inspection, layout, and general machine-shop practice.
This specification does not cover all types of parallels, but only those used most commonly by the Federal Government.
Parallels covered by this specification shall be of the following types, as specified (see 6.2):
I-Solid. II-Ribbed. III-Box. IV-Adjustable.
intended Use:
Types I, II, and III parallels are intended to be used for inspection and layout work or for set-ups on various machine tools.
Type IV parallels are useful as gages in checking the size of... View More
Document History
July 28, 2022
Parallel, Steel and Cast-Iron, Precision Ground
A description is not available for this item.
January 4, 1980
PARALLELS; STEEL AND CAST-IRON PRECISION-GROUND
A description is not available for this item.
January 11, 1968
PARALLELS; STEEL AND CAST-IRON PRECISION-GROUND
A description is not available for this item.
GGG-P-61
July 6, 1966
PARALLELS; STEEL AND CAST-IRON PRECISION-GROUND
This specification covers precision-ground, hardened steel, and cast-iron parallels for use in supporting work in inspection, layout, and general machine-shop practice.
This specification does not...