The MS21921-4D nut is a high-strength fastener designed for secure assembly in aerospace, military, and industrial applications. It provides reliable thread engagement and corrosion resistance, ensuring durability in demanding environments. This nut is essential for maintaining structural integrity in critical fastening 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:
56213
note-Industry Standards/Certification:
MIL-S-8879|MS21921
spec-Dimension H:
0.562"
spec-Dimension A:
0.72"
spec-Dimension B:
0.18"
spec-Dimension C:
0.552"
spec-Dimension B Tolerance:
0.01"
spec-Dimension A Tolerance:
0.01"
spec-Tube Outside Diameter:
1/4"
spec-Thread T (MIL-S-8879):
0.4375"-20
spec-Diameter C Tolerance:
-000|+0.005"
spec-Alternate Part Number:
Possible
spec-NSN:
4730-00-555-8203|4730-01-254-9841
spec-NIIN:
00-555-8203|01-254-9841
hide-Part # Unpunctuated:
MS219214D
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.
