M7928/5-2, 323975 TE Connectivity (also known as AMP), Mil Spec Window Splice. 323975 is a high quality closed barrel splice. The unique “window" feature within splice assists in wire splice inspection. 323975 is suitable for crimping to 24-20 AWG wire and is mil qualified to M7928/5-2. Clear insulation sleeve. We buy these in volume and therefore can offer you this special price. Also known as NAS1388-4.