MS27980 at a glance

Specification

Item	Value
Type	Snap fastener
Material	Bright brass, Government black or nickel plate, by finish suffix
Status	Check the current issue before design use.

Part numbers commonly stocked. The standard governs and may list others.

Size not listed3 part numbers

Part no.	Component	A dim., in	Length, in
MS27980-1	Button	—	—
MS27980-6	Socket	—	—
MS27980-7	Stud	—	—

Size 13 part numbers

Part no.	Component	A dim., in	Length, in
MS27980-8	Eyelet	9/32	—
MS27980-12	Stud, machine screw base	5/16	—
MS27980-26	Stud-eyelet combo	—	11/32

Size 23 part numbers

Part no.	Component	A dim., in	Length, in
MS27980-9	Eyelet	11/32	—
MS27980-13	Stud, machine screw base	3/8	—
MS27980-27	Stud-eyelet combo	—	25/64

Size 32 part numbers

Part no.	Component	A dim., in	Length, in
MS27980-10	Eyelet	13/32	—
MS27980-14	Stud, machine screw base	5/8	—

Part	Meaning
Format	MS27980-<dash>
B	Finish: Government black finish
N	Finish: Nickel plate finish
(none)	Finish: Brass finish (leave the suffix blank)
Example	MS27980-8B — Eyelet size 1, Government black finish

Finish suffix at the end of the part number: B for Government black, N for nickel plate, none for brass.
Eyelet sizes 2 and 3 are not available in brass.
Dimensions marked on the listing drawings (for example 9/16 and 11/64 on the stud) are not tabulated here.

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Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.