Specifications include, but are not limited to: 2.2.1 31050-100-000 Elbow, 90 Degrees Cast Aluminum, ASTM Spec., B-26, T.B.E., 1-1/2 diameter NPT Cast Aluminum, Serrated one side. Per ASTM Spec. B-26, Alloy 356-T6, 1-1/2 diameter NPT. 2.2.2 31050-100-001 Nipple 2 ½” long, ASTM Spec. B-221 Schedule 80 straight threaded full length 1 ½” diameter, Alloy 6063-T6; ASTM Spec B221 2.2.3 31050-100-056 Nipple 2” long, ASTM Spec. B-221 Schedule 80 straight threaded full length 1 ½” diameter, Alloy 6063-T-6; ASTM Spec B221 2.2.4 31050-100-002 Nipple 6” long, ASTM Spec. B-221 Schedule 40; 1 ½” diameter, threaded both ends Alloy 6063-T-6; 2.2.5 31050-100-003 Nipple 8” long ASTM Spec. B-221 Schedule 40; threaded both ends; 1 1/2” diameter, Alloy 6063-T-6; 2.2.6 31050-100-005-00 Center Pipe 12” long ASTM Spec. B-221, Schedule 80 threaded both ends; 1 ½” diameter, 2 ½” of threaded on one end and 1 ½” of thread on the other end. Alloy 6063 T-6 2.2.7 31050-100-005 Center Pipe 38” long ASTM Spec. B-221 Schedule 80 threaded both ends; 1 ½” diameter, 2 ½” of thread on one end and 1 ½” of thread on the other end. Alloy 6063 T-6 2.2.8 31050-100-004 Center Pipe 48” long ASTM Spec. B-221 Schedule 80; threaded both ends; 1 ½” diameter, 2 ½” of thread on one end and 1 ½” of thread on the other end. Alloy 6063 T-6 2.2.9 31050-100-007 Slipfitter for “c” Post aluminum alloy, ASTM 356-T6 Conforming to Department of Streets Drawing #110-97; (Drawing attached- Drawing 4) 2.2.10 31050-100-008 U-Bolt for Signal Mounting 3/8” x 4 ½”, at least 1” threaded with two nuts and two flat washers. Material: steel, zinc plated; Traffic Parts Inc #7292X for reference