Home · FSC 3120 Bearings, Plain, Unmounted · NSN 3120-01-314-5580

NSN 3120-01-314-5580 — Bearing,Plain,Self-Aligning

NIIN 01-314-5580 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 3120-01-314-5580 is the national stock number for a bearing,plain,self-aligning in federal supply class 3120 (Bearings, Plain, Unmounted). It cross-references to 4 manufacturer part numbers from 4 CAGE codes, including Sikorsky Aircraft Corporation, Kamatics Corporation, Sargent Aerospace & Defense, LLC; the primary is ATSB8-66DD. The unit of issue is EA and the FLIS list price is $165.13.

The U.S. government has bought this item 1 time on record, 1 of them in the last 24 months, most recently on September 22, 2026 for $20,108 from New Hampshire Ball Bearings Inc. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part numbers from 4 CAGEs

open solicitations, all agencies

government buy in 24 months

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
SB5085-101	78286	Sikorsky Aircraft Corporation	1 · Design control	2 · Fully interchangeable
SB5085-101	50632	Kamatics Corporation	3 · Design control (vendor)	2 · Fully interchangeable
SB5085-101	97613	Sargent Aerospace & Defense, LLC	3 · Design control (vendor)	2 · Fully interchangeable
SB5085-101	15860	New Hampshire Ball Bearings Inc	3 · Design control (vendor)	2 · Fully interchangeable
ATSB8-66DD	15860	New Hampshire Ball Bearings Inc	5 · Secondary reference	1 · Not fully interchangeable
KMDB8-23	97613	Sargent Aerospace & Defense, LLC	5 · Secondary reference	1 · Not fully interchangeable
KSC230308H	50632	Kamatics Corporation	5 · Secondary reference	1 · Not fully interchangeable

Government demand

Nothing open right now. Last government buy Sep 22, 2026. Watch this NSN and we will email you when it is solicited.

What the government paid

Date	Vendor	Qty	Unit cost	Amount	Buyer	Reference
Sep 22, 2026	New Hampshire Ball Bearings Inc 15860			$20,108	Dla	SPE4A625D5267

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices. 1 buy on record in total.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on ATSB8-66DD.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $165.13
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Bore Diameter: INCHES MINIMUM 0.4995 AND INCHES MAXIMUM 0.5000
Outer Member Outside Diameter: INCHES NOMINAL 1.6880
Outer Member Width: INCHES MINIMUM 0.8280 AND INCHES MAXIMUM 0.8380
Inner Member Width: INCHES MINIMUM 1.1230 AND INCHES MAXIMUM 1.1250
Hardness Rating: OUTER RING ROCKWELL C MINIMUM 55.0
Hardness Rating: INNER MEMBER ROCKWELL C MINIMUM 24.0 AND ROCKWELL C MAXIMUM 32.0
Material: INNER MEMBER STEEL COMP 440C
Material: OUTER RING STEEL COMP 630
Material: RACE LINER PLASTIC POLYTETRAFLUOROETHYLENE
Material Document And Classification: OUTER RING ASSN STD SINGLE MATERIAL RESPONSE A-S 5643,17-4H
Material Document And Classification: INNER MEMBER ASSN STD SINGLE MATERIAL RESPONSE A-S 5630,COND 440

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.