77018-524
Extended Washer Self-Locking Nut
This page provides complete and verified information for part number 77018-524, NSN 5310-00-395-4323
You’ll find detailed technical specifications, product attributes, condition classification, and real-time stock availability. All data is based on official records and meets industry standards for defense, aerospace, and industrial sourcing. Whether you’re performing a parts audit, validating compliance, or preparing a purchase order, this part listing supports accurate and efficient procurement.
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-00-395-4323
Item Name Code
29729
Assigment Date
04/12/1974 (52 years ago)
0.532 inches maximum washer outside diameter, prevailing torque all metal design locking feature, 3b thread class, dry film lubricant lubrication, right-hand thread direction
Characteristics
Below are the official specifications and performance details for this part, including technical data, material composition, and compliance information.
- Thread Class
- 3b
- Thread Direction
- right-hand
- Locking Feature
- prevailing torque all metal design
- Washer Outside Diameter
- 0.532 inches maximum
- Lubrication
- dry film lubricant
- Overall Height
- 0.312 inches maximum
- Nut Style
- double hexagon
- Washer Thickness
- 0.035 inches minimum
- Width Across Flats
- 0.367 inches minimum and 0.376 inches maximum
- Thread Series
- unjf
- Thread Quantity Per Inch
- 24
- Nominal Thread Size
- 0.312 inches
- Material
- nickel alloy 718 overall
- Material Document And Classification
- ams 5662 assn std 1st material response or ams 5663 assn std 1st material response overall
- Surface Treatment
- copper overall
- Surface Treatment Document And Classification
- mil-c-14550 mil spec single treatment response overall
Classification Data
Detailed NSN information including identification codes, classification data, and key indicators used for cataloging, logistics, and supply management.
- Type of Item Identification
- Demilitarization
- Criticality
- Federal Item Identification Guide
- Precious Metals Indicator
- Pseudo Item Name Code
- Hazardous Material Indicator
- Schedule B Code
- 1 - Full descriptive item identification
- A - Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
- X - The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
- A021A0
- U - Precious metal content is unknown
- 0029729
- N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
- 7508900000
Freight Information
Comprehensive freight classifications, shipping codes, and handling specifications for domestic and international transport compliance.
- Major Organizational Entity
- National Motor Freight Classification Item Number
- National Motor Freight Classification Sub-Item Number
- Uniform Freight Classification Item Number
- National Motor Freight Class Rating
- Water Commodity
- Type of Cargo
- Special Hand
- Air Dimension
- Air Commodity
- National Motor Freight Description
- KZ
- 093486
- Z
- 48950
- W - Rating variable
- 573 - Bolts or nuts (iron or steel),(less than 35 feet)
- Z - No special type of cargo code applicable
- 9 - Other or no special handling required (sh)
- A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
- BZ -
- bolts,nuts or screws, noi (sub 3)
FAQs
Get insights on installation procedures, operating conditions, care instructions, industry regulations, and common issues. FAQs below provide key information for 77018-524
What is the FSCG of the NSN 5310-00-395-4323?
The FSCG of the NSN 5310-00-395-4323 is 5310
Does the NSN 5310-00-395-4323 have a Schedule B code assigned?
Yes, the Schedule B code is 7508900000
Does NSN 5310-00-395-4323 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5310-00-395-4323 contain precious materials?
Precious metal content is unknown
Does NSN 5310-00-395-4323 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5310-00-395-4323 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Fri, Apr 12, 1974
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Price & Availability
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Ready to Ship
This item is in stock and ready to ship. Available units may vary in condition (new, surplus, refurbished) and are stored across multiple verified facilities. Request a quote to confirm quantity and lead time.
| New Surplus | 2 |
| New Material | 126 |
| New Surplus | 2 |
| New Material | 324 |
| Total | 454 |
Availability of this item was last updated on:
06/15/2026 10:06 PM EDT.
Stock levels and pricing are subject to change.
