Shear pins are used to prevent premature separation of the nose cone from the rocket prior to ejection. These threaded nylon screws are easy to install, and are the standard for high power flyers.
Shear pins Rocketry Forum - Model Rocketry Forums
MTD Genuine Factory Parts Original Equipment 1-1/2 in. Shear Pins for All Troy-Bilt Two Stage Snow Blowers (Set of 4) OEM-738-04124 - The Home Depot
Dino Chutes Deployment Bag 4x7
Aluminum 2-56 Tube Fasteners (3/pk)
Small Parts 25C150HCSN Hex Head Screw, Nylon, External Hex, 1/4-20 Thread Size, 1.5 Long (Pack of 100) : Industrial & Scientific
Small Nylon Shear Pins - 20 pack
M2 Nylon Screws - Shear Pins - 10 Pack - LOC Precision – LOC Precision / Public Missiles Ltd.
T Head Pins ( 100 Packs ), T-pins
Large 4-40 Nylon Shear Pins - 20 pack
SpeedFreakCNC 20pcs Auger Shear Pins Bolts & Nuts Honda Compatible HS1132 HS624 HS828 HS928 HS724 & New HSS Series 724, 928, 1332 : Patio, Lawn & Garden
M2 Nylon Screws - Shear Pins - 10 Pack - LOC Precision – LOC Precision / Public Missiles Ltd.