Ball locking bolts according to NASM (old standard: MS) are used for quick fixing, locking, adjusting, changing and securing. Quick and easy release for frequent repetitive connections The ball lock pins (quick release pins/ball lock pins) are manufactured to aviation standard NASM (old standard: MS) and tested according to NAS 1332. Material bolts, stainless steel, precipitation hardened, passivated pressure bolts, stainless steel, precision-hardened, passivated spring, stainless steel, passivated handle, aluminium, black anodised, mounting ring, stainless steel, passivated ball, stainless steel, excretion hardened, passivated operation, by pressing the button, the balls are unlocked. Notes: Special design on request. All other sizes are available on request. This product is made in INCH dimensions. References. A conversion table can be found in the technical appendix.