Standard · MS (Military Standards, CAGE 96906)Updated 2026-10-01
MS20426AD4-3.5A
The base code '20426AD4-3.5' specifies a solid, 100° countersunk precision head rivet ('20426') made from 2117-T4 Aluminum Alloy ('AD'). The '4' indicates a shank diameter of 4/32 inch (1/8 inch), and '-3.5' indicates a fastener length of 3.5/16 inch (7/32 inch). The trailing 'A' in the part number is not explicitly defined in the provided sources as a standard finish or variant code for this specific part number format. While some related part numbers show a trailing 'A' (e.g., MS20426AD4-30A), its meaning for 'MS20426AD4-3.5A' is not stated. MS stands for Military Standard, identifying the part as a military aerospace hardware standard. Governed by the MS standard series, administered by Military Standards.
Part number dissection
MSMS stands for Military Standard, identifying the part as a military aerospace hardware standard.
20426AD4-3.5The base code '20426AD4-3.5' specifies a solid, 100° countersunk precision head rivet ('20426') made from 2117-T4 Aluminum Alloy ('AD'). The '4' indicates a shank diameter of 4/32 inch (1/8 inch), and '-3.5' indicates a fastener length of 3.5/16 inch (7/32 inch).
AThe trailing 'A' in the part number is not explicitly defined in the provided sources as a standard finish or variant code for this specific part number format. While some related part numbers show a trailing 'A' (e.g., MS20426AD4-30A), its meaning for 'MS20426AD4-3.5A' is not stated.
Specifications
Standard seriesMS
Specification ownerMilitary Standards · CAGE 96906
Base codeThe base code '20426AD4-3.5' specifies a solid, 100° countersunk precision head rivet ('20426') made from 2117-T4 Aluminum Alloy ('AD'). The '4' indicates a shank diameter of 4/32 inch (1/8 inch), and '-3.5' indicates a fastener length of 3.5/16 inch (7/32 inch).
Finish / variantThe trailing 'A' in the part number is not explicitly defined in the provided sources as a standard finish or variant code for this specific part number format. While some related part numbers show a trailing 'A' (e.g., MS20426AD4-30A), its meaning for 'MS20426AD4-3.5A' is not stated.
Acceptable alternates
MS20426A4-3.5Adifferent material (1100-F Aluminum)
MS20426B4-3.5Adifferent material (5056-H32 Aluminum Alloy)
MS20426D4-3.5Adifferent material (2017-T4 Aluminum Alloy)
MS20426DD4-3.5Adifferent material (2024-T4 Aluminum Alloy)
MS20426T4-3.5Adifferent material (Titanium Columbium Alloy)
MS20426AD4-3.5different finish (Chemical Surface Treatment, Gold/Yellow)
MS20426AD4-3.5Ddifferent finish (Anodize, Dichromate Seal)
MS20426AD4-3.5Sdifferent finish (Chemical Surface Treatment, Clear)
Confirm acceptability against your drawing before ordering.
Availability
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BTEK Components MFG LLC · Largo, FloridaPart data compiled and verified by BTEK's sourcing engine.