Verified recordStandard · AN (Aeronautical Standards Group, CAGE 88044)Updated 2026-09-14
AN525-10R28
The '525' designates a washer head machine screw, typically made from alloy steel with a minimum tensile strength of 125,000 PSI. The '10R28' specifies the screw's thread size and length. '10' indicates a #10-32 UNF thread, and 'R28' denotes a length of approximately 1-3/4 inches (or 1-25/32 inches) and a grip length of approximately 1-11/32 inches (or 1-5/16 inches). AN identifies a US Air Force-Navy Aeronautical Standard for hardware. Governed by the AN standard series, administered by Aeronautical Standards Group.
Part number dissection
ANAN identifies a US Air Force-Navy Aeronautical Standard for hardware.
525The '525' designates a washer head machine screw, typically made from alloy steel with a minimum tensile strength of 125,000 PSI.
10R28The '10R28' specifies the screw's thread size and length. '10' indicates a #10-32 UNF thread, and 'R28' denotes a length of approximately 1-3/4 inches (or 1-25/32 inches) and a grip length of approximately 1-11/32 inches (or 1-5/16 inches).
Specifications
Standard seriesAN
Specification ownerAeronautical Standards Group · CAGE 88044
Base codeThe '525' designates a washer head machine screw, typically made from alloy steel with a minimum tensile strength of 125,000 PSI.
Finish / variantThe '10R28' specifies the screw's thread size and length. '10' indicates a #10-32 UNF thread, and 'R28' denotes a length of approximately 1-3/4 inches (or 1-25/32 inches) and a grip length of approximately 1-11/32 inches (or 1-5/16 inches).
Acceptable alternates
AN525C10R20corrosion-resistant steel
Confirm acceptability against your drawing before ordering.
Availability
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Lead timeQuoted on request
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