A 5/8” (0.625) outer diameter compression spring has an outer diameter of 0.625 inches and may have a free length between 9/32 (0.281) of an inch to 15 inches. You will find them in stock compression spring catalogs where you may buy ready-made springs.
Everbilt 3.625 in. x 0.562 in. x 0.072 in. Extended Hook Extension Spring 856268 - The Home Depot
JONMON 200Pcs Spring Assortment - 20 Sizes Mechanical Compression Springs & Extension Spring Assorted for Shops and Home Repairs Replacement Kit : : Tools & Home Improvement
: Industrial & Scientific
Compression Spring, Stainless Steel, Metric, 68 mm OD, 5 mm Wire Size, 32.31 mm Compressed Length, 120 mm Free Length, 518.71 N Load Capacity, 6.06
Hardware Spring Pressure Spring Wire Diameter 0.8mm Stainless Steel Compression Spring Outer Diameter 6mm Pressure Spring Length 5mm-305mm (Length : 15mm 10pcs) : Industrial & Scientific
0.072 wire diameter
CENTURY SPRING C-706 Compression Spring (2 Pack), 9/16 x 1 3/8
Compression Springs - MSC Industrial Supply
Drag Racing Coil Springs and Accessories
5/8 (0.625 inches) OD Compression Springs Compression Spring Over 70 Trillion spring designs
Find Compression Spring: 9/16 OD, 1-3/8 Free Length at MSC Industrial Supply, serving the metalworking, safety, and MRO industries for over 75 years
Compression Spring: 9/16 OD, 1-3/8 Free Length
uxcell Compression Spring,304 Stainless Steel,5mm OD,0.5mm Wire Size,15mm Free Length,Silver Tone,10Pcs: : Industrial & Scientific
Understanding Die Springs: A Comprehensive Guide to Selecting, Installing, and Maintaining Springs for Dies, Molds, and Machinery, PDF, Machine Tool