The MS21921-8D nut is a specialized fastener designed for secure assembly in aerospace, military, and industrial applications. It provides reliable thread engagement and high-performance fastening in demanding environments. Its robust construction ensures durability and safety in critical structural and mechanical systems.This component is manufactured to the applicable MS, AN, or NAS specification, ensuring compliance with recognized military and aerospace dimensional, material, and performance requirements. Material certifications, Certificates of Conformance (CoC), and traceability are available where applicable.
hide-Quantity Increment:
1
note-Sold In:
Per Package
note-Units Per Package:
1
spec-Material:
Aluminum 2024
note-Note:
Our inventory is extensive. The majority of the items listed in our catalog are stocked and available for immediate shipment.
hide-ItemID:
56220
note-Industry Standards/Certification:
MIL-S-8879|MS21921
spec-Dimension H:
7/8"
spec-Dimension A:
0.86"
spec-Dimension B:
0.18"
spec-Dimension C:
0.865"
spec-Dimension B Tolerance:
0.01"
spec-Dimension A Tolerance:
0.01"
spec-Tube Outside Diameter:
1/2"
spec-Thread T (MIL-S-8879):
0.7500"-16
spec-Diameter C Tolerance:
-000|+0.005"
spec-Alternate Part Number:
MS21921-8W
spec-NSN:
4730-01-087-7557
spec-NIIN:
01-087-7557
hide-Part # Unpunctuated:
MS219218D
note-Minimum Order Note:
Minimum order is 5. Must order in increments of 1.
note-Inventory Note:
Need additional stock? Call (877) 920-1876 or email
note-California Residents:
Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.