According to Official Guinness Records,
The largest nail sculpture is 14,992 nails, achieved by WAJID ART (India) in Madhya Pradesh, India, on 30 December 2017.The sculpture depicts a 3-D peace symbol completed by Wajid Khan, Mohd. Shibal Al Bilal, Koushlendra Deshmukh, Shradha Sahu, Pavan Patidar, Yash Gupta, Avisha Awasthi, Abdul Qadir, Arvind Soni, Istiyak, and Mohammad Azhar Khan (All India).
For a complete list of 2017 records, please visit 2017 Guinness Records in India.