M-LOK T-Nut Replacement Set 10-Pack for AR 15 – ohhunt
Amazon.com: NGe M8 x 10mm T-Nuts, 4-Prong Tee Nut Fasteners, Pronged Tee Nut for Wooden Furniture and Climbing Hold, Pack of 100 : Industrial & Scientific
F13037Z ROLL IN T-NUT W/ BALL SPRING SA 1/4-20 SLOT 8 ZINC PLATED STEEL
T-Nuts
POWERTEC 5/16 in.-18 Screw-On Tee Nut (8-Pack) QTN1108 - The Home Depot
13040 | 5/16-18 Self-Aligning Roll-in T-Nut with Ball Spring