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Lock Washer Helical: Hi Collar

MS51848-50 carbon steel to MS51848-75 carbon steel

Helical spring lock washer dimensions per MIL-STD-1764 Section 506 — ID (min), OD (max), and section thickness for Regular (MS35338), Extra Duty (MS35340), and Hi-Collar (MS51848) series across bolt sizes #2 through 1-1/2 inch, in carbon steel (cadmium plate) and corrosion-resistant steel (CRES 302, 316, 420); supports bolt joint design, counterbore/clearance sizing, and military/aerospace fastener part selection

Mechanical Engineeringseries: Hi Collar10 rowsPage 3 of 4
seriesrecord idfinishid min in (in)materialms part numbernominal bolt designationnominal bolt size in (in)od max in (in)standardthickness in (in)
Hi CollarMS51848-50 carbon steelCadmium plate0.509Carbon SteelMS51848-501/20.50.873MIL-STD-1764 Section 5060.141
Hi CollarMS51848-50 cres302Passivate0.509CRES 302MS51848-501/20.50.873MIL-STD-1764 Section 5060.141
Hi CollarMS51848-50 cres316Passivate0.509CRES 316MS51848-501/20.50.873MIL-STD-1764 Section 5060.141
Hi CollarMS51848-56 carbon steelCadmium plate0.572Carbon SteelMS51848-569/160.56250.966MIL-STD-1764 Section 5060.156
Hi CollarMS51848-56 cres302Passivate0.572CRES 302MS51848-569/160.56250.966MIL-STD-1764 Section 5060.156
Hi CollarMS51848-62 carbon steelCadmium plate0.636Carbon SteelMS51848-625/80.6251.079MIL-STD-1764 Section 5060.172
Hi CollarMS51848-62 cres302Passivate0.636CRES 302MS51848-625/80.6251.079MIL-STD-1764 Section 5060.172
Hi CollarMS51848-6 carbon steelCadmium plate0.141Carbon SteelMS51848-6#60.1380.25MIL-STD-1764 Section 5060.047
Hi CollarMS51848-6 cres302Passivate0.141CRES 302MS51848-6#60.1380.25MIL-STD-1764 Section 5060.047
Hi CollarMS51848-75 carbon steelCadmium plate0.763Carbon SteelMS51848-753/40.751.271MIL-STD-1764 Section 5060.203

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Regular63 rowsExtra Duty59 rows