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Page Title:
Breaking strength of the lanyards |
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|  STANDARDS
Federal
Stitches, Seams, and Stitchings
FED-STD-751
Military
Sampling Procedures and Tables for
MIL-STD-105
Inspection by Attributes
Markings for Shipment and Storage
MIL-STD-129
DRAWINGS
Naval Air Systems Command
Handle, Beaded, Inflation Assembly
975AS121
(Copies of specifications, standards, drawings, and publications
required by contractors in connection with specific acquisition
functions should be obtained from the acquiring activity or as
directed by the contracting officer.)
REQUIREMENTS
3.
First article. When specified (see 6.2), the
301
contractor shall furnish sample units for first article inspection
and approval (see 4.3 and 6.3),
Materials and components. Materials and compo-
3.2
nents shall conform to the applicable specifications and drawings as
listed or required herein.
Design and construction. The beaded handles
3.3
shall be constructed in accordance with NAVAIR Drawing 975AS121.
Stitching. All the machine stitching shall be
3.3.1
accomplished with Stitch Type 301 of FED-STD-751. There shall be
eight to ten stitches per inch. Unless otherwise specified, the
ends of the stitching shall be backstitched by overlapping on
itself, a minimum of 1/2 inch. Thread breaks shall be backstitched,
back of the break, a minimum of 1/2 inch. The thread tension shall
be maintained so that there shall not be any loose or tight
stitching and the lock shall be embedded in the materials sewn
together. All the thread ends shall be trimmed to a length of 1/4
to 3/8 inch.
Breaking strength of the lanyards. When tested
3.4
as specified in 4.5.3, the lanyards breaking strength shall conform
to Table III.
Workmanship, The beaded handle shall be uniform
3.5
in quality and free from defects and irregularities which could
adversely affect performance, reliability or durability.
2
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