The Countersunk Finishing Washer NAS391B4P is designed to provide a clean, flush finish for fasteners in various industrial applications. It is commonly used in machinery assembly, electronic enclosures, and automotive manufacturing to ensure secure fastening and a professional appearance. Its precise design helps distribute load evenly and prevent damage to the surrounding material during installation.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-Asset:
1466P
hide-Quantity Increment:
1
note-Sold In:
EA
note-Units Per Package:
1
note-Note:
Our inventory is extensive. The majority of the items listed in our catalog are stocked and available for immediate shipment.
hide-ItemID:
61603
spec-Head Type:
Countersunk
note-Industry Standards/Certification:
NAS391
spec-Type:
Interior Finishing Washer
spec-To Fit Diameter:
#4
hide-Pre-Packaged Bag Quantity:
100
spec-NSN:
5310-01-223-8863
spec-NIIN:
01-223-8863
hide-Part # Unpunctuated:
NAS391B4P
note-Minimum Order Note:
Minimum order is 100. 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.
