Nas1057 Spacers [exclusive] May 2026

This request is slightly ambiguous, as refers to a specific aerospace fastener standard (for bolts and screws, typically with a tension head or reduced hex), not a spacer.

However, in aerospace engineering, “spacers” used alongside NAS1057 bolts are often series (hexagonal standoffs/spacers) or custom NAS1066 / NAS1067 (bushings and sleeves). nas1057 spacers

for slip fit. Example:

| NAS1057 Dash | Bolt Dia (in) | Recommended NAS43 Spacer ID (in) | |--------------|---------------|----------------------------------| | -3 (3/16”) | 0.1875 | 0.189 – 0.191 | | -4 (1/4”) | 0.2500 | 0.252 – 0.254 | | -5 (5/16”) | 0.3125 | 0.314 – 0.316 | | -6 (3/8”) | 0.3750 | 0.377 – 0.379 | | -8 (1/2”) | 0.5000 | 0.502 – 0.504 | ⚠️ NAS43 spacers list “for screw size” — always verify actual ID. | NAS1057 Material (typical) | Spacer Material Recommendation | |----------------------------|--------------------------------| | Cadmium-plated alloy steel | CRES 303/304, or cad-plated steel | | Corrosion-resistant steel (CRES) | CRES (passivated) | | 2024-T4 aluminum (rare for NAS1057) | Al 2024 anodized or CRES (with isolation) | This request is slightly ambiguous, as refers to