MS17131-9

Rolling-element bearings including ball, roller, needle, and tapered roller bearings that support rotating shafts with minimal friction.

A needle roller bearing of the antifriction, unmounted type.

Reading the part number. MS17131-9 breaks down as MS17131 — the Military Standard sheet that fixes the part's design — plus the dash/suffix code 9, which selects the exact size, material, or finish variant from the tables on that standard. Two parts sharing the MS17131 base are the same design in different variants.

Price in context. Across the 54 items we currently stock in FSC 3110 (Bearings, Antifriction, Unmounted), published unit prices run from $10.52 to $3,504.60. At $26.28, this item sits well below the class median of $105.14 — commodity hardware usually bought in volume.

Who orders MS17131-9. Aircraft owners and MRO shops replacing standard hardware, machine shops and OEMs filling a bill of materials, and government contractors sourcing against NSN 3110-00-277-0337. You can order by part number or by stock number — it is the same item, the same published price, and the same quote form.

Applicable standards. ABEC/ISO 492 tolerance classes, AFBMA/ANSI standards.

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